Issue 29, 2013
From the journal:

RSC Advances

Core–shell structured graphene oxide-adsorbed anisotropic poly(methyl methacrylate) microparticles and their electrorheology†

Wen Ling Zhang,a   Ying Dan Liu,a   Hyoung Jin Choi*a  and  Yongsok Seob  

* Corresponding authors

a Department of Polymer Science and Engineering, Inha University, Incheon, Korea
E-mail: hjchoi@inha.ac.kr
Fax: 82-32-865-5178
Tel: 82-32-860-8777

b Intellectual Textile System Research Center (ITRC) and School of Materials Science and Engineering, Seoul National University, Seoul, Korea 151-744

Abstract

This paper reports the facile preparation of graphene oxide (GO)-adsorbed snowman-like anisotropic poly(methyl methacrylate) (SPMMA) microspheres along with their electro-responsive electrorheological (ER) performance when dispersed in silicone oil. GO was prepared using a modified Hummers method, whereas monodispersed SPMMA particles were fabricated using a seed emulsion polymerization procedure. GO was adsorbed on the surface of the SPMMA particles with the aid of a cationic surfactant cetyl trimethylammonium bromide through a negative–positive electrostatic attraction. The surface morphology, chemical components, thermal stability and electrical conductivity of the obtained core–shell structured GO–SPMMA particles were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis and resistivity meter, respectively. The ER characteristics of the obtained particles were examined using an optical microscope and a rotational rheometer. This novel ER fluid exhibited typical ER properties of solid-like behavior under an applied electric field.

Graphical abstract: Core–shell structured graphene oxide-adsorbed anisotropic poly(methyl methacrylate) microparticles and their electrorheology

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Article information

DOI
https://doi.org/10.1039/C3RA22411B
Article type
Paper
Submitted
05 Oct 2012
Accepted
10 May 2013
First published
13 May 2013

RSC Adv., 2013,3, 11723-11731

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Core–shell structured graphene oxide-adsorbed anisotropic poly(methyl methacrylate) microparticles and their electrorheology

W. L. Zhang, Y. D. Liu, H. J. Choi and Y. Seo, RSC Adv., 2013, 3, 11723 DOI: 10.1039/C3RA22411B

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