Experiments and modeling of the viscoelastic behavior of polymeric gels

Document Type

Article

Publication Date

4-1-2020

Abstract

A polymeric gel is a cross-linked polymer network swollen with a solvent. Also, as is well known many polymeric materials exhibit viscoelastic behavior in their mechanical response. In this work, we report on our recent experimental observations and theoretical modeling involving the change in the viscoelastic response of the polymeric material VHB caused by equilibrium swelling in multiple solvents. To characterize this change, we have developed an experimental procedure that includes mechanical testing when virgin, free swelling, mechanical testing when swollen, and mechanical testing after drying. A model is used to help interpret the experimental results. The key finding of this work is that our results indicate that the viscoelastic behavior of initially dry VHB, reversibly, becomes essentially hyperelastic when swollen to equilibrium in multiple solvents.

Identifier

85076669376 (Scopus)

Publication Title

Journal of the Mechanics and Physics of Solids

External Full Text Location

https://doi.org/10.1016/j.jmps.2019.103829

ISSN

00225096

Volume

137

Grant

1463121

Fund Ref

National Science Foundation

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