聚丙烯腈
共单体
共聚物
降级(电信)
高分子化学
傅里叶变换红外光谱
甲基丙烯酸
聚合物
材料科学
醋酸乙烯酯
化学工程
复合材料
计算机科学
电信
工程类
作者
Michael M. Coleman,G.T. Sivy
出处
期刊:Carbon
[Elsevier]
日期:1981-01-01
卷期号:19 (2): 123-126
被引量:90
标识
DOI:10.1016/0008-6223(81)90118-4
摘要
Polyacrylonitrile (PAN) and copolymers of PAN containing comonomers of vinyl acetate (VAc), methacrylic acid (MAA), acrylamide (AM) and other acrylics are important precursors to the formation of carbon fibers. Fourier transform IR spectroscopy has proved to be an excellent technique with which to study the degradation of these polymers in the initial stages where cyclization of the polymer chain takes place. In this communication we present comparative rate studies of the degradation of three PAN copolymers containing approx. 4 wt% of VAc, MAA and AM respectively. The rate of degradation is observed to be markedly dependent upon the chemical structure of the comonomer.
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