NDLI: Design and preparation of bio-based dielectric elastomer with polar and plasticized side chains

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Liqun Qiao, He Wang, Wencai Yang, Dan Zhou, Xinxin Lei, Weiwei Wang, Runguo Tian, Ming Hou, Guanyi
Copyright Year	2015
Abstract	A new dielectric elastomer with large actuated strain driven by low electric field was synthesized from di-n-butyl itaconate and isoprene through free radical redox emulsion polymerization. The effect of the copolymerized proportion of poly(di-n-butyl itaconate-co-isoprene) (PDBII) and the dosage of crosslinking agent on the elastic modulus, dielectric properties, and actuated strain of the elastomer were investigated, and a potential dielectric elastomer candidate containing 70 wt% di-n-butyl itaconate was obtained. The permittivity of the PDBII crosslinked by 3.0 phr of dicumyl peroxide was 5.68 at 103 Hz, which was higher than that of commercial acrylic and silicone dielectric elastomers. Without any prestrain, an actuated strain of 20% was obtained at an electric field of 30 kV mm−1. In order to further increase the actuated strain, barium titanate (BaTiO3), a high-dielectric-constant ceramic powder, was utilized to fill the PDBII to form a BaTiO3/PDBII composite. The dielectric constant of the composite increased with increasing content of BaTiO3, and the elastic modulus of the composite was lower than that of the unfilled PDBII, leading to a larger dielectric actuated strain of the composite.
Starting Page	47429
Ending Page	47438
Page Count	10
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	5
Issue Number	59
Journal	RSC Advances
DOI	10.1039/c5ra06576c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Elastic modulus Barium titanate Relative permittivity Elastomer Silicone Redox Dielectric elastomers Dielectric Electric field Emulsion polymerization Peroxide Free-radical halogenation Isoprene
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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