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Adhesion Properties between Swollen Hydrogels in Air

Published online by Cambridge University Press:  26 February 2011

Daisuke Sakasegawa ,
Takaya Sato ,
Motoaki Goto  and
Atsushi Suzuki
Daisuke Sakasegawa
Affiliation:
[email protected], Yokohama National University, Environment and Information Sciences, 79-7 Tokiwadai Hodogaya-ku, Yokohama, Kanagawa, 240-8501, Japan, 81-045-339-3846, 81-045-339-3846
Takaya Sato
Affiliation:
[email protected], Yokohama National University, Environment and Information Sciences, Japan
Motoaki Goto
Affiliation:
[email protected], Saitama Daiichi Pharmaceutical Co., Ltd
Atsushi Suzuki
Affiliation:
[email protected], Yokohama National University, Environment and Information Sciences
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Abstract

Adhesion between swollen hydrogels was studied using a simple tack-evaluation technique by a point contact in air at room temperature. The hydrogel used here was poly(sodium acrylate) (PSA) gel physically cross-linked by aluminum ions. The adhesion force and the separation energy showed a power-law increase with separation velocity, normal force, and waiting period　prior to separate. Effects of the degrees of protonation in PSA as well as of dehydration on the adhesive properties are also presented. The results are discussed in terms of the surface molecular interaction and the bulk elastic and viscous properties.

Keywords

adhesiveelastic propertiespolymer
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 897: Symposium J – Biomemetic Polymers and Gels , 2005 , 0897-J08-10
Copyright
Copyright © Materials Research Society 2006

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