It can be naturally degraded in nature, and can be quickly decomposed into carbon dioxide and water under the action of microorganisms in soil or seawater. When burning, toxic gas will not be discharged to cause pollution, and carbon cycle will be realized. It is a kind of sustainable ecological fiber.
Polylactic acid fiber has similar physical properties to PET fiber (polyester fiber), which not only has high crystallinity, but also has the same transparency. And because of its high crystallinity and orientation, it has high heat resistance and high strength, and can be spun by conventional processing technology without special equipment and operation technology.
Application of PLA fiber
1, the application of clothing
Polylactic acid fiber includes filament, short fiber, monofilament and multifilament, which can be used for spinning fabrics and nonwovens. PLA fiber blended knitted fabric feels soft and can be used to process seamless underwear, ultra-thin sports bra and so on.
Poly (lactic acid) filament for warp knitting has good wicking performance and can be used to process sportswear fabrics and swimsuit fabrics. Polylactic acid fiber woven fabric has a natural and clean appearance, elegant and generous, and can be used as high-grade shirt fabric, home textile fabric and so on.
2. Medical application
Because it is biodegradable, it does not need to be taken out by secondary operation, and can be widely used to make medical and health protection articles, such as medical surgical sutures, dressings, tissue engineering stents and so on.
3. Disposable sanitary products
PLA is a thermoplastic polymer with good toughness, good biocompatibility, skin-friendly and breathable properties. Can be made into sanitary napkins, pads, diapers, medical gauze, bandages, bed sheets, advanced antibacterial rags and other products.
4, the application of daily necessities
At present, two kinds of filter materials are still mainly used in the market, one is cellulose diacetate fiber and the other is polypropylene fiber. If polylactic acid fiber is used to make cigarette filter, it is not only widely available and degradable, but also has the ability to absorb and remove harmful components in flue gas because of its polar molecular structure.
Therefore, the use of PLA filter will bring great changes to the cigarette filter industry. In addition, the mask meltblown cloth is also developing degradable energy.