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

页码：1060 / 1065

页数：6