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Kinetics of the thermal and thermo-oxidative degradation of a polystyrene-clay nanocomposite
被引:130
作者:
Vyazovkin, S
Dranca, I
Fan, XW
Advincula, R
机构:
[1] Univ Alabama Birmingham, Dept Chem, Birmingham, AL 35294 USA
[2] Univ Houston, Dept Chem, Houston, TX 77204 USA
关键词:
degradation;
fire resistance;
nanocomposites;
thermogravimetric analysis (TGA);
D O I:
10.1002/marc.200300214
中图分类号:
O63 [高分子化学(高聚物)];
学科分类号:
070305 ;
080501 ;
081704 ;
摘要:
Thermogravimetry and differential scanning calorimetry have been used to study the thermal and thermo-oxidative degradation of polystyrene (PS) and a PS-clay nanocomposite. An advanced isoconversional method has been applied for kinetic analysis. Introduction of the clay phase increases the activation energy and affects the total heat of degradation, which suggests a change in the reaction mechanism. The obtained kinetic data permit a comparative assessment of the fire resistance of the studied materials.
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页码:498 / 503
页数:6
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