Continuous refinement of raw material technology
In the development of bio-based chemical fibers, the importance of bio-based raw material innovation is becoming more and more significant, and its development technology is becoming more and more refined, from simple primary processing and utilization to gene modification and expression combined with bioengineering technology, to purification, separation and reprocessing and utilization of microscopic chemical components. The utilization of raw materials is becoming more and more diversified, from the development of traditional cellulose and lignin components to the utilization of biological active ingredients, such as the supercritical extraction of lavender, Wormwood, mint leaves, apocellae, torreya grandis and other plant active ingredients, adding "flavoring" elements to bio-based chemical fibers.
We will pay more attention to green and low-carbon development
Bio-based fiber has sustainable development advantages from the source, and it is the future trend to realize green and low-carbon development in the whole life cycle on this basis. The first is the green development of raw material processing technology. The raw material development technology of regenerated cellulose fiber such as viscose fiber adopts chemical treatment, acid-base hydrolysis, high-temperature cooking and other processes to make pulping, which often causes great damage to the environment. Therefore, the development of efficient, pollution-free and low-cost pretreatment means will be the main technical direction of cellulose raw material pretreatment in the future. Using microbial fermentation method to prepare high-purity cellulose breaks through the traditional idea of relying solely on plants with long growth cycle to prepare cellulose fibers, and develops the technology of preparing high-purity cellulose raw materials based on microbial system, which can completely eliminate the pollution in the process of raw material preparation and has the advantage of green environmental protection.
Secondly, physical separation of lignin, hemicellulose and cellulose by ultrasonic assisted steam explosion method is one of the trends of cellulose raw material treatment in the future. In terms of green products, we focus on developing bio-based fibers and products such as coloring of raw liquid, stain resistance and easy cleaning, high shape preservation (free ironing), warmth and cool feeling, so that the products can be relatively low-carbon and environmentally friendly in the process of use, maintenance or the end of service life.
Product design is more professional
Bio-based regenerated fibers have gradually expanded from traditional viscose and Lyocell to seaweed fiber and chitosan fiber. Bio-based synthetic fibers have expanded from bio-based PTT and PLA fibers to other bio-based polyester (PHB, PBT, PET, etc.), bio-based polyamides (PA6, PA66, PA56, PA69, PA610), bio-based polyethylene, bio-based polypropylene, bio-based PVC, bio-based TPU and starch-based polymers, etc. In this process, the development of bio-based monomer varieties plays an irreplaceable role.
With the continuous improvement of fiber processing level, the development of bio-based fiber materials should not only pay attention to its quality improvement, but also need to give it new functions. Fully tap the performance characteristics of different biological base of synthetic fibres, giving full play to the advantages of its performance, docking apparel, home textile, automobile interior trim, the needs of different application fields such as health care products, more professional, precise design, build a monomer, an industrial specialization, the new route, to the road of quality and brand integration.
source:https://www.tnc.com.cn/info/c-001001-d-3719840.html