PLA fiber has good biodegradability and can be completely decomposed into CO2 and H2O in nature after being discarded. Through photosynthesis, the two can become starch, the raw material of lactic acid. If the PLA fiber is buried together with other organic waste, it will decompose within a few months and can be completely decomposed into CO2 and H2O.
Physical and mechanical properties
PLA Among all biodegradable polymers, it has the highest melting point, high crystallinity and good transparency. It is suitable for fiber, film and molded products. The physical properties of PLA fibers are close to PET fibers (polyester) and PA fibers (nylon), and the dyeing performance is superior to that of PET fibers.
Because PLA fiber is biocompatible and comfortable to take, it can be safely implanted into the body without toxic side effects.
After the PLA fiber is exposed to outdoor exposure for 500 h, the strength can be kept at about 55%.