Thermal properties of fullerene (C60) containing poly(alkyl methacrylate)s

被引：25

作者：

Katiyar, Rashmi ^{[1
]}

Bag, Dibyendu S. ^{[2
]}

Nigam, Indira ^{[1
]}

机构：

[1] Harcourt Butler Technol Inst, Dept Plast Technol, Kanpur 208002, Uttar Pradesh, India

[2] DMSRDE, Kanpur 208013, Uttar Pradesh, India

来源：

THERMOCHIMICA ACTA | 2013年 / 557卷

关键词：

Fullerene containing polymers; Glass transition temperature; Thermal degradation; TRIPHENYLBISMUTHONIUM YLIDE; POLY(METHYL METHACRYLATE); DEGRADATION; COPOLYMERIZATION; DECOMPOSITION;

D O I：

10.1016/j.tca.2013.01.027

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this investigation, thermal properties of fullerene (C-60) containing poly(alkyl methacrylate)s have been studied. The glass transition temperatures (T-g) and thermal stability of C-60 containing poly(methyl methacrylate) (FMMA) and poly(n-butyl methacrylate) (FBMA) were more than that of the corresponding virgin polymers and the values increased with the increasing fullerene content in such polymers. Chemically linked bulky fullerene imparts chain rigidity and hence restricts segmental motion causing higher T-g values for C-60 containing polymers than that of the polymers without fullerene. Thermal degradation of C-60 containing poly(alkyl methacrylate)s is hindered prominently due to the presence of fullerene which scavenges the macroradicals formed during polymer degradation. The mechanism of thermal degradation of C-60 containing poly(alkyl methacrylate)s is, therefore, associated mainly with three types of reactions: (a) end chain scission, (b) random chain scission and (c) reaction of fullerene (C-60) with macroradicals obtained in thermal degradation process. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：55 / 60

页数：6

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