Mechanical and thermal induced chain conformational transformations in syndiotactic polypropylene (sPP)

被引:17
作者
Bonnet, M [1 ]
Yan, S
Petermann, J
Zhang, B
Yang, D
机构
[1] Univ Dortmund, Dept Chem Engn, Inst Mat Sci, D-44221 Dortmund, Germany
[2] Chinese Acad Sci, Changchun Inst Appl Chem, Changchun 130022, Peoples R China
关键词
D O I
10.1023/A:1004868320287
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Stretching a stacked sPP lamellar morphology at room temperature leads to a mechanical induced transformation from the (t(2)g(2))(2) (helical) into the (tttt) (zigzag) chain conformation of the polymer. The so prepared samples exhibit after annealing above 80 degreesC a thermal induced retransformation into the cell I and cell III crystal structure of the helical chain conformation. The mechanical induced chain conformational transformation as well as the thermal induced retransformation was studied by means of transmission electron microscopy and electron diffraction. (C) 2001 Kluwer Academic Publishers.
引用
收藏
页码:635 / 641
页数:7
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