Studies on thermal degradation kinetics of thermal and UV cured N-(4-hydroxy phenyl) maleimide derivatives

被引:8
作者
Pitchaimari, G. [1 ]
Vijayakumar, C. T. [1 ]
机构
[1] Kamaraj Coll Engn & Technol, Dept Polymer Technol, Chittoor 625701, Tamil Nadu, India
关键词
Fuctionalized maleimide; Thermal and photopolymerization; Crosslinking; TGA; Model free kinetics; MODEL-FREE; CATIONIC POLYMERIZATION; TRANSITION TEMPERATURE; GLASS-TRANSITION; CURING KINETICS; COPOLYMERS; EPOXY; METHACRYLATE; COMPUTATIONS; ENERGY;
D O I
10.1016/j.tca.2013.10.020
中图分类号
O414.1 [热力学];
学科分类号
摘要
The results of the studies concerning the thermal and photo initiated copolymerization of N-(4-acryloyloxy phenyl) maleimide (AX), N-(4-methacryloyloxy phenyl) maleimide (MAX) and N-(4-cyanato phenyl) maleimide (CNX) with N-vinyl-2-pyrrolidone (NVP) were presented. The structures of all the copolymers prepared were confirmed by FTIR studies. The thermogravimetric studies of both the thermal and UV cured materials indicated that the UV cured materials were comparatively thermally more stable than the thermally polymerized materials during thermal degradation. Of all the materials investigated, liquid composition having NVP and CNX cured by UV irradiation showed better thermal stability. The degradation kinetic studies using Flynn-Wall-Ozawa, Vyazovkin and Friedman methods showed that the activation energies (Ea) for the thermal degradation of polymeric materials cured by UV irradiation were slightly higher than the Ea values calculated for the thermally polymerized materials. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:70 / 80
页数:11
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