期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 105, 期 16, 页码 3174-3181出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp003223k
关键词
-
Kinetic theory in regards to the basic understanding of reaction order as it relates to polymer degradation is discussed. This new theory is then tested by determining the kinetic parameters for dehydrochlorinated poly(vinyl chloride) using thermogravimetric analysis. Four different mechanisms of degradation were deduced from four sets of kinetic parameters. The calculated kinetic parameters were apparent reaction order, apparent activation energy, and apparent frequency factor as determined by the original Freeman and Carroll model. The four regions/mechanisms attained by the theory from the data are in order of appearance: final dehydrochlorination: random chain scission: cyclization; coke degradation. The data indicate transition regions between the individual regions where two mechanisms are competing with one another. Also, a method for obtaining the optimal heating rate from a set of heating rates is discussed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据