ISOTHERMAL CIS-TRANS ISOMERIZATION BEHAVIOR OF POLYACETYLENE FILMS

被引：2
|
作者：
KYOTANI, H
SHIMOMURA, M
ITO, K
TANABE, Y
ZHANG, YX
AKAGI, K
SHIRAKAWA, H
机构：
[1] NATL INST MAT & CHEM RES,TSUKUBA,IBARAKI 305,JAPAN
[2] UNIV TSUKUBA,INST MAT SCI,TSUKUBA,IBARAKI 305,JAPAN
来源：
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1995年 / 33卷 / 04期
关键词：
POLYACETYLENE; ISOTHERMAL CIS-TRANS ISOMERIZATION; DSC; STRETCHED EXPONENTIAL FUNCTION; ACTIVATION ENERGY;
D O I：
10.1002/polb.1995.090330407
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Isothermal cis-trans isomerization behavior was studied by differential scanning calorimetry for conventional Shirakawa polyacetylene (S-PA) film and highly stretchable polyacetylene (hs-x) films synthesized using catalysts aged at high temperature. The rate of isomerization is slower for S-PA than for hs-x. Kinetic results of isomerization are analyzed by a stretched exponential function with exponent n (0 < n < 1), which is different from the previously assumed single exponential function. An activation energy of 31 kcal/mol was obtained for all the samples. (C) 1995 John Wiley & Sons, Inc.
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收藏
页码：581 / 585
页数：5
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