聚丁二烯
化学
端羟基聚丁二烯
热解
高氯酸铵
高分子化学
质谱法
单体
离解(化学)
小学(天文学)
降级(电信)
反应机理
遥爪聚合物
化学分解
有机化学
共聚物
聚合物
分解
推进剂
色谱法
“结束”组
催化作用
物理
电信
计算机科学
天文
作者
Kannan Ganesh,Subramanian Sundarrajan,K. Kishore,K. N. Ninan,Benny K. George,M. Surianarayanan
出处
期刊:Macromolecules
[American Chemical Society]
日期:1999-12-23
卷期号:33 (2): 326-330
被引量:44
摘要
This is the first report on the analysis of primary degradation products of a widely used commercial propellant binder, viz. hydroxy-terminated polybutadiene (HTPB), which has been carried out by direct pyrolysis mass spectrometry. The mechanism of degradation involves a radical process forming cyclic compounds as well as β-CH transfer reactions to form linear oligomers. On the basis of heats of formation data, it was found that the formation of 1,3-butadiene monomer is not favored during the primary chain scission process. However, its formation appears to emanate from the dissociation of high molecular weight cyclics/linear oligomers. In the presence of strong oxidizers such as ammonium perchlorate, the degradation pattern of HTPB, as observed in pyrolysis−gas chromatography/mass spectrometry analysis, is significantly affected, indicating its influence on HTPB degradation.
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