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Stabilization of PVC by epoxidized sunflower oil in the presence of zinc and calcium stearates

被引：106
作者：
Benaniba, MT
Belhaneche-Bensemra, N
Gelbard, G
机构：
[1] Ecole Natl Polytech, Dept Genie Environm, Algiers, Algeria
[2] Univ Setif, Inst Chim Ind, Dept Genie Polymers, Setif, Algeria
[3] Inst Rech Catalyse, F-69626 Villeurbanne, France
来源：
POLYMER DEGRADATION AND STABILITY | 2003年 / 82卷 / 02期
关键词：
D O I：
10.1016/S0141-3910(03)00178-2
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Sunflower oil was epoxidized and characterized. Epoxidized sunflower oil (ESO) was used as an organic thermal co-stabilizer for plasticized polyvinyl chloride (PVC) in the presence of Zn and Ca stearates. The thermo-oxidative degradation of PVC was studied in the presence of this ternary stabilizer system at 170 degreesC. The rates of dehydrochlorination were measured by potentiometric titration and the extents of discoloration were evaluated. The formation of polyene sequences was investigated by UV-visible spectroscopy. The influence of the ratio of Zn and Ca stearates (1/2, 1/1 and 2/1) and of the amount of oxirane oxygen in the HTE were considered. Synergistic effects were found. (C) 2003 Elsevier Ltd. All rights reserved.
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页码：245 / 249
页数：5
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