NDLI: Dielectric elastomers with dual piezo-electrostatic response optimized through chemical design for electromechanical transducers

Content Provider	Royal Society of Chemistry (RSC)
Author	Varganici, C. D. Tiron, V. Tugui, C. Cazacu, M. Bele, A. Hamciuc, E.
Copyright Year	2017
Abstract	A new class of elastomers that simultaneously shows sensing, actuation and energy conversion functionalities is synthesized to meet the current requirements for electroactive materials. These new materials consist of a silicone network (polydimethylsiloxane-α,ω-diol crosslinked through chain ends) semi-interpenetrated with different percentages (2, 5, and 10 wt%) of polyimide derivatives stepwise modified by different strategies to improve the compatibility with the silicone core network. By addressing the right chemical pathway, the resulting semi-interpenetrated structures (S-IPNs) show noticeable dielectric permittivity, eps′ (up to 11), and breakdown strength, Ebd (up to 88 μm V−1), improvements as compared with the starting polymers (silicone with eps′ = 2.9 and Ebd = 38 μm V−1 and our best polyimide with eps′ = 6.2 and Ebd = 23 μm V−1). The S-IPNs with 10 wt% polyimide are able to gain energy up to 132 mJ cm−3 at 100% strain and up to 164 mJ cm−3 at maximum strain to develop large actuation strain (up to 8.7%) and show very good piezo-response (up to 44 pm V−1), making them highly suitable for cutting-edge electromechanical applications. For a better evaluation, S-IPNs are compared with one of the commercially available dielectric elastomers, most often used for this purpose.
Starting Page	824
Ending Page	834
Page Count	11
File Format	HTM / HTML PDF
ISSN	20507526
Volume Number	5
Issue Number	4
Journal	Journal of Materials Chemistry C
DOI	10.1039/c6tc05193f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Silicone Polyimide Dielectric Micrometre Dielectric elastomers
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in