Liquid-crystalline thermosets from mesogenic dimeric epoxy resins by tertiary amine catalysis

被引：23

作者：

Ribera, D ^{[1
]}

Mantecón, A ^{[1
]}

Serra, A ^{[1
]}

机构：

[1] Univ Rovira & Virgili, Dept Quim Analit & Quim Organ, Tarragona 43005, Spain

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2002年 / 40卷 / 22期

关键词：

liquid-crystalline polymers (LCP); crosslinking; calorimetry; epoxy resins; liquid-crystalline thermosets;

D O I：

10.1002/pola.10457

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Liquid-crystalline thermosets (LCTs) were prepared by the curing of difunctional liquid-crystalline dimeric epoxy monomers with imine moieties in the mesogenic core and central spacers of different lengths. Tertiary amines were used as catalysts in different proportions. The locked mesophases of the LCTs were characterized by polarized optical microscopy and wide-angle X-ray scattering and identified as smectic-C, regardless of their smectic-A or smectic-C initial state. The influence of a 7.1-T magnetic field on the macroscopic orientation of these materials was studied by dynamic mechanical analysis, and the orientation parameter was determined by IR dichroism. (C) 2002 Wiley Periodicals, Inc.

引用

页码：3916 / 3926

页数：11

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