Crystal growth in poly(L-lactide) thin film revealed by in situ atomic force microscopy

被引：62
|
作者：
Kikkawa, Y
Abe, H
Fujita, M
Iwata, T
Inoue, Y
Doi, Y
机构：
[1] Tokyo Inst Technol, Dept Innovat & Engn Mat, Midori Ku, Yokohama, Kanagawa 2268502, Japan
[2] Japan Sci & Technol Corp, SORST Grp, Midori Ku, Yokohama, Kanagawa 2268502, Japan
[3] Riken Inst Phys & Chem Res, Polymer Chem Lab, Wako, Saitama 3510198, Japan
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2003年 / 204卷 / 15期
关键词：
atomic force microscopy; crystal growth; enzymatic degradation; in situ observation; poly(L-lactide);
D O I：
10.1002/macp.200350044
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Direct visualization of crystal growth in poly(L-lactide) thin films was carried out by using a temperature-controlled atomic force microscopy (AFM). At the initial stage of crystallization, edge-on lamellar crystals have nucleated and elongated. Subsequently, the edge-on lamellar crystals showed S-shaped morphology and changed their orientation from edge-on manner to flat-on one. The curvature of edge-on lamellar crystal has been discussed in terms of inclination and distortion of polymer chains in the crystal. In addition, mechanism on the formation of flat-on crystal from edge-on lamellae was proposed as derivative growth on the basis of in situ AFM observation of crystal growth and enzymatic degradation.
引用
收藏
页码：1822 / 1831
页数：10
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