摘要
PLA因具有良好的生物降解性、生物可吸收性和生物相容性,在食品包装和农业等领域有广泛应用,但因其有性脆、玻璃化转变温度较高、柔韧性差等缺点,需对其进行增韧改性以提高其整体性能。本文综述了PLA通过复合、增塑、共混、共聚、表面改性或交联等改性方法增加其柔韧性的国内外最新研究进展。
Polylactic acid(PLA) is widely used in packaging,agriculture because it is a biodegradable,bioabsorbable and biocompatible polymer.But it is brittle and hard and has poor pliability because it has a high glass transition temperature.Thus,it has to be modified to enhance its pliability to improve over all performance.In this paper,the latest recent research progress of toughening modification of PLA via compound,plastic,blending,copolymerization,surface modification and crosslinking at home and abroad is described in detail.
关键词
PLA
增韧
改性
研究现状
polylactic acid
toughness
modi cation
research status
