右旋聚乳酸薄膜的结晶形态

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (4): 806.

右旋聚乳酸薄膜的结晶形态

李海东^1,2, 林驭寒¹, 聂伟¹, 邓超¹, 陈学思¹, 姬相玲¹

1. 中国科学院长春应用化学研究所, 高分子物理与化学国家重点实验室, 长春 130022;
2. 中国科学院研究生院, 北京 100049

收稿日期:2009-07-07 出版日期:2010-04-10 发布日期:2010-04-10
通讯作者: 姬相玲, 女, 博士, 研究员, 主要从事高分子溶液及纳米材料的研究. E-mail: xlji@ciac.jl.cn
基金资助:
国家自然科学基金创新群体(批准号: 50921062)资助.

Crystalline Morphologies of Poly(D-lactic acid) Thin Films

LI Hai-Dong^1,2, LIN Yu-Han¹, NIE Wei¹, DENG Chao¹, CHEN Xue-Si¹, JI Xiang-Ling^1*

1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Received:2009-07-07 Online:2010-04-10 Published:2010-04-10
Contact: JI Xiang-Ling. E-mail: xlji@ciac.jl.cn
Supported by:
国家自然科学基金创新群体(批准号: 50921062)资助.

摘要/Abstract

摘要：

利用旋涂法制备一系列右旋聚乳酸(PDLA)均聚物薄膜, 在不同溶液浓度、结晶温度、结晶时间、溶剂和基底条件下对其进行等温结晶处理, 得到直径和长度大小不等的短棒和纤维束球状等形态, 利用原子力显微镜(AFM)研究了不同条件下所得到的PDLA薄膜的结晶形态. 提出了可能的结晶演变过程和生长模型. 通过控制不同的结晶条件, 可以得到PDLA均聚物薄膜的不同结晶形态.

关键词: 右旋聚乳酸; 旋涂法; 薄膜; 结晶形态

Abstract:

Crystalline morphologies of spin-coated poly(D-lactic acid)(PDLA) thin films under different conditions were investigated by atomic force microscopy (AFM) technique. The morphology evolution of the PDLA crystalline was tuned by changing concentration of the polymer solution, the crystallization time, solvent types and substrates. Different crystalline morphologies, such as short rod, fiber bundle and spherical structure were obtained. Meanwhile, the possible mechanism for crystalline morphology evolution was proposed.

Key words: Poly(D-lactic acid)(PDLA); Spin-coating; Film; Crystalline morphology

TrendMD:

李海东, 林驭寒, 聂伟, 邓超, 陈学思, 姬相玲. 右旋聚乳酸薄膜的结晶形态. 高等学校化学学报, 2010, 31(4): 806.

LI Hai-Dong, LIN Yu-Han, NIE Wei, DENG Chao, CHEN Xue-Si, JI Xiang-Ling*. Crystalline Morphologies of Poly(D-lactic acid) Thin Films. Chem. J. Chinese Universities, 2010, 31(4): 806.