摘要
聚乳酸(PLA)是一种可生物降解、环境友好型的热塑性脂肪族聚酯,废弃后可以完全降解,降解产物为CO2和H2O,能够维持自然界的碳循环平衡。但在常温下,PLA的性能较脆,冲击强度较低,提高其韧性对于拓宽PLA的应用范围是至关重要的。文中对近三年来国内外研究者通过共混、共聚、成型加工、纳米复合和木/塑复合等方法和途径对PLA进行增韧改性的研究进行了综述,并展望了PLA类可生物降解高分子材料的发展前景。
Polylactide （PLA） is one of the biodegradable,environment-friendly thermoplastic aliphatic polyesters. It can degradate completely after being waste. The resultant of the degradation is CO2 and water,which can keep the balance of carbon cycle on the earth. However,PLA is a brittle resin in its nature state at ambient temperature,which impedes the large-scale commercial application of PLA in situations that require a higher level of impact strength. There has been tremendous effort in developing some means to improve its deficiency. In this review we summarized the approaches and methods for toughening of PLA,such as blending,copolymerization,processing,compositing with some nano-materials and wood flour,and described the attractive prospect of PLA.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2010年第9期167-170,174,共5页
Polymer Materials Science & Engineering
基金
陕西省教育厅专项科研计划项目(09JK493)
西安工业大学校长科研基金项目(XAGDXJJ0809)
关键词
聚乳酸
增韧
共混
共聚
复合
自增韧
polylactide
toughening
blending
copolymerization
composite
self-toughening
