The thermal degradation of nanocomposites that contain an oligomeric ammonium cation on the clay

被引:50
|
作者
Su, SP [1 ]
Wilkie, CA [1 ]
机构
[1] Marquette Univ, Dept Chem, Milwaukee, WI 53201 USA
关键词
nanocomposites; TGA/FTIR; polystyrene;
D O I
10.1016/S0141-3910(03)00279-9
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 thermal degradation of polystyrene, high-impact polystyrene, ABS terpolymer, poly(methyl methacrylate), polypropylene and polyethylene nanocomposites has been studied using thermogravimetric analysis coupled to Fourier transform infrared spectroscopy, TGA/FT-IR. The nanocomposites that have been studied include immiscible, intercalated and exfoliated systems and the evolved gases do not depend upon the type of nanocomposite and are qualitatively similar to those of the virgin polymer. In the case of the styrenics, the presence of clay promotes the production of oligomer, rather than monomer. It is suggested that this change in evolved products may offer an explanation for why some polymers give large reduction in peak heat release rates while others give much smaller reductions. According to this notion, any polymer that undergoes degradation to produce both oligomer and monomer should give a large reduction in peak heat release rate. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:347 / 362
页数:16
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