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Open AccessArticle

Core-Shell-Structured Copolyaniline-Coated Polymeric Nanoparticle Suspension and Its Viscoelastic Response under Various Electric Fields

Department of Polymer Science and Engineering, Inha University, Incheon 402-751, Korea
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Academic Editor: Luciano Feo
Materials 2015, 8(8), 4932-4942; https://doi.org/10.3390/ma8084932
Received: 1 June 2015 / Revised: 1 June 2015 / Accepted: 24 July 2015 / Published: 3 August 2015
(This article belongs to the Section Advanced Composites)
Semi-conducting poly(n-methylaniline) (PNMA)-coated poly(methyl methacrylate) (PMMA) composite nanoparticles were synthesized using cross-linked and grafted PMMA particles as a core, and then, the PNMA shell was coated via chemical oxidative polymerization on the surface of modified PMMA nanoparticles. Their electroresponsive electrorheological characteristics when dispersed in silicone were confirmed under applied electric fields using a rotational rheometer, focusing on their viscoelastic response. Using a frequency sweep test, the frequency dependence of both the storage and loss moduli was confirmed to increase upon increasing the electric field, with a stable plateau regime over the entire angular frequency range. View Full-Text
Keywords: electrorheological; core-shell; viscoelasticity; poly(methyl methacrylate); copolyaniline electrorheological; core-shell; viscoelasticity; poly(methyl methacrylate); copolyaniline
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Moon, I.-J.; Choi, H.J. Core-Shell-Structured Copolyaniline-Coated Polymeric Nanoparticle Suspension and Its Viscoelastic Response under Various Electric Fields. Materials 2015, 8, 4932-4942.

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