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Photoinitiated polymerization of a dimethacrylate oligomer part 3. Postpolymerization study

被引：45
作者：
Lecamp, L
Youssef, B
Bunel, C
Lebaudy, P
机构：
[1] Inst Natl Sci Appl Rouen, Mat Macromol Lab, F-76131 Mt St Aignan, France
[2] Univ Rouen, Lab Etud & Caracterisat Composes Amorphes & Polym, F-76821 Mt St Aignan, France
来源：
POLYMER | 1999年 / 40卷 / 23期
关键词：
dimethacrylate oligomer; photoinitiated reaction; trapped radicals;
D O I：
10.1016/S0032-3861(99)00042-7
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 effects of the presence of trapped radicals after UV irradiation were studied on a dimethacrylate oligomer. The postpolymerization reaction was characterized by differential scanning calorimetry and dynamic mechanical analysis. The photopolymerization was realized with 2,2-dimethyl-2-hydroxyacetophenone (Darocur 1173) as radical photoinitiator by using isothermal photocalorimetry. The postpolymerization was clearly shown in the isothermal mode and under N-2 atmosphere by following the variation of the glass transition temperature of the samples. The influence of crosslinking density, O-2 and thermal postcure were investigated. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：6313 / 6320
页数：8
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