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Enhancement of electromechanical properties of natural rubber by adding barium titanate filler: An electro‐mechanical study

Ajeet Kumar, Dilshad Ahmad, Karali Patra, Mokarram Hossain Orcid Logo

Journal of Applied Polymer Science, Volume: 138, Issue: 39, Start page: 50991

Swansea University Author: Mokarram Hossain Orcid Logo

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DOI (Published version): 10.1002/app.50991

Abstract

Natural rubber is one of the most potential electro‐active polymers for sensors, actuators, and energy harvesting applications. Enhancing the characteristic properties of polymers by reinforcing with fillers that possess multifunctional attributes have attracted considerable attention. In the presen...

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Published in: Journal of Applied Polymer Science
ISSN: 0021-8995 1097-4628
Published: Wiley 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56870
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Abstract: Natural rubber is one of the most potential electro‐active polymers for sensors, actuators, and energy harvesting applications. Enhancing the characteristic properties of polymers by reinforcing with fillers that possess multifunctional attributes have attracted considerable attention. In the present study, barium titanate reinforced natural rubber composite is prepared by using two‐roll mill mixing. Afterwards, mechanical, electrical, and electromechanical properties of the composites are extensively analyzed by reinforcing different amounts of barium titanate into the matrix of natural rubber. The fabricated dielectric composite shows excellent properties such as high dielectric constant, low dielectric losses, high dielectric breakdown strength, and extreme stretchability. It is observed that as the filler loading reaches the value of 11 parts per hundred rubber (phr), maximum agglomeration of the particles occurs. Maximum stretchability and highest ratio of dielectric constant to elastic modulus are obtained at 8 phr of barium titanate fillers and at the loading, a maximum actuation strain of 11.24% is achieved. This study provides a simple, economical, and effective method for preparing enhanced mechanical, electrical, and electromechanical properties of natural rubber composites, facilitating the wide applications of dielectric materials as actuators and generators.
Keywords: Natural rubber; Barium titanate; Dielectric constant; Elastic modulus; Actuator; Generators
College: College of Engineering
Issue: 39
Start Page: 50991