Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/344704
Type: Artigo
Title: High toughness in ultralow density graphene oxide foam
Author: Owuor, P. S.
Woellner, C. F.
Li, T.
Vinod, S.
Ozden, S.
Kosolwattana, S.
Bhowmick, S.
Duy, L. X.
Salvatierra, R. V.
Wei, B. Q.
Asif, S. A. S.
Tour, J. M.
Vajtai, R.
Lou, J.
Galvão, D. S.
Tiwary, C. S.
Ajayan, P. M.
Abstract: Here, the scalable synthesis of low-density 3D macroscopic structure of graphene oxide (GO) interconnected with polydimethylsiloxane (PDMS) is reported. A controlled amount of PDMS is infused into the freeze-dried foam to result into a very rigid structure with improved mechanical properties, such as tensile plasticity and toughness. The PDMS wets the graphene oxide sheets and acts like glue between the 2D sheets. Molecular dynamics simulations are used to further elucidate the mechanisms of the interactions of graphene oxide layers with PDMS. The ability of using the interconnecting graphene oxide foam as an effective oil-water separator and stable insulating behavior to elevated temperatures are further demonstrated. The structural rigidity of the sample is also tested using laser impact and compared with GO foam.
Subject: Óxido de grafeno
Interfaces (Ciências físicas)
Dinâmica molecular - Métodos de simulação
Microscopia
Dureza
Graphene oxide
Interfaces (Physical sciences)
Molecular dynamics - Simulation methods
Microscopy
Hardness
Country: Alemanha
Editor: Wiley-VCH Verlag
Rights: fechado
Identifier DOI: 10.1002/admi.201700030
Address: https://onlinelibrary.wiley.com/doi/full/10.1002/admi.201700030
Date Issue: 2017
Appears in Collections:IFGW - Artigos e Outros Documentos

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