论文部分内容阅读
由于相对较高的价格、较慢的结晶速率、较弱的力学性能、较差的热稳定性、较窄的加工窗口和较慢的生物降解速率等自身的弱点,生物降解高分子材料并未如通用高分子材料一样得到广泛应用,制备以生物降解高分子为基体的纳米复合材料是有效的改性方法之一。本文结合作者近年来在生物降解高分子改性领域中的工作,对以笼型倍半硅氧烷(POSS)作为纳米填料改性左旋聚乳酸(PLLA)和聚ε-己内酯(PCL)的研究进行简单综述,POSS可有效提高PLLA和PCL基体的结晶速率和力学性能,并促进了聚合物基体的水解过程。
Biodegradable polymer materials have not been available due to their own weaknesses such as relatively high price, slower crystallization rate, weaker mechanical properties, poorer thermal stability, narrower processing window and slower biodegradation rate As widely used as general-purpose polymer materials, the preparation of biodegradable polymer-based nanocomposites is one of the effective modification methods. In this paper, combining the work of authors in the field of biodegradable polymer modification in recent years, the effects of PLLA and poly (ε-caprolactone) (PCL) modified with cage silsesquioxane (POSS) , POSS can effectively improve the crystallization rate and mechanical properties of PLLA and PCL matrix and promote the hydrolysis of polymer matrix.