化工学报Issue(2)：390-396,7.DOI:10.11949/j.issn.0438-1157.20150695
不同构型聚乳酸共混体系的立构复合结晶研究进展
Research progress on stereocomplex crystallization of poly(lactic acid) enantiomeric blends
摘要
Abstract
Poly(L-lactic acid) (PLLA) and poly(D-lactic acid) (PDLA) can form stereocomplex (sc) crystallites in their racemic blends. Compared to the homocrystalline poly(lactic acid) (PLA), sc-type PLA has much better heat and chemical resistances. Therefore, sc crystallization of PLA has been an effective method to improve its physical properties. However, the formations of homo and sc crystallites are competing in the crystallization of PLLA/PDLA racemic blends. A critical issue to prepare the heat-resistant sc-type PLA is to understand the formation conditions and mechanism of sc crystallization, and further to control and promote the extent of sc crystallization. Sc crystallization is affected by a variety of factors such as the chemical structure of polymer component, crystallization and processing conditions in PLLA/PDLA racemic blends, and their influential mechanisms are very complicated. According to the various factors influencing sc crystallization, this paper will review the research progress of sc crystallization behavior and preparation of sc materials for PLLA/PDLA blends in recent years from the aspects of polymer molecular weight, stereoregularity, blend ratio, polymer topology, crystallization method and condition, and addition of additive or other components. It is expected that this review can provide a theoretical guideline for the preparation of heat-resistant biobased PLA materials.关键词
聚乳酸/共混/立构复合结晶/分子量/结晶条件Key words
poly(lactic acid)/blend/stereocomplex crystallization/molecular weight/crystallization condition分类
化学化工引用本文复制引用
余承涛,韩理理,包建娜,谢青,单国荣,包永忠,潘鹏举..不同构型聚乳酸共混体系的立构复合结晶研究进展[J].化工学报,2016,(2):390-396,7.基金项目
国家自然科学基金项目（21274128,21422406）。@@@@supported by the National Natural Science Foundation of China (21274128,21422406) （21274128,21422406）
