Structural changes in blends of linear polymers during their physical aging

被引：5

作者：

Babkina, N. V. ^{[1
]}

Kosyanchuk, L. F. ^{[1
]}

Todosiichuk, T. T. ^{[1
]}

Kozak, N. V. ^{[1
]}

Menzheres, G. Ya ^{[1
]}

Nesterenko, G. M. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Macromol Chem, UA-02160 Kiev, Ukraine

来源：

POLYMER SCIENCE SERIES A | 2012年 / 54卷 / 02期

关键词：

SEMI-CRYSTALLINE POLYMERS; LONG-TERM CREEP; POLY(METHYL METHACRYLATE); MECHANICAL-BEHAVIOR; SEMICRYSTALLINE POLYMERS; DYNAMIC VISCOELASTICITY; RELAXATION; TEMPERATURE; NETWORKS; TIME;

D O I：

10.1134/S0965545X12020010

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Structural transformations in the blends of linear polymers polyurethane and polystyrene during multistage physical aging are studied. Effects of the temperature and time of heat treatment and the rate of cooling after heat treatment on the dynamic mechanical properties of the blends are analyzed. Aging at T = 110A degrees C is accompanied by noticeable structural transformations in the polyurethane phase, while chemical changes are absent, as evidenced by thermogravimetric analysis and IR spectroscopy. Additional physical bonds and topological entanglements presumably form between chains in the blends of linear polymers during physical aging.

引用

页码：125 / 134

页数：10

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