Three-dimensional, high-porosity conducting skeletal structure from biodegradable microparticles with vapor-phase polymerized conformal surface layer
- Authors
- Kim, Sang Woo; Lee, Sang Woo; Kim, Jihoon; Yim, Jin-Heong; Cho, Kuk Young
- Issue Date
- Oct-2016
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Conformal coating; Conducting porous structure; Vapor-phase polymerization
- Citation
- POLYMER, v.102, pp.127 - 135
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMER
- Volume
- 102
- Start Page
- 127
- End Page
- 135
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/12605
- DOI
- 10.1016/j.polymer.2016.09.008
- ISSN
- 0032-3861
- Abstract
- Three dimensional (3D) electric conducting porous structures are a promising platform that could be utilized in emerging 3D structural electronics, energy storage systems, and biomedical applications. A poly(3,4-ethylenedioxythiophene)/silica (PEDOT/SiO2) composite with foam-like conducting open skeletal structures and pore sizes exceeding 100 mm is presented. A two-step procedure was used to prepare this functional porous structure. First, a conformal coating layer was synthesized via vapor-phase polymerization onto a randomly sized biodegradable microparticle assembly. Vapor-phase polymerization allowed for facile coating of the nanoscale layer in a relatively short processing time (30 min). At this stage, non-invasive chemical modification can be also accomplished on the surface of microparticles that have complex surface morphology. Secondly, biodegradable microparticles were selectively removed to form a high-porosity skeletal conducting structure. The composite demonstrated structural integrity despite an unusually high porosity of greater than 96%, which was confirmed through micro-computed tomography (CT). The results show that this foam-like conducting open skeletal structure of the PEDOT/SiO2 composite is a good candidate for new applications. (C) 2016 Elsevier Ltd. All rights reserved.
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