Promoting dispersion of graphene nanoplatelets in polyethylene and chlorinated polyethylene by Friedel-Crafts reaction

被引：17

作者：

Guo, Zhenghong ^{[1
]}

Ran, Shiya ^{[1
]}

Fang, Zhengping ^{[1
]}

机构：

[1] Zhejiang Univ, Ningbo Inst Technol, Lab Polymer Mat & Engn, Ningbo 315100, Zhejiang, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2013年 / 86卷

基金：

中国国家自然科学基金;

关键词：

Polymer-matrix composites (PMCs); Interface; Transmission electron microscopy (TEM); Friedel-Crafts reaction; IN-SITU COMPATIBILIZATION; DEGRADATION; BLENDS;

D O I：

10.1016/j.compscitech.2013.07.015

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Graphene nanoplatelets (GNPs) are the stacks of multi-layered graphene sheets which can be incorporated with different polymers in order to gain outstanding performance in mechanical, thermal, electrical, optical and barrier properties. However, the strong van der Waals interactions between graphene sheets make GNPs tend to agglomerate in polymer matrix, resulting in the concentration of stresses. In this paper, GNPs were compounded with high density polyethylene (HDPE) and chlorinated polyethylene (CPE) in the presence of a Lewis acid catalyst (AICI(3)). The macrocarbocations in polymer chains, initiated by Friedel-Crafts reaction, formed strong interaction with delocalized conjugated pi electrons of graphene sheets, which benefited to unfolding the aggregations of GNPs and improving its dispersion in the composites. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：157 / 163

页数：7

共 21 条

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