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Huang B, Chen L, Chiou Y, Whang G, Luo Y, Yan Y, Wei K, He X, Dunn B, Wu P. Bubble-Channeling Electrophoresis of Honeycomb-Like Chitosan Composites. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203948. [PMID: 36180403 PMCID: PMC9661845 DOI: 10.1002/advs.202203948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/23/2022] [Indexed: 06/16/2023]
Abstract
A chitosan composite with a vertical array of pore channels is fabricated via an electrophoretic deposition (EPD) technique. The composite consists of chitosan and polyethylene glycol, as well as nanoparticles of silver oxide and silver. The formation of hydrogen bubbles during EPD renders a localized increase of hydroxyl ions that engenders the precipitation of chitosan. In addition, chemical interactions among the constituents facilitate the establishment of vertical channels occupied by hydrogen bubbles that leads to the unique honeycomb-like microstructure; a composite with a porosity of 84%, channel diameter of 488 µm, and channel length of 2 mm. The chitosan composite demonstrates an impressive water uptake of 2100% and a two-stage slow release of silver. In mass transport analysis, both Disperse Red 13 and ZnO powders show a much enhanced transport rate over that of commercial gauze. Due to its excellent structural integrity and channel independence, the chitosan composite is evaluated in a passive suction mode for an adhesive force of 9.8 N (0.56 N cm-2 ). The chitosan composite is flexible and is able to maintain sufficient adhesive force toward objects with different surface curvatures.
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Affiliation(s)
- Bo‐Han Huang
- Department of Materials Science and EngineeringNational Yang Ming Chiao Tung UniversityHsinchu300Taiwan
| | - Li‐Jie Chen
- Department of Materials Science and EngineeringNational Yang Ming Chiao Tung UniversityHsinchu300Taiwan
| | - Yu‐Jie Chiou
- Department of Materials Science and EngineeringNational Yang Ming Chiao Tung UniversityHsinchu300Taiwan
| | - Grace Whang
- Department of Materials Science and EngineeringUCLALos AngelesCA90095USA
| | - Yunkai Luo
- Department of Materials Science and EngineeringUCLALos AngelesCA90095USA
| | - Yichen Yan
- Department of Materials Science and EngineeringUCLALos AngelesCA90095USA
| | - Kung‐Hwa Wei
- Department of Materials Science and EngineeringNational Yang Ming Chiao Tung UniversityHsinchu300Taiwan
| | - Ximin He
- Department of Materials Science and EngineeringUCLALos AngelesCA90095USA
| | - Bruce Dunn
- Department of Materials Science and EngineeringUCLALos AngelesCA90095USA
| | - Pu‐Wei Wu
- Department of Materials Science and EngineeringNational Yang Ming Chiao Tung UniversityHsinchu300Taiwan
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Huang BH, Li SY, Chiou YJ, Chojniak D, Chou SC, Wong VCM, Chen SY, Wu PW. Electrophoretic fabrication of a robust chitosan/polyethylene glycol/polydopamine composite film for UV-shielding application. Carbohydr Polym 2021; 273:118560. [PMID: 34560971 DOI: 10.1016/j.carbpol.2021.118560] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/20/2021] [Accepted: 08/11/2021] [Indexed: 01/09/2023]
Abstract
The film-forming process of chitosan composite films is an important issue because it affects their experimental design, chemicals used, and feasibility of large-scaled fabrication. In this work, electrophoresis is employed to produce chitosan composite films with significantly reduced processing time and environmentally friendly chemicals. With the addition of hydrogen peroxide and polyethylene glycol, the parasitic hydrogen bubble formation during the electrophoresis of chitosan and polydopamine is effectively inhibited that leads to the formation of a defectless chitosan/polyethylene glycol/polydopamine composite film which could be removed from the substrate readily. In addition, the chitosan/polyethylene glycol/polydopamine composite film reveals significantly improved tensile strength and a slower decomposition rate as compared to those of chitosan film and chitosan/polyethylene glycol composite film. This is attributed to the strong interaction between chitosan and polydopamine. Lastly, the chitosan/polyethylene glycol/polydopamine composite film exhibits excellent UV-shielding ability without compromising its visible transparency.
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Affiliation(s)
- Bo-Han Huang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
| | - Shih-Yuan Li
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
| | - Yu-Jie Chiou
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
| | - David Chojniak
- Department of Mechanical Engineering, Reutlingen University, Reutlingen 72762, Germany; Division Photovoltaics, Group III-V Cell and Module Characterization, Fraunhofer-Institut für Solare Energiesysteme ISE, Heidenhofstraße 2, 79110 Freiburg, Germany
| | - Shih-Cheng Chou
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC
| | - Vienna Chi Man Wong
- School of Materials Science and Engineering, University of New South Wales, Sydney 2052, Australia
| | - San-Yuan Chen
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC; Graduate Institute of Biomedical Science, China Medical University, Taichung 406, Taiwan, ROC
| | - Pu-Wei Wu
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan, ROC.
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