STRUCTURE AND ORIENTATIONAL BEHAVIOR OF POLYURETHANE CONTAINING POLYDIMETHYLSILOXANE

被引：30

作者：

SHIBAYAMA, M ^{[1
]}

INOUE, M ^{[1
]}

YAMAMOTO, T ^{[1
]}

NOMURA, S ^{[1
]}

机构：

[1] KYOTO INST TECHNOL,DEPT POLYMER SCI & ENGN,MATSUGASAKI,KYOTO 606,JAPAN

来源：

POLYMER | 1990年 / 31卷 / 04期

关键词：

infrared dichroism; orientation; polydimethylsiloxane; polyurethane; spherulite;

D O I：

10.1016/0032-3861(90)90299-E

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 structure and orientational behaviour of polyurethanes containing polydimethylsiloxane in the main chain was investigated by means of infrared dichroism, small angle light scattering and differential scanning calorimetry. It was found that the introduction of polydimethylsiloxane in the main chain reduced the crystallization capability of the soft segments. Hard and soft segments are oriented positively on uniaxial stretching. The orientational behaviour of the hard segments is different from that for most segmented polyurethanes and poly(urethaneurea)s, in which hard segments show negative orientation at low elongation. The difference in orientational behaviour is discussed in terms of the capability of self-cohesion of hard segments. © 1990.

引用

页码：749 / 757

页数：9

共 18 条

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