What is bio-based chemical fiber?
Bio-based fiber or bio-source fiber (Bio-based fiber) refers to fibers made from renewable organisms or biological extracts. It is different from fibers produced from non-renewable petrochemical resources such as coal and oil.
There are many varieties of bio-based fibers. For the convenience of research and use, they can be classified from different angles:
1) From the biological properties, they can be divided into animal fibers, plant fibers and microbial fibers;
2) From the industrial classification, they can be divided into agricultural by-product fibers and marine by-product fibers;
3) According to the production process, bio-based fibers can be divided into three categories:
▲ Bio-based virgin fibers, animal and plant fibers that are directly used after being processed by physical methods;
▲ Bio-based regenerated fibers, that is, natural animals and plants are used as raw materials, and spinning solutions are made by physical or chemical methods, and then prepared by appropriate spinning processes;
▲ Bio-based synthetic fibers, biomass is used as raw materials, high-purity monomers are made by chemical methods, and then high-molecular-weight polymers are obtained through polymerization reactions, and then processed into fibers by appropriate spinning processes. Bio-based regenerated fibers and bio-based synthetic fibers are collectively referred to as bio-based chemical fibers.
So what is the difference between these two types of fibers? Bio-based regenerated fibers do not change the original chemical structure of biomass macromolecules. The spinning process is a reconstruction of their physical form, which only changes the aggregate structure. The chemical and physical properties of bio-based synthetic fibers depend on the monomers used, which has nothing to do with the source of the monomers. In other words, synthetic fibers can be made of bio-based monomers or petroleum-based monomers, and the properties of fibers made from the same monomers are the same. Bio-based synthetic fibers emphasize that their monomers come from organisms.
