MOLECULAR-WEIGHT AND PYROLYSIS PRODUCTS DISTRIBUTION OF POLYMERS .1. POLYSTYRENE

被引：80

作者：

AUDISIO, G

BERTINI, F

机构：

[1] Istituto di Chimica delle Macromolecole, C.N.R., 20133 Milan

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 1992年 / 24卷 / 01期

关键词：

AVERAGE ZIP LENGTH; GAS CHROMATOGRAPHY; POLYSTYRENE; PYROLYSIS;

D O I：

10.1016/0165-2370(92)80005-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Eight samples of polystyrene with various known molecular masses and polydispersity (M(w)BAR/M(n)BAR close to 1 have been pyrolyzed at 600 and 750-degrees-C. The pyrolysis products were identified by means of gas chromatography/mass spectrometry and their relative percentages calculated. We calculate the parameters of the logarithmic correlations between the molecular mass of the pyrolyzed samples and the relative amount of the pyrolysis products. Styrene production increases with the molecular mass of the polymer, when the other products decrease. Benzene formation becomes significant with an increase in degradation temperature. The results for each pyrolysis product are reported.

引用

页码：61 / 74

页数：14

共 14 条

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