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Nordic cooperation on circular innovation focusing on workwear Photo: Sven, pixabay
16.04.2024

Nordic cooperation on circular innovation focusing on workwear

The University of Borås, Aalborg University Business School and Circular Innovation Lab have just started the 'North-South Circular Value Chains Within Textiles' project - an explorative project that aims at bridging textile brands in the Nordics with a strong focus on sustainability with innovative producers in the South.

Focus areas are Circular Value Chains (CVCs), Circular and resource-efficient textiles economy, Workwear and technical clothing, Sectors such as construction, energy, electronics and IT, plastics, textiles, retail and metals.

Made possible by a grant from the Interreg ÖKS programme, the first step is to create a specific economic, legal and technological framework allowing Scandinavian workwear companies to enter into close collaboration on circular solutions in the overall textile value chain and to prepare, and adapt their global value chains to the upcoming EU regulations on circular economy.

The University of Borås, Aalborg University Business School and Circular Innovation Lab have just started the 'North-South Circular Value Chains Within Textiles' project - an explorative project that aims at bridging textile brands in the Nordics with a strong focus on sustainability with innovative producers in the South.

Focus areas are Circular Value Chains (CVCs), Circular and resource-efficient textiles economy, Workwear and technical clothing, Sectors such as construction, energy, electronics and IT, plastics, textiles, retail and metals.

Made possible by a grant from the Interreg ÖKS programme, the first step is to create a specific economic, legal and technological framework allowing Scandinavian workwear companies to enter into close collaboration on circular solutions in the overall textile value chain and to prepare, and adapt their global value chains to the upcoming EU regulations on circular economy.

Recently, the consortium partners convened for an initial meeting at The Swedish School of Textiles to discuss the project framework, which is a feasibility study intended to lead to a multi-year project involving workwear companies in the Öresund-Kattegat-Skagerrak (ÖKS) region, including their supply chains in Asia.

Kim Hjerrild, Strategic Partnerships Lead at the Danish think tank Circular Innovation Lab, Copenhagen, explained: "The goal is to assist workwear producers in Denmark, Sweden, and Norway in becoming more sustainable through circular product design, production, and service concepts. We are pleased to have The Swedish School of Textiles lead the project as they have a strong tradition of collaborating with textile companies."

Complex branch
The decision to focus specifically on workwear stems from it being a complex part of the textile industry, demanding strict standards, certifications, safety aspects, and specific functions depending on the application area, such as specific high-performance environments, healthcare, and hospitality. "To future-proof their operations, companies need to become more resource efficient and circular by producing durable and long lasting workwear that can be repaired and reused. Additionally, they must reduce their carbon footprint per product, as well as minimize problematic chemical usage, and increasingly use recycled materials" explained Kim Hjerrild.

Wants to provide companies with tools and knowledge
Apoorva Arya, founder and CEO of Circular Innovation Lab, elaborates: "Our first and primary goal is to equip Scandinavian workwear companies with tools and knowledge in order to comply with the upcoming EU directives and policies. This includes regulations on product-specific design requirements to labour conditions for employees, human rights, all the way from production to third-party suppliers. Ensuring these companies, especially their suppliers, can transition to a circular supply chain, and navigate the legislative landscape, while guaranteeing competitiveness in the global market."

Focus on new structures
Rudrajeet Pal, Professor of Textile Management at The Swedish School of Textiles, is pleased that the university can be the coordinator of the project. "From the perspective of my research group, this
is incredibly interesting given the focus on the examination and development of ‘new’ supply chain and business model structures that would enable sustainable value generation in textile enterprises, industry, and for the environment and society at large. We have conducted several projects where such global north-south value chain focus is eminent, and this time particularly in workwear companies’ value chain between Scandinavia and Asia. We are delighted to contribute expertise and our experience of working internationally."

About the pre-project North-South Circular Value Chains Within Textiles, NSCirTex
The project aims to support the circular transition in the Nordics by setting up a shared governance model to enable pre-competitive collaboration and the design of circular value chains between Scandinavian workwear companies in the ÖKS-region and producers in India, Bangladesh, Vietnam, and Türkiye.

The next step is to achieve a multi-year main project where workwear companies with their suppliers in Asian countries, can test tailored models for shared governance as a way to develop practical circular solutions, such as post-consumer recycling, circular material procurement, develop safe and resource efficient circular products, enhance social sustainability and due diligence, among others. The main project will thus develop solutions to reduce material footprint, and resource usage while generating both commercial viability and prepare for new regulation, reporting, and accountability.

Partners in this feasibility study: University of Borås, Aalborg University Business School, and Circular Innovation Lab. The feasibility study is funded by the EU through the Interreg Öresund-Kattegat-Skagerrak European Regional Development Fund.

Source:

University of Borås, Solveig Klug

Photo: Claude Huniade
11.07.2023

Ionofibres a new track for smart and functional textiles

Electronically conductive fibres are already in use in smart textiles, but in a recently published research article, ionically conductive fibres have proven to be of increasing interest. The so-called ionofibres achieve higher flexibility and durability and match the type of conduction our body uses. In the future, they may be used for such items as textile batteries, textile displays, and textile muscles.

The research project is being carried out by doctoral student Claude Huniade at the University of Borås and is a track within a larger project, Weafing, the goal of which is to develop novel, unprecedented garments for haptic stimulation comprising flexible and wearable textile actuators and sensors, including control electronics, as a new type of textile-based large area electronics.

WEAFING stands for Wearable Electroactive Fabrics Integrated in Garments. It started 1 January 2019 and ended 30 June 2023.

Electronically conductive fibres are already in use in smart textiles, but in a recently published research article, ionically conductive fibres have proven to be of increasing interest. The so-called ionofibres achieve higher flexibility and durability and match the type of conduction our body uses. In the future, they may be used for such items as textile batteries, textile displays, and textile muscles.

The research project is being carried out by doctoral student Claude Huniade at the University of Borås and is a track within a larger project, Weafing, the goal of which is to develop novel, unprecedented garments for haptic stimulation comprising flexible and wearable textile actuators and sensors, including control electronics, as a new type of textile-based large area electronics.

WEAFING stands for Wearable Electroactive Fabrics Integrated in Garments. It started 1 January 2019 and ended 30 June 2023.

These wearables are based on a new kind of textile muscles which yarns are coated with electromechanically active polymers and contract when a low voltage is applied. Textile muscles offer a completely novel and very different quality of haptic sensation, accessing also receptors of our tactile sensory system that do not react on vibration, but on soft pressure or stroke.

Furthermore, being textile materials, they offer a new way of designing and fabricating wearable haptics and can be seamlessly integrated into fabrics and garments. For these novel form of textile muscles, a huge range of possible applications in haptics is foreseen: for ergonomics, movement coaching in sports, or wellness, for enhancement of virtual or augmented reality applications in gaming or for training purposes, for inclusion of visually handicapped people by providing them information about their environment, for stress reduction or social communication, adaptive furniture, automotive industry and many more.

In Claude Huniade’s project, the goal is to produce conductive yarns without conductive metals.

"My research is about producing electrically conductive textile fibres, and ultimately yarns, by coating non-metals sustainably on commercial yarns. The biggest challenge is in the balance between keeping the textile properties and adding the conductive feature," said Claude Huniade.

Currenty, the uniqueness of his research leans towards the strategies employed when coating. These strategies expand to the processes and the materials used.

Uses ionic liquid
One of the tracks he investigates is about a new kind of material as textile coating, ionic liquids in combination with commercial textile fibres. Just like salt water, they conduct electricity but without water. Ionic liquid is a more stable electrolyte than salt water as nothing evaporates.

"The processable aspect is an important requirement since textile manufacturing can be harsh on textile fibres, especially when upscaling their use. The fibres can also be manufactured into woven or knitted without damaging them mechanically while retaining their conductivity. Surprisingly, they were even smoother to process into fabrics than the commercial yarns they are made from," explained Claude Huniade.

Ionofibres could be used as sensors since ionic liquids are sensitive to their environment. For example, humidity change can be sensed by the ionofibers, but also any stretch or pressure they are subjected to.

"Ionofibres could truly shine when they are combined with other materials or devices that require electrolytes. Ionofibres enable certain phenomena currently limited to happen in liquids to be feasible in air in a lightweight fashion. The applications are multiple and unique, for example for textile batteries, textile displays or textile muscles," said Claude Huniade.

Needs further research
Yet more research is needed to combine the ionofibres with other functional fibres and to produce the unique textile devices.

How do they stand out compared to common electronically conductive fibres?

"In comparison to electronically conductive fibres, ionofibers are different in how they conduct electricity. They are less conductive, but they bring other properties that electronically conductive fibers often lack. Ionofibres achieve higher flexibility and durability and match the type of conduction that our body uses. They actually match better than electronically conductive fibres with how electricity is present in nature," he concluded.

Source:

University of Borås

Functional textiles – an alternative to antibiotics University of Borås
04.07.2023

Functional textiles – an alternative to antibiotics

Tuser Biswas conducts research that aims to develop modern medical textiles that are good for both the environment and human health. Textiles with antimicrobial properties could reduce the use of antibiotics.

Tuser Biswas conducts research that aims to develop modern medical textiles that are good for both the environment and human health. Textiles with antimicrobial properties could reduce the use of antibiotics.

His work involves research and teaching activities within the area of textile material technology. The current research involves resource-efficient inkjet printing of functional materials on various textile surfaces for advanced applications.
 
The conventional textile industry devours natural resources in the form of water, energy, and chemicals. A more resource-efficient way to produce textiles is with ink jet printing. Tuser Biswas, who recently defended his doctoral thesis in Textile Material Technology, seeks to develop methods for functional textiles. He has shown that it is possible to print enzymes on textiles. These are proteins that function as catalysts in the body, as they set chemical processes in motion without themselves changing. They could, for example, be used in medical textiles with antimicrobial properties or to measure biological or chemical reactions.

“Ever since the industrial revolution, our society has used an abundance of synthetic and harsh chemicals. Our research works to replace these chemicals with environmentally friendly and bio-based materials,” said Tuser Biswas.
 
Promising results with enzymes on textiles
Developing a good enzyme ink was not entirely easy and it took a number of attempts before he finally, to his great joy, had successful results. Tuser Biswas explained that the most important result is to show how a printed enzyme could bind another enzyme to the surface of a fabric. Although the activity of the enzymes decreased by 20-30 percent after printing, the results are still promising for future applications. At the same time, the work has provided new knowledge about many fundamental questions about printing biomaterials on fabric.

“Before starting the project, we found several related studies that focused on producing a finished product. But we wanted to study the fundamental challenges of this subject, and now we know how to make it work,” said Tuser Biswas.

He is now seeking funding to continue researching the subject and has so far received a grant from the Sjuhärad Savings Bank Foundation. During the Days of Knowledge event in April 2023, he presented his research to representatives from the City of Borås and business, the Sjuhärad Savings Bank Foundation, and the University of Borås.
     
Medical textiles instead of antibiotics
Tuser Biswas hopes that continued research in textile technology can provide alternatives to using antibiotics. With increasing antibiotic resistance, it is an important issue not only locally but worldwide.

“Instead of treating the patient with a course of antibiotics, one can act preventively and more effectively by damaging the bacteria on the surface where they start to grow. In a wound dressing, for example. Nanoparticle-based antimicrobials can reduce growth effectively. It is possible as nanoparticles can interact better with the bacterial membrane and reach the target more easily than conventional antimicrobials.”

Source:

Lina Färm. Translation by Eva Medin. University of Borås