Next Article in Journal / Special Issue
Preparation of Multi-Walled Carbon Nanotube/Amino-Terminated Ionic Liquid Arrays and Their Electrocatalysis towards Oxygen Reduction
Previous Article in Journal
Current Strategies in Cardiovascular Biomaterial Functionalization
Previous Article in Special Issue
Semiconductor Nanocrystals Hybridized with Functional Ligands: New Composite Materials with Tunable Properties
Article Menu

Export Article

Open AccessArticle
Materials 2010, 3(1), 656-671;

Electrical and Electrorheological Properties of Alumina/Natural Rubber (STR XL) Composites

Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
Author to whom correspondence should be addressed.
Received: 18 December 2009 / Revised: 19 January 2010 / Accepted: 21 January 2010 / Published: 22 January 2010
(This article belongs to the Special Issue Composite Materials)
Full-Text   |   PDF [874 KB, uploaded 22 January 2010]   |  


The electrorheological properties (ER) of natural rubber (XL)/alumina (Al2O3) composites were investigated in oscillatory shear mode under DC electrical field strengths between 0 to 2 kV/mm. SEM micrographs indicate a mean particle size of 9.873 ± 0.034 µm and particles that are moderately dispersed in the matrix. The XRD patterns indicate Al2O3 is of the β-phase polytype which possesses high ionic conductivity. The storage modulus (G′) of the composites, or the rigidity, increases by nearly two orders of magnitude, with variations in particle volume fraction and electrical field strength. The increase in the storage modulus is caused the ionic polarization of the alumina particles and the induced dipole moments set up in the natural rubber matrix. View Full-Text
Keywords: natural rubber; dielectric elastomer; alumina natural rubber; dielectric elastomer; alumina

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Tangboriboon, N.; Uttanawanit, N.; Longtong, M.; Wongpinthong, P.; Sirivat, A.; Kunanuruksapong, R. Electrical and Electrorheological Properties of Alumina/Natural Rubber (STR XL) Composites. Materials 2010, 3, 656-671.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top