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Modulation and Characterization of the Double Network Hydrogel Surface-Bulk Transition

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Title: Modulation and Characterization of the Double Network Hydrogel Surface-Bulk Transition
Authors: Frauenlob, Martin Browse this author
King, Daniel R. Browse this author
Guo, Honglei Browse this author
Ishihara, Seiichiro Browse this author →KAKEN DB
Tsuda, Masumi Browse this author →KAKEN DB
Kurokawa, Takayuki Browse this author →KAKEN DB
Haga, Hisashi Browse this author →KAKEN DB
Tanaka, Shinya Browse this author →KAKEN DB
Gong, Jian Ping Browse this author →KAKEN DB
Issue Date: 10-Sep-2019
Publisher: American Chemical Society(ACS)
Journal Title: Macromolecules
Volume: 52
Issue: 17
Start Page: 6704
End Page: 6713
Publisher DOI: 10.1021/acs.macromol.9b01399
Abstract: The hydrogel chemical structure at the gel-solution interface is important toward practical use, especially in tough double network (DN) hydrogels that have promising applications as structural biomaterials. In this work, we regulate the surface chemical structure of DN hydrogels and the surface–bulk transition by the molding substrate used for the synthesis of the second network. To characterize the surface and bulk structure, we combined attenuated total reflectance Fourier-transform infrared spectroscopy and a newly developed microelectrode technique that probe the electric potential distribution within a hydrogel. We found that the polymerization on a repulsive substrate leads to the formation of a thin layer of a second network on the surface of DN hydrogels, which makes the surface different from the bulk. By controlling the second network polymerization conditions and molding substrate, the surface–bulk transition region can be regulated, so that either only the second network or both networks are present at the DN hydrogel surface. Through these findings, we gained a new insight into the structure formation at the DN hydrogel surface, and this leads to easy regulation of the hydrogel surface structure and properties.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Macromolecules, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Type: article (author version)
Appears in Collections:生命科学院・先端生命科学研究院 (Graduate School of Life Science / Faculty of Advanced Life Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 龔 剣萍 (Gong Jian Ping)

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