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Network elasticity of a model hydrogel as a function of swelling ratio : from shrinking to extreme swelling states

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Title: Network elasticity of a model hydrogel as a function of swelling ratio : from shrinking to extreme swelling states
Authors: Hoshino, Ken-ichi Browse this author
Nakajima, Tasuku Browse this author →KAKEN DB
Matsuda, Takahiro Browse this author
Sakai, Takamasa Browse this author →KAKEN DB
Gong, Jian Ping Browse this author →KAKEN DB
Issue Date: 21-Dec-2018
Publisher: Royal Society of Chemistry
Journal Title: Soft matter
Volume: 14
Issue: 47
Start Page: 9693
End Page: 9701
Publisher DOI: 10.1039/C8SM01854E
PMID: 30460959
Abstract: n this work, we intended to investigate the relationship between the swelling ratio Q and Young's modulus E of hydrogels from their contracted state to extreme swelling state and elucidate the underlining molecular mechanism. For this purpose, we used tetra-poly(ethylene glycol) (tetra-PEG) gel, whose network parameters are well known, as the polymer backbone, and we succeeded in tuning the swelling of the gel by a factor of 1500 times while maintaining the topological structure of the network unchanged, using an approach combining a molecular stent method and a PEG dehydration method. A master curve of Q–E, independent of the method of obtaining Q, was obtained. Using the worm-like chain model, the experimentally determined master curve can be well reproduced. We also observed that the uniaxial stress–strain curve of the hydrogel can be well predicted by the worm-like chain model using the structure parameters determined from the fitting of the Q–E experimental curve.
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)
国際連携研究教育局 : GI-CoRE (Global Institution for Collaborative Research and Education : GI-CoRE) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 龔 剣萍 (Gong Jian Ping)

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