Thermal degradation of poly(vinyl chloride)/poly(ethylene oxide) blends: Thermogravimetric analysis

被引：38
|
作者：
Jakic, Mice [1 ]
Vrandecic, Natasa Stipanelov [1 ]
Klaric, Ivka [1 ]
机构：
[1] Univ Split, Fac Chem & Technol, Dept Organ Technol, HR-21000 Split, Croatia
来源：
POLYMER DEGRADATION AND STABILITY | 2013年 / 98卷 / 09期
关键词：
Activation energy; Poly(ethylene oxide); Poly(vinyl chloride); Polymer blends; Thermal degradation; Thermogravimetric analysis; POLY(ETHYLENE OXIDE); DECOMPOSITION KINETICS; POLYETHYLENE OXIDE; POLYMER ELECTROLYTES; SOLID-STATE; MISCIBILITY; CHLORIDE); CRYSTALLIZATION; STABILITY; MODEL;
D O I：
10.1016/j.polymdegradstab.2013.05.024
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Thermal stability of poly(vinyl chloride)/poly(ethylene oxide) (PVC/PEO) blends has been investigated by thermogravimetric analysis (TGA) in dynamic and isothermal heating regime. PVC/PEO blends were prepared by hot-melt extrusion (HME). According to TG analysis, PEO decomposes in one stage, while PVC and PVC/PEO blends in two degradation stages. In order to evaluate the effect of PEO content on the thermal stability of PVC/PEO blends, different criteria were used. It was found that thermal stability of PVC/PEO blends depends on the blend composition. The interactions of blends components with their degradation products were confirmed. By using multiple heating rate kinetics the activation energies of the PVC/PEO blends thermal degradation were calculated by isoconversional integral Flynn-Wall-Ozawa and differential Friedman method. According to dependence of activation energy on degree of conversion the complexity of degradation processes was determined. (C) 2013 Elsevier Ltd. All rights reserved.
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收藏
页码：1738 / 1743
页数：6
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