Poly (lactic acid) resin composition for preparing transparent and impact-resistant article, article prepared therefrom and preparation process thereof

摘要

A poly(lactic acid) resin composition, including: (a) a poly(lactic acid) resin; and (b) a modifier which is in the form of nanoparticle aggregate with a particle size of less than 1000 nm and uniformly dispersed in the poly(lactic acid) resin, wherein the nanoparticle aggregate is obtained from the polycondensation of at least one metal/nonmetal alkoxide, at least one metal/nonmetal alkoxide having at least one functional group capable of reacting with the poly(lactic acid) resin, or a mixture thereof. A process for preparing a transparent and impact-resistant article from the poly(lactic acid) resin composition of the invention, and articles prepared therefrom are also provided.

主权项

1. A poly (lactic acid) resin composition, comprising:
(a) a poly (lactic acid) resin; and (b) a modifier which is in the form of nanoparticle aggregate with a particle size of less than 1000 nm and uniformly dispersed in the poly(lactic acid) resin, wherein the nanoparticle aggregate is obtained from the polycondensation of at least one metal/nonmetal alkoxide selected from the group consisting of tetramethoxysilane (TMOS) and tetraethoxysilane (TEOS) and at least one metal/nonmetal alkoxide having at least one functional group capable of reacting with the poly (lactic acid) resin selected from the group consisting of glycidoxypropyltrimethoxysilane (GPTMS), glycidoxypropylmethyldiethoxysilane, and glycidoxypropyltriethoxysilane, wherein the content of the modifier is 0.1 to 50 weight parts based on 100 weight parts of the poly (lactic acid) resin, and the content ratio of the at least one metal/nonmetal alkoxide to the at least one metal/nonmetal alkoxide having at least one functional group capable of reacting with the poly (lactic acid) resin is 40:60 to 60:40.