Phenyl urea derivatives as organic stabilizers for rigid poly(vinyl chloride) against photo-degradation

被引：9

作者：

Sabaa, Magdy W. ^{[1
]}

Mohamed, Riham R. ^{[1
]}

机构：

[1] Cairo Univ, Fac Sci, Dept Chem, Giza, Egypt

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2007年 / 103卷 / 04期

基金：

美国国家航空航天局;

关键词：

poly(vinyl chloride); UV absorbers; phenyl urea derivatives; intrinsic viscosity; gel content; weight loss; SEM;

D O I：

10.1002/app.25205

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Phenyl urea derivatives have been prepared and investigated as photostabilizers for rigid PVC by measuring the extent of weight loss (%), the amount of gel formation as well as the intrinsic viscosity of the soluble fractions of the degraded polymer. Moreover, the efficiency of these stabilizers was evaluated from the extent of discoloration of the degraded polymer in their presence. The results indicated a reasonable stabilizing effect of these derivatives when compared with the commercially used UV stabilizers: phenyl salicylate (Salol) and methanone, 2-hydroxy-4-(octyloxy)-phenyl-benzophenone. A synergistic effect is achieved when the phenyl urea derivatives are mixed with the UV absorbers in the ratio (75 : 25%), respectively. A radical mechanism is proposed to account for the stabilizing action of the products investigated. (c) 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2217-2226, 2007

引用

页码：2217 / 2226

页数：10

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