Influence of processing conditions on the multiphase structure of segmented polyurethane

被引：75

作者：

Pompe, G ^{[1
]}

Pohlers, A ^{[1
]}

Potschke, P ^{[1
]}

Pionteck, J ^{[1
]}

机构：

[1] Polymer Res Inst, Dresden, Germany

来源：

POLYMER | 1998年 / 39卷 / 21期

关键词：

polyurethane; processing conditions; polymorphism of hard segment crystallites;

D O I：

10.1016/S0032-3861(97)10350-0

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 multiphase structure of thermoplastic polyurethane elastomers is not only influenced by the chemical structure, but also by the processing conditions. The polymorphism of hard segment (HS) crystallites of a commercial polyurethane was investigated in dependence on the melt processing conditions using WAXS and d.s.c. The observed crystalline morphology types are strongly influenced by the processing temperature. Analysis of the results permits the assignment of HS crystallites of so-called 'type II' with high WAXS intensity to those melting above 220 degrees C. Additionally, the tensile strength was determined. These results related to the d.s.c. data allow to establish a processing-structure-property elation. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：5147 / 5153

页数：7

共 18 条

[1] HARD-SEGMENT POLYMORPHISM IN MDI DIOL-BASED POLYURETHANE ELASTOMERS [J].