pH Effect on Relaxation Spectra of Poly(methyl acrylate)-Poly(acrylonitrile) Copolymers by REM Model

被引：1

作者：

Kim, Nam Jeong ^{[1
]}

机构：

[1] Sahmyook Univ, Dept Chem, Seoul 139742, South Korea

来源：

POLYMER-KOREA | 2013年 / 37卷 / 02期

关键词：

poly(methyl acrylate)-poly(acrylonitrile) copolymers; relaxation spectra; REM model; tensile tester; distribution of molecular weights; self-diffusions; DYNAMIC-MECHANICAL DATA; DISCRETE RELAXATION; TIME SPECTRUM; REGULARIZATION METHOD; RETARDATION SPECTRA; POLYMERS;

D O I：

10.7317/pk.2013.37.2.135

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 stress relaxation of poly(methyl acrylate)-poly(acrylonitrile) copolymer samples was carried out in air, distilled water, pH 3, 7 and 11 solutions at various temperatures using a tensile tester equipped with a solvent chamber. The relaxation spectra of poly(methyl acrylate)-poly(aculonitrile) copolymers were obtained by applying the experimental stress relaxation curves to the equation of relaxation spectrum derived from the Ree-Eyring and Maxwell model. The determination of relaxation spectra was performed from computer calculation using a Laplace transform method. It was observed that the relaxation spectra of these samples are directly related to the distribution of molecular weights and self-diffusions of flow segments.

引用

页码：135 / 140

页数：6

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