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Advancing sustainability in textiles

March 1st, 2019 / By: / Advanced Textiles, Markets

Textiles are part of a larger drive to protect and preserve resources for the future.
The U.S. cotton sector has released a 10-year sustainability goal statement to reduce water and chemical usage, decrease greenhouse gas emissions and decrease energy use by 15 percent.

Sustainability may be understood as a way to judiciously consume resources while leaving or even enhancing the availability of resources for future generations. The term “sustainability” has developed a powerful vibe that affects our society in general and the business community, specifically.

Concerns about environmental contamination are a driving force behind sustainability initiatives, as contamination stresses the human population, as well as animal and plant biodiversity. It is significant that recognition of these dynamics has prompted governments to take sustainability seriously and to regulate the use of certain products.

In October 2018, for example, the European Parliament voted to ban certain single-
use plastics by 2021. According to the EU Parliament, the main reason behind the ban is marine pollution, which affects biodiversity. Similarly, certain states in India have banned the use of thin polyethylene single-use bags—but this is just one example in the international picture.

Articulating the issues

Sustainability means different things to different people: conserving resources, use of natural materials, use of alternate energy sources and use of green technologies are some examples. Sustainability for many rests on the 3 E’s: environment, economics and energy. In other words, one must be cognizant of environmental sustainability, economic viability and energy-process efficiency. If projects and products are planned with careful consideration of the 3 E’s, we may preserve the world in a better way.

Professor Sridhar Narayanan, a Chennai, India-based educator and corporate social responsibility advocate, believes those with the power and means to do so have the highest responsibility to ensure that our acts are supportive and responsible toward enhancing a better environment for future generations.

Professor Ronald Kendall, former president of the Society of Environmental Toxicology and Chemistry, says that with the increasing global human population and demand for food, fiber and fresh water, the issue of toxic chemical pollution will continue to be a challenging concern as we seek to provide the scientific data to enhance sustainability of resources for both humans and biodiversity on the planet.

The advanced textiles sector

While the industrial fabrics sector is heavily dependent on synthetic fibers, the industry is exploring the use of alternative fibers such as hemp, cotton and polylactic acid (PLA) fibers to develop products. Still to be sorted out is the cost issue in using new and emerging raw materials.

In addition to the increased awareness of alternative fibers, new processes are being explored. These include atmospheric plasma techniques to impart new surface finishing effects, supercritical carbon dioxide, lasers and phase-changing materials. Plasma processing techniques have become commercially viable with the wide-width machines currently available.

The advanced textile industry has adopted the use of atmospheric pressure plasma technology to reshape its manufacturing processes for enhanced sustainability, economy and efficiency. The use of continuous atmospheric plasma technology for improving the uptake and adhesion of dyes, inks, coatings and adhesives has replaced many complex and polluting chemical processes in the industry. Specifically, the use of water, harmful chemicals and energy is significantly reduced in comparison to conventional textile treatment methods, according to Rory Wolf, business unit manager of ITW Pillar Technologies in Hartland, Wis.

Cotton process improvements
PrimaLoft® Bio™ by PrimaLoft Inc. is an example of a new product with potentially high impact. A synthetic insulation made from 100 percent recycled and biodegradable fibers, the product is robust enough for repeated use and is finally biodegradable in a process that leaves behind just water, methane, carbon dioxide and biomass. Photo: PrimaLoft.

The cotton sector is also playing its part in enhancing its sustainability goals. A 10-year goal statement has been released by the U.S. cotton sector, which is making good progress toward achieving these goals, including reducing water and chemical usage, decreasing greenhouse gas emissions and decreasing energy use by 15 percent. These initiatives would help to meet the standards set in the Paris Climate Agreement of 2015.

While initial investments may be slightly higher with green approaches, in the long term, being sustainable is more profitable, says Kater Hake, vice president of Agricultural and Environmental Research of Cary, N.C.-based Cotton Inc. According to Dr. Hake, industries such as the cotton and textiles sectors must meet consumer expectations. These may vary in fashion and aesthetic senses, environmental considerations and the price they are willing to pay to gain additional value-added benefits. An important aspect that needs attention is relaying the benefits of sustainability to practitioners and consumers.

Farmers have had an impact in preserving and protecting our natural resources. Over the past 30 years, cotton growers have significantly reduced their use of irrigation water, energy and land, and have reduced greenhouse gas emissions. It is vital that we continue to conduct research that supports further efforts in sustainability, says Steve Verett, executive vice president of Lubbock, Texas-based Plains Cotton Growers Inc.

Integrated pest management and Bacillus thuringiensis (Bt) [insect-resistant] technology are also critical components in the sustainability of the cotton ecosystem. Adoption of Bt has reduced insecticide use substantially over the last two decades, according to Suhas Vyavhare, extension cotton entomologist at the Lubbock-based Texas A&M AgriLife Research and Extension Center.

Suggestions for the textile industry by seasoned industry consultants offer valuable insights. Kanti Jasani, president of Harrisburg, Pa.-based Performance and Technical Textile Consulting, says that selection of proper raw materials is an important step toward achieving sustainability goals and he emphasized the importance of training. He compared it to the restaurant business that focuses on consumers’ tastes and needs.

“It is like developing and following a cooking recipe, which can be different depending on taste, the part of the world and customs. Using more-than-needed ingredients makes the food tasteless or inedible,” he says.

Regarding processing efficiencies in the dyeing and finishing sectors, Jasani suggests using a short liquor ratio; adopting waterless, reverse flow continuous dyeing; and adopting proper process steps with optimum process ingredients and resources like water, chemicals and energy. Lastly, adopting proper automation and control systems can also be a large part of success, he says.

Professor Narayanan has a passion for leaving a better world to future generation. “We humans often act selfishly. It is our responsibility to demonstrate, practice the acts of sustainability in every way we think, and make it a way of life,” he says. “This was very much part of ancient traditions across the world.”

Clearly, proper communication among stakeholders, getting buy-in from technology adopters, and delivering cost-effective sustainable products to bring consumers on board are all vital for the growth of the advanced textiles sector.

 

Seshadri Ramkumar, Ph.D., is the director of the Nonwovens and Advanced Materials Laboratory, Texas Tech University, and a frequent contributor to Advanced Textiles Source and Specialty Fabrics Review.

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