Isothermal thermogravimetric degradation of poly(vinyl chloride)/chlorinated polyethylene blends stabilized with Ca/Zn stabilizer

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作者：
Stipanelov-Vrandecic, N.
Klaric, I.
机构：
[1] Kemijsko-Tehnološki Fakultet, Split, Croatia
[2] Kemijsko-Tehnološki Fakultet, Zavod za Organsku Kemijsku Tehnologiju, Teslina 10/V, HR-21000 Split, Croatia
来源：
Polimeri (Zagreb) | 2000年 / 21卷 / 06期
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摘要：
The thermal degradation of poly(vinyl chloride)/chlorinated polyethylene (PVC/PE-C) blends of different compositions and the influence of physiologically harmless Ca/Zn stabilizer on the thermal stability of the blends were investigated by means of isothermal thermogravimetry. The nonstabilized and stabilized PVC+PE-C blends were degradated in the thermobalance, at the temperature of 240, 250, 260 and 270°C in inert atmosphere. In the investigated temperature range, PVC dehydrochlorinates completely and PE-C partially. The kinetic parameters of isothermal degradation were calculated with the help of the Flynn and Prout-Tompkins equations. The apparent activation energy and preexponential factor show compensation dependence in a certain range of conversion, depending on blend composition.
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页码：179 / 185
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