Preparation of graphene/poly(vinyl alcohol) nanocomposites with enhanced mechanical properties and water resistance

被引：270

作者：

Wang, Jingchao ^{[2
]}

Wang, Xianbao ^{[1
,2
]}

Xu, Chunhui ^{[2
]}

Zhang, Min ^{[2
]}

Shang, Xiaopeng ^{[2
]}

机构：

[1] Hubei Univ, Fac Mat Sci & Engn, Wuhan 430062, Peoples R China

[2] Hubei Univ, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China

来源：

POLYMER INTERNATIONAL | 2011年 / 60卷 / 05期

基金：

中国国家自然科学基金;

关键词：

graphene; PVA; nanocomposites; mechanical properties; barrier properties; hydrophobic; CARBON NANOTUBES; GRAPHENE; COMPOSITES; STRENGTH; FILMS;

D O I：

10.1002/pi.3025

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The control and dispersal of graphene nanosheets in polymer hosts are challenges in the development of high-performance graphene-based nanocomposites due to the strong interlayer cohesive energy and surface inertia. Here we report a simple and practical approach to synthesize graphene-reinforced poly(vinyl alcohol) (PVA) composite films by incorporating graphene oxide and graphene into PVA aqueous solution. The resulting nanocomposites revealed increases of up to 212% in tensile strength and 34% in elongation at break with only 0.5 wt% graphene content. Water absorption measurements showed that the water absorption ratio of the graphene/PVA composites decreased from 105.2 to 48.8%, and the barrier properties were obviously improved. Contact angle measurements showed that the composites were hydrophobic (theta > 90 degrees) in contrast to the highly hydrophilic (theta < 90 degrees) pure PVA. (C) 2011 Society of Chemical Industry

引用

页码：816 / 822

页数：7

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