NDLI: Nanostructured Triblock Copolymer Network With Tailorable Electroactive Response

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Arjun, S. Krishnan Shankar, Ravi Tushar, K. Ghosh Richard, J. Spontak
Copyright Year	2008
Abstract	In recent years, the use of electroactive polymers (EAPs), which are polymeric materials that respond to an external electrical stimulus by changing shape or size, has been the focus of considerable research effort. While most studies have considered chemically cross-linked homopolymers, only a few reports have addressed the use of physically cross-linked triblock copolymer systems. We have previously demonstrated that triblock copolymer networks swollen by a midblock-selective, nonvolatile solvent constitute excellent candidates as dielectric elastomers, one class of EAP materials. Due to the presence of a molecularly self-organized nanostructure in such materials, this EAP genre is generally referred to as electro-active nanostructured polymers (ENPs). These systems not only exhibit high actuation strains (>200%), but are also amenable to facile processing and recycling. In this study, we examine the electromechanical response of symmetric triblock copolymers possessing styrenic endblocks and a rubbery midblock selectively solvated with an aliphatic mineral oil. Our findings show that the specimen thickness has a significant effect on the electroactive response of the system. Moreover, we are able to correlate the electromechanical properties of ENPs with their mechanical properties.
Sponsorship	Aerospace Division
Starting Page	473
Ending Page	480
Page Count	8
File Format	PDF
ISBN	9780791843314
DOI	10.1115/SMASIS2008-529
e-ISBN	9780791838396
Volume Number	Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1
Conference Proceedings	ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
Language	English
Publisher Date	2008-10-28
Publisher Place	Ellicott City, Maryland, USA
Access Restriction	Subscribed
Subject Keyword	Conducting polymers Copolymers Elastomers Mechanical properties Mineral oil Recycling Shapes Polymers
Content Type	Text
Resource Type	Article

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