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A study on a polyurethane-based blend with enhanced electromechanical properties

QIN LIU1,* , DANIEL GUYOMAR1, LAURENCE SEVEYRAT1, BENOIT GUIFFARD2

Affiliation

  1. 2(current address) IIETR UMR CNRS 6164, Université de Nantes, 2 rue de la Houssinière, BP 92208, F-44322 Nantes cedex 3, France
  2. Laboratoire de Génie Electrique et Ferroélectricité, LGEF EA682 INSA Lyon, Bat. Gustave Ferrié, 8 rue de la Physique, F-69621 Villeurbanne Cedex, France

Abstract

Polyurethane elastomer is one of the electroactive polymers which show the ability to convert mechanical energy into electrical energy and inversely. Some approaches have been exploited to improve its properties, like random composites, interpenetration or blend system. The last approach, blend system can retain unexpected properties of existing polymers. In this work, a polyurethane-based polymer blend with a soft poly (ethylene-co-methyl acrylate-co-glycidyl methacrylate) (PEMG) by a simple solution method was studied to enhance the electromechanical properties. The resulting blend films exhibited both a little decrease of the dielectric constant and the elastic modulus. They present also an improvement of the strain under moderate electric fields with relatively low percentages of PEMG. For example at 10 kV/mm, a twofold increase of the strain is observed with only 9%wt of PEMG. Furthermore, DSC measurement was conducted to verify to verify the compatibility between the two polymers..

Keywords

Electroactive polymers, Polymer blend, Dielectric elastomer, Electrostriction effect.

Submitted at: April 17, 2013
Accepted at: June 12, 2013

Citation

QIN LIU, DANIEL GUYOMAR, LAURENCE SEVEYRAT, BENOIT GUIFFARD, A study on a polyurethane-based blend with enhanced electromechanical properties, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 5-6, pp. 475-480 (2013)