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Proceedings Paper

EAP hydrogels for pulse-actuated cell system (PACS) architectures
Author(s): R. Erik Plata; Hallena R. Rogers; Mark Banister; Sonia Vohnout; Dominic V. McGrath
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Paper Abstract

Electroactuated polymer (EAP) hydrogels based on JEFFAMINE® T-403 and ethylene glycol glycidyl ether (EGDGE) are used in an infusion pump based on the proprietary Pulse Actuated Cell System (PACS) architecture in development at Medipacs LLC. We report here significant progress in optimizing the formulation of the EAP hydrogels to dramatically increase hydrolytic stability and reproducibility of actuation response. By adjusting the mole fraction of reactive components of the formulation and substituting higher molecular weight monomers, we eliminated a large degree of the hydrolytic instability of the hydrogels, decreased the brittleness of the gel, and increased the equilibrium swelling ratio. The combination of these two modifications to the formulation resulted in hydrogels that exhibited reproducible swelling and deswelling in response to pH for a total period of 10-15 hours.

Paper Details

Date Published: 5 April 2007
PDF: 8 pages
Proc. SPIE 6524, Electroactive Polymer Actuators and Devices (EAPAD) 2007, 65241T (5 April 2007); doi: 10.1117/12.716107
Show Author Affiliations
R. Erik Plata, Univ. of Arizona (United States)
Hallena R. Rogers, Univ. of Arizona (United States)
Mark Banister, Medipacs LLC (United States)
Sonia Vohnout, Medipacs LLC (United States)
Dominic V. McGrath, Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 6524:
Electroactive Polymer Actuators and Devices (EAPAD) 2007
Yoseph Bar-Cohen, Editor(s)

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