High-Strength Multifunctional Conducting Polymer Hydrogels

Abstract:

A simple and versatile method has been invented to fabricate conducting polymer hydrogels via supramolecular self-assembly between polymers and multivalent cations. As-prepared hydrogels composed of poly(3,4-ethylenedioxythiophene) and poly(styrenesulfonate) (PEDOT-PSS) exhibit expanded-coil conformation in polymer chains, phase-separate at nanometer scale, possess controllable microstructure, and is responsive to external stimulus. The conducting PEDOT-PSS hydrogels have then been introduced into multiple-network hydrogels to obtain composite hydrogels combining enhanced mechanical strength and excellent electrical activity. Triple-network (TN) and special double-network (sDN) hydrogels, containing poly(acrylic acid) (PAA) and poly(acrylamide) (PAAm) as the matrix respectively, are successfully prepared. Finally, PEDOT-PSS hydrogels with self-strengthening function are directly fabricated via a one-step process under optimized conditions. The strengthening mechanisms for each kind of hydrogels are proposed, and the applicability in electrosensors, supercapacitors and electromechanical actuators are briefly demonstrated.

• Periodical: Advanced Materials Research (Volumes 123-125)
• Pages: 117-120
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.123-125.117
• Online since: August 2010
• Authors: Ting Yang Dai, Xu Tang Qing, Chen Shen, Jing Wang, Yun Lu
• Keywords: Conducting Polymer, Electrical Activity, Flexible Electronics, Hydrogel, Mechanical Property, Soft Machines

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