Morphology and properties of waterborne polyurethane/clay nanocomposites

被引：236

作者：

Kim, BK

Seo, JW

Jeong, HM ^{[1
]}

机构：

[1] Univ Ulsan, Dept Chem, Res Ctr Machine Parts & Mat Proc, Ulsan 680749, South Korea

[2] Pusan Natl Univ, Dept Polymer Sci & Engn, Pusan 609749, South Korea

来源：

EUROPEAN POLYMER JOURNAL | 2003年 / 39卷 / 01期

关键词：

waterborne polyurethane; organoclay; nanocomposite; morphology; mechanical properties; physical properties;

D O I：

10.1016/S0014-3057(02)00173-8

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Aqueous emulsion of polyurethane ionomers, based on poly(tetramethylene glycol) or poly(butylene adipate) as soft segment, isophorone diisocyanate as diisocyanate, 1,4-butandiol as chain extender, dimethyl propionic acid as potential ionic center, triethylene tetramine as crosslinker, and triethyl amine as neutralizer., were reinforced with organoclay to give nanocomposites. The particle size of emulsion was measured and the morphology of these nanocomposites was observed by transmission electron microscope, where the effectively intercalated or exfoliated organoclay was observed. The reinforcing effects of organoclay in mechanical properties of these nanocomposites were examined by dynamic mechanical and tensile tests, and the Shore A hardness was measured. Enhanced thermal and water resistance and marginal reduction in transparency of these nanocomposites were observed compared with pristine polymer. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：85 / 91

页数：7

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