Journal ArticleDOI
Molecular-Level Dispersion of Graphene into Poly(vinyl alcohol) and Effective Reinforcement of their Nanocomposites
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TLDR
In this paper, the preparation of polyvinyl alcohol (PVA) nanocomposites with graphene oxide (GO) using a simple water solution processing method is reported, and efficient load transfer is found between the nanofiller graphene and matrix PVA and the mechanical properties of the graphene-based nanocompositionite with molecule-level dispersion are significantly improved.Abstract:
Despite great recent progress with carbon nanotubes and other nanoscale fillers, the development of strong, durable, and cost-efficient multifunctional nanocomposite materials has yet to be achieved. The challenges are to achieve molecule-level dispersion and maximum interfacial interaction between the nanofiller and the matrix at low loading. Here, the preparation of poly(vinyl alcohol) (PVA) nanocomposites with graphene oxide (GO) using a simple water solution processing method is reported. Efficient load transfer is found between the nanofiller graphene and matrix PVA and the mechanical properties of the graphene-based nanocomposite with molecule-level dispersion are significantly improved. A 76% increase in tensile strength and a 62% improvement of Young's modulus are achieved by addition of only 0.7 wt% of GO. The experimentally determined Young's modulus is in excellent agreement with theoretical simulation.read more
Citations
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Harnessing the chemistry of graphene oxide
TL;DR: An overview of some of the most recent and significant developments in the field of graphene oxide, and an outlook of potential areas where GO, its derivatives, and related materials may be expected to find utility or opportunity for further growth and study.
Journal ArticleDOI
Well-Dispersed Chitosan/Graphene Oxide Nanocomposites
TL;DR: The experimental results indicate that graphene oxide sheets prefer to disperse well within the nanocomposites, compared with the pure chitosan, the tensile strength, and Young's modulus of the graphene-based materials are significantly improved.
Journal ArticleDOI
Grafting of epoxy chains onto graphene oxide for epoxy composites with improved mechanical and thermal properties
Yan Jun Wan,Long-Cheng Tang,Li Xiu Gong,Dong Yan,Yi Bao Li,Lian Bin Wu,Jian Xiong Jiang,Guo Qiao Lai +7 more
TL;DR: In this paper, the surface functionalization of DGEBA layer was found to effectively improve the compatibility and dispersion of GO sheets in epoxy matrix, and increased glass transition temperature and thermal stability was also observed in the dynamic mechanical properties and thermo-gravimetric analysis.
Journal ArticleDOI
Porous 3D graphene-based bulk materials with exceptional high surface area and excellent conductivity for supercapacitors.
Long Zhang,Fan Zhang,Xi Yang,Guankui Long,Yingpeng Wu,Tengfei Zhang,Kai Leng,Yi Huang,Yanfeng Ma,Ao Yu,Yongsheng Chen +10 more
TL;DR: In this paper, the authors presented a simple and green but very efficient approach using two standard and simple industry steps to make such three-dimensional graphene-based porous materials at the bulk scale, with ultrahigh specific surface area (SSA) and electrical conductivity at bulk state.
Journal ArticleDOI
In situ Polymerization Approach to Graphene-Reinforced Nylon-6 Composites
TL;DR: In this article, the authors reported an efficient method to prepare nylon-6− (PA6−) graphene composites by in situ polymerization of caprolactam in the presence of graphene oxide (GO).
References
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Journal ArticleDOI
Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide
Sasha Stankovich,Dmitriy A. Dikin,Richard D. Piner,Kevin A. Kohlhaas,Alfred Kleinhammes,Yuanyuan Jia,Yue Wu,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
TL;DR: In this paper, a colloidal suspension of exfoliated graphene oxide sheets in water with hydrazine hydrate results in their aggregation and subsequent formation of a high surface area carbon material which consists of thin graphene-based sheets.
Journal ArticleDOI
Graphene-based composite materials
Sasha Stankovich,Dmitriy A. Dikin,Geoffrey Dommett,K. Kohlhaas,Eric Zimney,Eric A. Stach,Richard D. Piner,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
TL;DR: The bottom-up chemical approach of tuning the graphene sheet properties provides a path to a broad new class of graphene-based materials and their use in a variety of applications.
Journal ArticleDOI
Processable aqueous dispersions of graphene nanosheets
TL;DR: It is reported that chemically converted graphene sheets obtained from graphite can readily form stable aqueous colloids through electrostatic stabilization, making it possible to process graphene materials using low-cost solution processing techniques, opening up enormous opportunities to use this unique carbon nanostructure for many technological applications.