Properties of Waterborne Polyurethane/Functionalized Graphene Sheet Nanocomposites Prepared by an in situ Method

被引：224
|
作者：
Lee, Yu Rok [1 ]
Raghu, Anjanapura V. [1 ]
Jeong, Han Mo [1 ]
Kim, Byung Kyu [2 ]
机构：
[1] Univ Ulsan, Dept Chem, Ulsan 680749, South Korea
[2] Pusan Natl Univ, Dept Polymer Sci & Engn, Pusan 609735, South Korea
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2009年 / 210卷 / 15期
关键词：
graphene; in situ method; mechanical properties; nanocomposites; polyurethanes; CARBON-NANOTUBE; FUNCTIONALIZED GRAPHENE; GRAPHITE OXIDES; POLYURETHANE; POLYMERIZATION; COMPOSITES; MORPHOLOGY; PHASE; SERIES;
D O I：
10.1002/macp.200900157
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Nanocomposites of waterborne polyurethane (WPU) with functionalized graphene sheets (FGS) were prepared by an in situ method. The morphology observed by transmission electron microscopy showed that pristine nanosize FGS can be finely dispersed in a WPU matrix so that it can efficiently improve the conductivity of WPU. The modulus improvement by the reinforcing effect of FGS was more evident than our previous results of nanocomposites prepared by a physical mixing method, showing that the interactions between FGS and WPU were improved when made by the in situ method. In addition, the FGS enhanced the crystallization of the soft segment of WPU evidently; however, it reduced that of the hard segment. The thermal degradation of WPU was accelerated by FGS.
引用
收藏
页码：1247 / 1254
页数：8
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