What are the disadvantages of polylactic acid fiber?

1. Polylactic acid has a large number of ester bonds and poor hydrophilicity, which reduces its biocompatibility with other substances;

2. The relative molecular weight distribution of the polymerized product is too wide, and the polylactic acid itself is a linear polymer, which makes the strength of the polylactic acid material often unable to meet the requirements, high brittleness, low heat distortion temperature, and poor impact resistance.

3. The degradation cycle is difficult to control.

4. The price is too expensive. The price of lactic acid and the polymerization process determine the higher cost of PLA. This has prompted people to carry out in-depth research on the modification of polylactic acid.