New papers accepted in international journals

Two new papers have been accepted by international journals relating to the WOOLUME project, one on the biodegradation of wool fibers and one on the acoustic properties.

The very latest is on the acoustic properties of tufted carpets coupled with the underlayment made from tannery wool waste: Acoustic Performance of Tufted Carpets Coupled with Underlayment Produced from Tannery Wool Waste in the journal Materials. The authors are Jan Broda, Katarzyna Kobiela-Mendrek, Marcin Baczek and Monika Rom.

To better use local sources of wool, the coarse wool of mountain sheep was used to form a carpet pile layer, while the waste wool from the tannery industry was applied to form carpet underlayment. During investigations, the acoustic performance of the carpets was assessed. The carpets’ sound absorption coefficients and transmission loss were studied, and it was revealed that the adding of underlayment improves the carpet’s sound absorption only at medium sound wave frequencies.

It was concluded that wool nonwovens can be used as an effective, eco-friendly, sound-absorbing carpet underlayment, which can improve wool utilisation and contribute to the reduction in environmental pollution caused by plastic residues.

Excessive noise has become a severe and pervasive pollutant that harmfully influences physical and mental health. Exposure to domestic noise negatively affects human well-being, impairs productivity, generates higher stress, and contributes to somatic complaints. Given the adverse effects of noise, the urgent need to reduce noise levels in homes, classrooms, open-plan offices, workplaces, and public facilities is highly significant and desirable today. For many years, various textiles used as window curtains, tapestries, upholstery, wall and ceiling panels, screens, rugs, and carpets have been used to reduce noise and improve the acoustic comfort of interiors. Among these products, carpets are the most versatile, controlling indoor noise in various ways. First, carpets lower the level of noise by absorbing airborne sound. Second, they reduce the generation of floor impact sounds produced by footfalls, furniture movement, and objects dropped onto the floor. Third, carpets minimise the noise transmission through floors to adjoining rooms in multi-storied buildings.

Pile carpets, in particular, demonstrate a significant potential for noise reduction. These carpets are made of two layers that perform different functions and have different structures.

Local Polish mountain sheep (photo: Jan Broda).

The sound absorption in the pile layer depends on the pile type (loop or cut) and its height and density. Due to the open fuzzy structure, carpets with cut piles have higher sound absorption capacity than carpets with loop piles. Increasing pile height and density increases the interphase contact surface between piles and vibrating air molecules. Then, the energy dissipated by friction is higher and the resulting sound absorption increases. The influence of other parameters characterising the pile layer, such as fibre type, yarn parameters, or knot type in knotted-pile carpets, is less distinguishable and difficult to estimate.

To access the article, click on this link.

The second of the two papers is on wool biodegradation: The Morphology of Wool Fibers Biodegraded in Natural Conditions in Soil authored by Monika Rom, Jan Broda, Tomasz Kukulski, Andrzej Gawlowski & Katarzyna Kobiela-Mendrek in the Journal of Natural Fibers.

The morphology of sheep wool applied as organic fertilizer biodegraded in the soil was examined. The investigations were conducted in natural conditions for unwashed waste wool, which was rejected during sorting and then chopped into short segments and wool pellets. Different types of wool were mixed with soil and buried in experimental plots. The wool samples were periodically taken and analyzed for one year using Scanning Electron Microscopy (SEM) and Energy-dispersive X-ray Spectroscopy (EDS). During examinations, the changes in the fibers’ morphology were observed. It was stated that cut wool and pellet are mechanically damaged, which significantly accelerates wool biodegradation and quickly destroys the whole fiber structure. On the contrary, for undamaged fibers biodegradation occurs slowly, layer by layer, in a predictable sequence. This finding has practical implications for the use of wool as an organic fertilizer, suggesting that the method of preparation can influence its biodegradation rate.

The ability of wool to support plant development in agricultural and horticultural crops has been repeatedly demonstrated. The application of wool fertilizer has led to higher yield for various vegetables and cereals. These studies have used wool of different origins and waste generated in various stages of wool processing. For instance, unprocessed and unwashed wool obtained by sheep shearing, wool sheared from animals intended for slaughter, the waste derived from scouring and carbonization, and wool recycled from shredded carpets have all been tested. In some cases, loose wool fibers were mixed with soil using agricultural machines or spread on the ground’s surface and covered with a layer of topsoil. To avoid compounding issues, the wool was cut into short segments in certain studies. In other cases, the wool was added as easily applicable pellets.

The article is available at this link.

Acoustic Performance of Tufted Carpets Coupled with Underlayment Produced from Tannery Wool Waste

Authors: Jan Broda, Katarzyna Kobiela-Mendrek, Marcin Baczek and Monika Rom

Abstract

Sheep wool is a precious, renewable raw material that is nowadays disregarded and wasted. To better use local sources of wool, it was used to manufacture tufted carpets. The coarse wool of mountain sheep was used to form a carpet pile layer, while the waste wool from the tannery industry was applied to form carpet underlayment. During investigations, the acoustic performance of the carpets was assessed. The carpets’ sound absorption coefficients and transmission loss were determined using the impedance tube. It was revealed that the adding of underlayment improves the carpet’s sound absorption only
at medium sound wave frequencies. The underlayment significantly increases transmission loss in the whole frequency range. The acoustic performance of the carpets with the wool underlayment is similar to the acoustic characteristics of the carpets with an underlayment made from polyester. It was concluded that wool nonwovens can be used as an effective, eco-friendly, sound-absorbing carpet underlayment, which can improve wool utilisation and contribute to the reduction in environmental pollution caused by plastic residues

Click here for full text (ebscohost.com)

New article published in the WOOLUME project

Big congrats in order! WOOLUME recently got some more good news: ‘We are pleased to inform you that “Thermoregulation and Soil Moisture Management in Strawberry Cultivation Mulched with Sheep Wool” by Jan Broda, Andrzej Gawlowski, Monika Rom, Tomasz Kukulski, Katarzyna Kobiela-Mendrek has been published in Applied Sciences and is available online’:

Due to its beneficial and unique insulating properties, wool mulch ensures a proper microclimate on the soil surface, preventing the overheating of the soil during the summer heat and protecting excessive cooling during cold nights. The wool spread on the soil surface minimises the fluctuations between the soil’s day and night temperature.

The fluctuations do not exceed 2–3 degrees on hot summer days, which are five times smaller than for the control plot. Due to its excellent absorption capacity, wool mulch ensures high rainwater retention, providing a humid environment during drought. The performance of the wool mulch in the soil thermoregulation and water retention is better than that of other organic mulching materials of plant origin. For wool, the temperature fluctuations recorded in summer are two times smaller.

The water retained in wool is released into the soil more slowly, ensuring a longer-term higher water content in strawberries’ root zones. In addition to being beneficial for plant growth, wool is difficult to biodegrade and maintain its properties for a long time.

The application of wool as mulch in strawberry cultivation was analysed to find a solution for the rational use of wool from mountain sheep. In the plantation, the experimental plots mulched with wool, straw, and bark were appointed. The plots were monitored during the experiment, while the soil temperature and moisture content were measured.

The data collected in two-hour intervals were analysed, taking into account air temperature and falls registered in the local meteorological station. Additionally, the progress of mulch biodegradation was tracked. The changes in the wool morphology that occurred by biodegradation were observed during microscopic examinations using the Scanning Electron Microscope (SEM). It was stated that wool mulch plays an essential role in thermoregulation of the soil surface, prevents the overheating of the soil during the summer heat, and protects soil against excessive cooling during cold nights.

The wool mulch minimizes the fluctuations between the soil’s day and night temperature. The fluctuations do not exceed 2–3 degrees on hot summer days, which are five times smaller than for the control plot. The wool retains large amounts of rainwater several times its weight. The water is then slowly released, providing the growing plants with a moist environment during a longer rainless period.

Moreover, wool is difficult to biodegrade and maintains its properties for a long time, lasting longer than one vegetation season. Compared to straw and bark, the temperature fluctuations recorded for wool are two times smaller, and its effectiveness in water management is considerably better. The beneficial impact of the wool mulch ensuring favourable conditions for strawberry growth was explained by the specific wool structure and its unique properties.

Read and learn!

The way forward for WOOLUME

As the Woolume project comes to an end after three and a half fruitful years, a new project note has been published.

Economics and scale are important themes, especially for moving forward with better use of local wool. As identified in other projects, things need to happen in the right order and there must be an economic fundament that ensures a professionalism and not that what one does is done on a hobby basis. The skills gap is an important issue if there is to be a future for the wool industry in Europe, and this must be addressed at national and EU level, this is not something a project or industry can fix on their own.

WOOLUME has been a bilateral project with only two countries involved, and few project-partner institutions. Usually projects involve more countries, many more institutions and therefore also are ’messier’ in the way that one needs to involve all actors in several research questions and WPs. On the other hand, the research in more complexly structured projects is often more limited and must stick to one problem-definition in order to make the project doable.

If we are going to be scaling textile industry in Europe, based on our local resources and better use of them, many things must happen at the same time. One is that those who grant money for research must be aligned with the planetary boundaries and with making a positive impact for planet, people and animals. The zealots also must have room to ‘play’ outside the strict confinements of complex EU funding, which most probably must be backed by national governments, who see the value of being self-sufficient not only when it comes to food, but also for textiles.

Summary

This note looks at knowledge transference between a country of high wool utilisation (Norway) and a country of low wool utilisation (Poland). The findings that are presented here, are collected through semi-structured interviews, via Zoom, in person and also with one written response. All interviewees were project partners. Economics and scale are important themes, especially for moving forward with better use of local wool. As identified in other projects, things need to happen in the right order and there must be an economic fundament that ensures a professionalism and not that what one does is done on a hobby basis. The skills gap is an important issue if there is to be a future for the wool industry in Europe, and this must be addressed at national and EU level, this is not something a project or industry can fix on their own.

Click here to read full report.

Woolume coming to its voluminous end

“Will I have to change my sheep?” was the first question Piotr Kohut had asked when the Center for Regional Produce in Koniaków was asked to be a partner in the Woolum bilateral project financed by Norway grants. The respect for keeping the sheep happy prevailed, and the project has amazing results, including a high-hanging award that recognized this as a ‘project for the future’.

The change from the first time the Woolume-team visited Koniaków, was marked. The products were more varied and more professionally displayed, and the optimism for the future virtually popped out of the walls. “We now know that what we have here for sale, also the wool, is 100% from our sheep. It has been a struggle, but now we are confident that we can deliver on this,” said Maria Kohut, who has been a powerhouse in the project.

The Center for Regional Produce in Koniaków, where we ended the conference.

It was the Beskid mountains that was the setting for the end-seminar, and through the network of Norway-grant projects (including the Portuguese hiWool project and the Polish craft school from Zamek Cieszyn), the plus-factor of meeting across disciplines and projects was exponential. As an end-exercise for the seminar, the Norwegian partners arranged a workshop on knowledge-transfer and ways forward, which garnered enthusiasm and ideas for further projects and cooperation, also with countries that so far have not – in a wool context – been blessed with Norway grant funding. Slovakia being one and long-overdue.  

There were more ‘hands-on’ workshops as well, related to the local lace-tradition that met us in every window in the small town, and even painted in large scale on house-walls. Maria Kohut’s take was to transfer this traditionally very delicate technique to wool and thus other applications.

The local lace traditions are very strong, and manifest themselves in local women producing lace, a local artist, Beata Legierska, who finds new and innovative ways of using lace in art and jewelry, and more.

When it came to applications, though, the whole work around fertilizing the soil with wool, using wool that has no use in other areas as mats and pellets for gardens, pots, city roofs, deserted open sores in the landscape from mining – the list seemed endless and so promising that any urban planner or someone trying to restore landscapes should be inspired. A visit to a local upstart company reinforced the impression: This area for development will be a major force in the future use of problematic wool that is currently burned, including shavings from skin and leather tanning.

Using wool for its best purposes rather than manipulating the market, the breeds or other things that compromise the well-being of the sheep was a recurring theme, and a major learning point from both earlier Norwegian wool projects and Woolume. The detailed testing from the Estonian-Norwegian bilateral project underpinned this (also under Norway grants), and there is now a comprehensive database to back this on all in all six sheep breeds. Much of the research in Woolume has also centered around the ‘best use’, so these two projects have major cross-pollination.

Wool pellets and wool that was used in experiments as fertilizer.

Revisiting the whole backdrop for the Woolume project, but also the local very dense and complicated history which in the past had delivered a rich cultural and economically viable industry that had made marks internationally, brings forward a lot of things to discuss in the light of EU’s textile strategy. The tapestry of history, economy and cultural elements that have shaped this for better or worse, is further described in Local, Slow and Sustainable Fashion: Wool as a Fabric for Change.

The proud Woolume team, from left Ingun Grimstad Klepp, Lisbeth Løvbak Berg, Katarzyna Kobiela-Mendrek, Monika Rom, Damian Chmura, Andrzej Gawlowski, Anna Salachna, Jan Broda, Ingvild Espelien and Maja Espelien. In front, from left Tone Skårdal Tobiasson and Maria Kohut.

With pride, Jan Broda who has led the project successfully for three years, told the conference that Woolume has been awarded a major Laureate prize, more specifically the Polish Smart Development Award in the category “Project of the Future”, from the Polish Intelligent Development Forum Foundation, Center for Intelligent Development. This is the reason cited for the prize: “for the achievements of the project, which may result in a positive impact on social and economic development. The award is granted for an open approach to promotion and communication with society, in order to present the importance of the benefits resulting from the implemented solution, and an attitude focused on actively maintaining a positive and interesting image of Polish science and research and development works.” Bravo!

Productive project publishes again

The scientific article Sound Absorption of Tufted Carpets Produced from Coarse Wool of Mountain Sheep has been published in Journal of Natural Fibers. The article is co-authored by Jan Broda, Katarzyna Kobiela-Mendrek, Marcin Bączek, Monika Rom and Ingvild Espelien, and is an important contribution to the study of wool’s properties.

As part of the ongoing research in the WOOLUME project, looking at good utilization of coarse Polish mountain wool, is an important exploration. Tufting is a technique with cut and loop piles and to which degree this technique used on coarse wool can contribute to sound absorbing properties is interesting to study.

Some tufting history

Wool from Polish mountain sheep is coarse, highly differentiated both in thickness and length and contains a significant content of medullated fibers and kemp. Despite its poor characteristics, the wool can be used for the production of rag yarns fit for pile carpets with tufting technique. The carpets possess acceptable sound absorbing capacity comparable to other similar products obtained from other wool types, which is dependent on both pile types and their parameters.

The hand tufting technique was invented at the end of the nineteenth century in Dalton (Georgia, USA) where it was first applied for handicraft production of bedspreads, mats, and bathrobes. The technique involves stitching the yarn into the backing fabric to create a loop, cut, or mixed piles. Loop piles are formed when the yarn inserted is caught by loopers and pulled through the backing to a set length. Cut piles are formed by cutting the piles at their maximum length, with blades operating in tandem with the loopers. In the 1930s, a modified single-needle commercial sewing machine was adopted for tufting. The machine enabled tufting of thick yarn into muslin without tearing the fabric and was coupled with a knife to cut the loops.

Further development

In the next few years, tufting machines with four, then eight, twenty-four, or more needles enabling the formation of parallel rows were constructed. Machines were introduced to the industrial practice, which soon resulted in the rapid growth of the mechanized tufting industry. After the second world war, in the 1950s, tufting machines were getting more and more common and were equipped with several hundred needles to stitch hundreds of pile yarn rows. In the next years, tufting dominated carpet manufacturing. It is estimated that nowadays, tufting is a common technique widely used for the production of 90% of the carpets available in the market. The introduction of the tufting technique on a large scale coincided with the development of new synthetic fibers. Application of these fibers significantly accelerated the growth of carpet production. The new yarns, continuous filament nylon yarns in particular, provided good quality and high durability of carpets at a relatively low price, out-performing wool as the raw-material with a much cheaper price point.

Wool carpets used as floor coverings and interior decorations offer additional considerable advantages in terms of thermal insulation and heat balance in buildings. Moreover, such carpets are highly effective in controlling indoor noise and reducing the reverberation of sound. Carpets are some of the most versatile sound-absorbing materials which absorb both airwave sounds and reduce surface noise generation. Additionally, carpets reduce the impact of sound transmission between stories in multi-storied buildings.

Detailed characterization

In our previous studies, the acoustic performance of felt and fabrics manufactured from Polish mountain sheep wool was analyzed. The investigations showed that the wool of mountain sheep, which is often disregarded and treated as a waste product of sheep husbandry, is a valuable raw material that can be used to produce carpets and panels with good sound-absorbing properties. The paper presents the results of further studies on the utilization of coarse wool obtained from mountain sheep to produce rag yarns suitable for the production of pile carpets with the tufting technique. During this investigation, the raw wool and yarns were characterized in detail, and the possibility of using yarns in the tufting technique was explored. Then, the sound absorption capacity and transmission loss of the obtained materials in relation to the type of piles, pile height, and density were analyzed.

Conclusion: Apart from their decorative function, carpets produced from Polish mountain sheep wool with the tufting technique can serve as valuable sound absorbing material to lessen noise, reduce reverberation, and improve the acoustic comfort of the room.

Access to the full article is provided in this link.

This research was funded by the Norway Grant titled “Polish sheep wool for improved resource utilisation and value creation.” NOR/POLNOR/WOOLUME/0007/2019

Winter wheat + wool pellets work well

It turns out that Polish mountain sheep wool can be successfully used as a nitrogen-rich, organic fertilizer in organic farming. This enables utilization of coarse wool, which is not suitable for textile processing, to be used and lead to zero-waste from wool shearing.

“Utilisation of waste wool from mountain sheep as fertiliser in winter wheat cultivation” is the title of an study from the University of Bielsko-Biala published in the Journal of Natural Fibers, Volume 20 Issue 2. Authors are all part of the WOOLUME project, Jan Broda, Monika Rom, Andrzej Gawlowski and Katarzyna Kobiela-Mendrek.

Coarse wool obtained from mountain sheep has low economic value and is treated as a troublesome by-product of sheep farming. To find ways to utilize it, wool deemed as waste was separated from the better-quality wool during sheep shearing, and used in experiments as a fertilizer in winter wheat cultivation.

During the preliminary tests, it was found that un-scoured wool did not contain excessive amounts of heavy metals or environmentally problematic contaminations, and could therefor safely be used as fertilizer. After this was established, the raw wool was cut into shorter segments and mixed with the soil, and how this influenced winter wheat growth was examined during two seasons.

Simultaneously, the progress of wool biodegradation and the nitrogen content in the soil were analyzed. It was found that, during the growth period, nitrogen compounds are slowly released into the ground, and the content of nitrogen in the soil was closely correlated with the progress of wool biodegradation.

Stems of the winter wheat Kilimandzaro variety grown in plots with different wool content at the end of growing season. With increased wool content, the stems are visibly longer.

Released nitrogen thus positively impacts wheat growth in various stages, which is manifested by higher tillering degree, more intense leaf color, higher stems and finally, greater yield. Wool added into the soil reveals its positive influence on wheat development up to two harvests. Mountain sheep wool can be successfully used as a nitrogen-rich, organic fertilizer in organic farming. This enables utilization of coarse wool, which is not suitable for textile processing, according to the zero-waste strategy.

Field of winter wheat Sacramento variety at the stage of stem elongation with marked plots established in: 1/first year; 2/second year.

Read the full article in Journal of Natural Fibers here (tandfonline.com).

Double whammy for Clothing Research

Two articles from Clothing Research at Consumption Research Norway have been accepted by the journal Fibers and are accessible online. The two articles are entitled Reducing plastic: Opportunities and obstacles for coarser wool in consumer goods and Natural and sustainable? Consumers’ textile fiber preferences.

More than half of the team in the Clothing Research group have contributed to these two chapters: Kirsi Laitala, Anna Schytte Sigaard (author on both articles), Lisbeth Løvbak Berg and Ingun Grimstad Klepp – the article on reducing plastics is co-authored with three from the University of Bielsko-Biala. In the first article, findings are presented that show that on a product level, the many inherent properties of wool create opportunities for product development and sustainability improvements, and that using coarser wool represents an opportunity for replacing plastics in many applications. This was done using a SWOT (Strengths-Weaknesses-Opportunities-Threats) analysis of results from a desktop study and interviews with producers of products made from wool, as well as policy documents relating to wool, waste, textiles, and plastic.

The second article looks at synthetic vs. natural fibers, consumer preferences, their view on sustainability and more importantly, consumers’ willingness to degrow their consumption. Interestingly, not only do Norwegian consumers prefer wool, they also believe that wool is the most sustainable choice of fiber, with polyester being the least. This is the exact opposite of what today’s most common measuring tool, the Higg Material Sustainability Index, tells us.

A snap-shot from the Higg MSI ranking of fibers, the higher the number, the less sustainable.

This article also offers proof that perceptions of high sustainability regarding fibers are negatively correlated with reduced consumption: “Our study suggests that a continued focus on material substitution and other technological measures for reducing climate change will impede the move toward sustainability in the textile sector.” The article raises the very pertinent question of how the perspectives of techno- and eco-centrism impact Norwegian consumers’ fiber preferences and perceptions, and how does this, in turn, affect their clothing consumption?

Technocentric or eco-centric?

On the one hand, green growth aims to de-couple growth in the textile industry from a reliance on virgin materials by keeping already-produced materials in circulation for as long as possible. In contrast to this technocentric perspective, the eco-centric degrowth narrative holds at its core ideas such as scarcity, reduced consumption, and lifestyle sacrifices at a time of shrinking resources for the Global North. “The eco-centric approach does not disregard technology but holds that we cannot rely solely on new and better technology. Instead, it focuses primarily on behavior change and argues that a paradigm shift is necessary to transform conventional fashion production and consumption.”

The respondents showed a high preference for natural fibers, especially wool, which was preferred by 72% of them, followed by cotton (63%), alpaca (38%), organic cotton (34%), linen (30%), silk (23%), bamboo viscose (22%), viscose (10%), and, finally, synthetics at the bottom of the scale, with polyester being preferred by only two percent, followed by recycled polyester (2%) and acrylic (1%). All the natural fibers were more popular than the manmade ones, and out of the manmade fibers, the synthetics were least popular, even recycled polyester. Almost half of the respondents said that they avoided polyester (47%) and acrylic (46%), and 35% avoided even recycled polyester.

Rebound effect?

Fiber preference was positively correlated with reduced clothing consumption, so that those who preferred more natural fibers had reduced their clothing consumption more than those who preferred synthetic fibers, which is interesting. This fits with the eco-centric perspective of degrowth and reduced consumption. However, it seems that believing that a fiber is sustainable, negatively affects consumption reduction. An explanation for this could be that if the fibers used to produce clothing are considered sustainable, reducing consumption is not necessary, which gives a rebound effect that could be seen as counter-productive, from an eco-centric perspective.

Therefore, consumers’ willingness to reduce consumption is important and may be weakened if the focus continues to be on fibers and materials, instead of reduced production and consumption. Read the article here (mdpi.com).

The wool-related article, does, to a certain degree, focus on the raw materials, and replacing one raw material (synthetic) with a natural fiber. To investigate the use of coarse wool, mainly from Polish sheep, product groups that do not require the softness of Merino wool were examined. Many of these products are currently made of plastic, mostly in the form of synthetic fibers. In addition, many of them are single-use, such as sanitary products and plant pots, but also sound-absorbing acoustic panels. The study found that making this switch, is dependent on local infrastructure and working small-scale enterprises. A shift to small-scale and local resource utilization requires systemic change on several levels: Here the findings show that policy can incentivize material usage transitions, but that these tools are little employed currently.

Burial urns in felted wool from a Danish company.

As synthetic textiles are an important, but often forgotten part of the increasing plastic waste problem, this article contributes to lift up innovative ideas to reduce our reliance on fossil-based materials. These textiles contain environmental toxins added during the processing of fiber and fabric, and through microfiber shedding synthetic textiles contribute up to 35% of the released microplastics which have been shown to end up in our lungs, oceans, animals, and even placentas.

SWOT analysis

A common factor is a focus on wool utilization as a waste management process and in non-textile products, rather than using the material in high-value textile products. The different aspects related to the coarse wool, were first placed in the SWOT table, then grouped into themes: Properties and product performance, Price and availability, Sustainability, and Regulations and policy. As common in SWOT analysis, one aspect can be both a positive and a negative aspect, e.g., coarser wool being more labor-intensive to use means that it creates more jobs, but at the same time it makes it more costly, as will be examined in the following.

The findings were divided into internal factors, which define the strengths and weaknesses of the internal environment, in this case, the material itself and its value chain directly, and external factors, defining opportunities and threats, that are determined by the external environment operated in, i.e., the overall market and competition. Efforts to utilize and valorize surplus, coarser wool, range from creating wool powders and keratin, fertilizers, substrates for biogas production, regenerating fibers from waste keratin, slug-repelling wool pellets, insulation, water purification to bio-composites.

The lack of focus on surplus wool

As a by-product, the wool to some extent becomes invisible in that the wool is mainly disposed of on the farms directly and therefore does not enter into any formal waste management system. When the EU Strategy for Sustainable and Circular Textiles does not even mention local wool – or the possibilities that wool and other local EU fibers hold – but discusses local solutions solely as future potential recycling plants, this can be challenged through the results shown in this article.  In order to replace more plastic with wool, different types of wool need to be used where they are best suited. This also raises the question of how much under-utilized or surplus wool is actually out there?

In addition, using the coarse wool represents an opportunity to replace particularly problematic plastic products. The study found that several of the examined products are today mainly made of plastic, including the products where plastic cannot be recycled and therefore represent a waste problem. It is unlikely that all such plastic can be replaced by wool, but it is nevertheless important to develop alternatives and at the same time exploit available natural materials: “It is important to remember that the extensive use of plastic is relatively new in human history and that a range of solutions existed before these products invaded the market.”

To read this article, click here (mdpi.com).

Reducing Plastic in Consumer Goods: Opportunities for Coarser Wool

Lisbeth Løvbak Berg, Ingun Grimstad Klepp, Anna Schytte Sigaard, Jan Broda, Monika Rom and Katarzyna Kobiela-Mendrek.

Abstract

Production and use of plastic products have drastically increased during the past decades and their environmental impacts are increasingly spotlighted. At the same time, coarse wool, a by-product of meat and dairy production, goes largely unexploited in the EU. This paper asks why more coarse wool is not used in consumer goods, such as acoustic and sound-absorbing products, garden products, and sanitary products. This is answered through a SWOT analysis of results from a desktop study and interviews with producers of these products made from wool, as well as policy documents relating to wool, waste, textiles, and plastic. Findings show that on a product level, the many inherent properties of wool create opportunities for product development and sustainability improvements and that using the coarser wool represents an opportunity for replacing plastics in many applications as well as for innovation. This is, however, dependent on local infrastructure and small-scale enterprises, but as such, it creates opportunities for local value chains, value creation, and safeguarding of local heritage. The shift to small-scale and local resource utilization requires systemic change on several levels: Here the findings show that policy can incentivize material usage transitions, but that these tools are little employed currently.

Click here to read the full paper (mdpi.com).

Natural and Sustainable? Consumers’ Textile Fiber Preferences

by Anna Schytte Sigaard  and Kirsi Laitala

Abstract

Textile fibers have become a major issue in the debate on sustainable fashion and clothing consumptionWhile consumers are encouraged to choose more sustainable and circular textile materials, studies have indicated that a reduction in production and consumption has the greatest potential to reduce the total environmental impact. This can be considered an ecocentric perspective with a focus on degrowth as opposed to a technocentric view where new technologies are expected to solve environmental problems while economic growth continues. Based on a survey in Norway (N = 1284), we investigate how the techno- and ecocentric perspectives impact Norwegian consumers’ fiber preferences and perceptions and the corresponding effects on their clothing consumption. We found that the majority of consumers preferred natural fibers compared to synthetic materials. This contradicts current market practices and the recommendations by material sustainability comparison tools such as the Higg Material Sustainability Index (MSI), where many synthetics receive better ratings than natural fibers. We also found that perceptions of high sustainability regarding fibers were negatively correlated with reduced consumption. Our study suggests that a continued focus on material substitution and other technological measures for reducing climate change will impede the move toward sustainability in the textile sector.

Click here to read the full article (mdpi.com).