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

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 pol...

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Bibliographic Details
Published in:Polymer international 2011-05, Vol.60 (5), p.816-822
Main Authors: Wang, Jingchao, Wang, Xianbao, Xu, Chunhui, Zhang, Min, Shang, Xiaopeng
Format: Article
Language:English
Subjects:
Alcohols
Applied sciences
barrier properties
Composites
Contact angle
Exact sciences and technology
Forms of application and semi-finished materials
Graphene
hydrophobic
mechanical properties
Nanocomposites
Nanomaterials
Nanostructure
Polymer industry, paints, wood
Polyvinyl alcohols
PVA
Technology of polymers
Water absorption
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Summary: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 (θ > 90°) in contrast to the highly hydrophilic (θ < 90°) pure PVA. Copyright © 2011 Society of Chemical Industry Graphene/poly(vinyl alcohol) composites with enhanced mechanical properties and water resistance were prepared by incorporating graphene oxide into poly(vinyl alcohol) aqueous solution with subsequent reduction of graphene oxide to graphene sheets.
ISSN:0959-8103
1097-0126
1097-0126
DOI:10.1002/pi.3025