Synthesis and properties of self-crosslinkable polyurethane-urea with silsesquioxane formation

被引：14

作者：

Zhang, T

Xi, K

Chen, H

Yu, XH ^{[1
]}

机构：

[1] Nanjing Univ, Coll Life Sci, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Dept Polymer Sci & Engn, Nanjing 210093, Peoples R China

[3] Nanjing Univ, Solid State Microstruct Lab, Nanjing 210093, Peoples R China

[4] McMaster Univ, Dept Chem Engn, Hamilton, ON L8S 4L7, Canada

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2004年 / 91卷 / 01期

关键词：

crosslinking; polyurethanes; silsesquioxane; mechanical properties; synthesis;

D O I：

10.1002/app.13212

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Based on the typical two-step polyurethaneurea synthesis, a new series of self-crosslinkable polyurethane (PU)-urea formulations, consisting of poly(tetramethylene oxide) and 4,4'-diphenyl methane diisocyanate, and extended by ethylenediamine (EDA)/aminoethylaminopropyltrimethyoxysilane (AEAPS), were prepared. FTIR, ESCA, WAXD, DSC, and mechanical properties of samples were recorded. The results show that the self-crosslinkable polyurethane-urea could be crosslinked by hydrolysis of the trimethyloxysiloxane group to form the silsesquioxane structure. These structures represent a kind of nanosize, cagelike, chemical crosslink site as well as filler, which affect the properties of PU. The morphology, varied with different ratios of EDA/AEAPS, was also discussed. (C) 2003 Wiley Periodicals, Inc.

引用

页码：190 / 195

页数：6

共 11 条

[1] SILSESQUIOXANES [J].