Direct melt crystal growth of isotactic polybutene-1 trigonal phase

被引：26

作者：

Yamashita, Motoi ^{[1
]}

Ueno, Satoru ^{[2
]}

机构：

[1] Ritsumeikan Univ, Dept Biosci & Bioinformat, Shiga 5258577, Japan

[2] Hiroshima Univ, Fac Appl Biol Sci, Hiroshima 7398528, Japan

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 2007年 / 42卷 / 12期

关键词：

crystallization; melt; isotactic polybutene-1; polymorphs; growth kinetics;

D O I：

10.1002/crat.200711009

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The morphology, crystalline structure and crystal growth kinetics of melt-crystallized thin isotactic polybutene-1 films have been studied with transmission electron microscopy, electron diffraction and optical microscopy. It is demonstrated that a bypass of tetragonal phase crystallization and direct melt crystal growth of the trigonal phase can be achieved via self-seeding at atmospheric pressure using solution-grown trigonal crystals as nuclei. Electron microscopy and optical microscopy observations show that melt-crystallized isotactic polybutene-1 single crystals of the trigonal phase have rounded or hexagonal morphologies around 75 degrees C. The growth rate of trigonal crystals in the melt has been obtained by in-situ optical microscopy. The growth rate of trigonal crystals in the melt is 1/100 and 1/1000 that of tetragonal crystals in the melt around 70 and 90 degrees C, respectively. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：1222 / 1227

页数：6