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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Polyethylene nano crystalsomes formed at a curved liquid/liquid interface.
Wenda Wang,Mark C. Staub,Tian Zhou,Derrick M. Smith,Hao Qi,Eric D. Laird,Shan Cheng,Christopher Y. Li +7 more
TL;DR: It is shown that the formation of the nanosized PE crystalsomes is driven by controlled crystallization at the curved liquid/liquid interface of the miniemulson droplet, which represents a new type of nanostructure that might be used as nanodrug carriers and ultrasound contrast agents.
Journal ArticleDOI
Preparation and properties of styrene‐butadiene rubber nanocomposites blended with carbon black‐graphene hybrid filler
TL;DR: In this paper, a carbon black-reduced graphene (CB-RG) hybrid filler was fabricated and blended with styrene-butadiene rubber (SBR) via simple two-roll mill mixing.
Journal ArticleDOI
Isothermal crystallization kinetics and subsequent melting behavior of β‐nucleated isotactic polypropylene/graphene oxide composites with different ordered structure
Journal ArticleDOI
Graphene oxide induced hydrolytic degradation behavior changes of poly(l-lactide) in different mediums
TL;DR: In this article, the effect of GO on the degradation behavior of poly( l -lactide) composites was investigated in three different mediums, including alkaline solution with a pH value of 12, acidic solution with pH values of 2 and deionized water with pH value 7.
Journal ArticleDOI
Composite electrospun nanofibers of reduced graphene oxide grafted with poly(3-dodecylthiophene) and poly(3-thiophene ethanol) and blended with polycaprolactone.
Raana Sarvari,Somaye Sattari,Bakhshali Massoumi,Samira Agbolaghi,Younes Beygi-Khosrowshahi,Amir Kahaie-Khosrowshahi +5 more
TL;DR: The soluble conducting composites developed in this study are utilizable in the fabrication of nanofibers with tissue engineering application and exhibited a good electroactivity behavior, mainly because of the enhanced electrochemical performance.
References
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Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
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Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
TL;DR: Graphene is established as the strongest material ever measured, and atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.
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.