Kinetics of epoxy-amine curing accompanied by the formation of liquid crystalline structure

被引：74
|
作者：
Vyazovkin, S [1 ]
Mititelu, A
Sbirrazzuoli, N
机构：
[1] Univ Alabama, Dept Chem, Birmingham, AL 35294 USA
[2] Univ Nice, CMOM, Thermokinet Grp, F-06108 Nice 2, France
[3] Inst Macromol Chem Petru Poni, Iasi 6600, Romania
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2003年 / 24卷 / 18期
关键词：
activation energy; differential scanning calorimetry (DSC); isoconversional kinetic analysis; kinetics (polym.); liquid crystalline epoxy thermoset;
D O I：
10.1002/marc.200300023
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The curing of a mesomorphic epoxy has been studied by polarized light microscopy (PLM) and differential scanning calorimetry. PLM in combination with wide-angle X-ray diffraction proves the formation of a liquid crystalline (LC) structure. An advanced isoconversional method reveals that the formation of the LC structure is accompanied by a dramatic decrease in the effective activation from similar to60 to similar to10 kJ . mol(-1). A kinetic model of the phenomenon has been discussed.
引用
收藏
页码：1060 / 1065
页数：6
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