Improvement of mechanical properties of graphene oxide/poly(allylamine) composites by chemical crosslinking

被引：138

作者：

Satti, Amro ^{[1
]}

Larpent, Patrick

Gun'ko, Yurii

机构：

[1] Univ Dublin Trinity Coll, Sch Chem, Dublin 2, Ireland

来源：

CARBON | 2010年 / 48卷 / 12期

基金：

爱尔兰科学基金会;

关键词：

GRAPHITE OXIDE; REDUCTION; EXFOLIATION; STRENGTH; SHEETS; FILMS;

D O I：

10.1016/j.carbon.2010.05.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Graphite oxide was prepared by oxidation of graphite using the Hummers method, and its ultrasonication in water yielded dispersed graphene oxide (GO) sheets. These sheets were then crosslinked with a water soluble polymer, namely poly (allylamine) hydrochloride (PAH), by carbodiimide coupling. Free standing composite films were obtained by filtration. These crosslinked composites showed better mechanical properties than unmodified GO films and those of composites that were made by simple mixing of GO and PAH. The filtration process was optimized to produce strong GO films which were subsequently crosslinked with PAH in-situ to produce very strong composites with tensile strengths up to 146 MPa. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3376 / 3381

页数：6

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