Conductive hydrogel films produced by freestanding electrophoretic deposition and polymerization at the interface of immiscible liquids. (1st December 2017)

• Record Type: Journal Article
• Authors: Joung, Young Soo; Ramirez, Robert B.; Bailey, Eric; Adenekan, Rachel; Buie, Cullen R.
• Is Part Of: Composites science and technology. Volume 153(2017)
• Page Start: 128
• Page End: 135
• Publication Date: 2017-12-01
• Subjects: Conductive hydrogel -- Electrophoretic deposition -- Interfacial EPD -- Carbon nanotube -- Freestanding polymerization; EPD Electrophoretic Deposition -- CNTs carbon nanotubes -- PDMS Polydimethylsiloxane -- MCNTs multi-walled carbon nanotubes -- DLS dynamic light scattering -- SDS Sodium Dodecyl Sulfate -- SEM scanning electron microscopy -- PEDOT:PSS poly(3, 4-ethylenedioxythiophene) polystyrene sulfonate; Composite materials -- Periodicals; Composite materials; Fibrous composites; Periodicals; 620.118
• DOI: 10.1016/j.compscitech.2017.10.018
• Languages: English
• ISSNs: 0266-3538

Abstract

Abstract: Conductive hydrogels are promising materials for energy and biomedical applications due to their bio-compatibility, high porosity, and outstanding swelling-capability. In this work we present a unique method to fabricate nanomaterial-hydrogel composite films using Electrophoretic Deposition (EPD) at the interface of two immiscible liquids. During interfacial EPD, nanoparticles such as carbon nanotubes (CNTs) electro-migrate to an oil/water interface, where polymer cross-linking is induced to form composite hydrogel films. The key aspect of this method is that polymerization occurs away from a solid substrate while surrounded by both water and oil, allowing for the integration of CNTs into the hydrogel. Properties of the composite hydrogel films are controlled by EPD parameters and polymerization conditions, facilitating the potential for mass production without complex machinery. This fabrication method is cost-effective and scalable for composite hydrogels with tunable electrical, mechanical, and biological properties. Potential applications include fabrication of doped hydrogels for drug delivery and biological sensors.