Kinetic analysis of the thermooxidative degradation of poly(vinyl-chloride) in poly(vinyl chloride)/methyl methacrylate-butadiene-styrene blends 2. Nonisothermal degradation

被引：18
|
作者：
Andricic, B [1 ]
Kovacic, T [1 ]
Klaric, L [1 ]
机构：
[1] Univ Split, Fac Chem Technol, Dept Organ Chem Technol, Split 21000, Croatia
来源：
POLYMER DEGRADATION AND STABILITY | 2003年 / 79卷 / 02期
关键词：
nonisothermal kinetics; PVC/MBS blends; thermooxidative degradation;
D O I：
10.1016/S0141-3910(02)00290-2
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The thermooxidative degradation of poly(vinyl chloride)/(methyl methacrylate-butadiene-styrene) (PVC/MBS) blends was investigated by nonisothermal thermogravimetry in air. Measurements were carried out in the temperature range of 50-650 degreesC. The kinetic parameters (E-a and A) of the first degradation step were determined by applying the Flynn-Wall-Ozawa method. Their relationship through a compensation effect was discussed and an apparent compensation effect was found. The addition of MBS changes the rate of PVC dehydrochlorination in the blends, while in the blends with 15 and higher MBS ratio, the reaction scheme of degradation also changes. (C) 2002 Elsevier Science Ltd. All rights reserved.
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页码：265 / 270
页数：6
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