Friction of hydrogels with controlled surface roughness on solid flat substrates

Yashima, Shintaro; Takase, Natsuko; Kurokawa, Takayuki; Gong, Jian Ping

doi:10.1039/c3sm52883a


Hokkaido University \| Library \| HUSCAP	Advanced Search		言語

	Home
	About HUSCAP
	Open Access Policy

	Browse by Author

Browse
	Communities & Collections

	Scholarly Journals
	Theses
	Doctoral Dissertations Listed by Graduate Schools
	Conference Procs.
	Events

	HUSCAP Senior (in Japanese)

	Societies

	Downloads (country)

For university staff
	How to post your papers to HUSCAP
	Publication of theses
	Helpline about theses publication

Open Archives Compliant

You can search our collection also at:
	Google
	Google Scholar
	CiNii
	IRDB
	OAIster
	NDLTD

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Life Science / Faculty of Advanced Life Science >
Peer-reviewed Journal Articles, etc >

Friction of hydrogels with controlled surface roughness on solid flat substrates

This item is licensed under:Creative Commons Attribution 3.0 Unported

Files in This Item:

c3sm52883a.pdf

2.04 MB

PDF

View/Open

Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/57106

Title:	Friction of hydrogels with controlled surface roughness on solid flat substrates
Authors:	Yashima, Shintaro Browse this author
	Takase, Natsuko Browse this author
	Kurokawa, Takayuki Browse this author →KAKEN DB
	Gong, Jian Ping Browse this author →KAKEN DB
Issue Date:	23-Oct-2014
Publisher:	Royal Society of Chemistry
Journal Title:	Soft Matter
Volume:	10
Issue:	18
Start Page:	3192
End Page:	3199
Publisher DOI:	10.1039/c3sm52883a
PMID:	24718724
Abstract:	This study investigated the effect of hydrogel surface roughness on its sliding friction against a solid substrate having modestly adhesive interaction with hydrogels under small normal pressure in water. The friction test was performed between bulk polyacrylamide hydrogels of varied surface roughness and a smooth glass substrate by using a strain-controlled rheometer with parallel-plates geometry. At small pressure (normal strain 1.4-3.6%), the flat surface gel showed a poor reproducibility in friction. In contrast, the gels with a surface roughness of 1-10 mm order showed well reproducible friction behaviors and their frictional stress was larger than that of the flat surface hydrogel. Furthermore, the flat gel showed an elasto-hydrodynamic transition while the rough gels showed a monotonous decrease of friction with velocity. The difference between the flat surface and the rough surface diminished with the increase of the normal pressure. These phenomena are associated with the different contact behaviors of these soft hydrogels in liquid, as revealed by the observation of the interface using a confocal laser microscope.
Rights:	http://creativecommons.org/licenses/by/3.0/
Type:	article
URI:	http://hdl.handle.net/2115/57106
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)

OAI-PMH ( junii2 , jpcoar_1.0 )

- Hokkaido University