Synthesis and characterization of epoxy polymers containing azobenzene groups that exhibit optical birefringence

被引：40
作者：
Fernandez, Raquel [1 ]
Mondragon, Inaki [1 ]
Oyanguren, Patricia A. [2 ]
Galante, Maria J. [2 ]
机构：
[1] Univ Pais Vasco Euskal Herriko Unibertsitatea, Dept Chem & Environm Engn, Mat Technol Grp, San Sebastian 20018, Spain
[2] INTEMA Univ, Nac Mar Plata CONICET, RA-4302 Mar Del Plata, Argentina
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2008年 / 68卷 / 01期
关键词：
azobenzene chromophore; epoxy; birefringence;
D O I：
10.1016/j.reactfunctpolym.2007.10.016
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A push-pull azo dye (DO3) was used as photosensitive substance to satisfactorily synthesize new epoxy polymers containing azo groups covalently linked. Three different amines BA, TA and MXDA were used as hardeners. Materials with different chemical structure and azo group concentration were prepared. The polymerization kinetics was followed using SEC, FTIR and DSC. It was observed that polymerization rate increases with the azo chromophore incorporation and with the photosensitive component concentration in the reaction precursors. The photoinduced birefringence of the obtained films has been analyzed. A completely reversible optical orientation was reached. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：70 / 76
页数：7
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