Poroelasticity of highly confined hydrogel films measured with a surface forces apparatus.,Soft Matter

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Poroelasticity of highly confined hydrogel films measured with a surface forces apparatus.
Soft Matter ( IF 2.9 ) Pub Date : 2020-08-27 , DOI: 10.1039/d0sm01312a
George D Degen ₁ , Yen-Tsung Chen ₁ , Allison L Chau ₂ , Lisa K Månsson ₃ , Angela A Pitenis ₂

Affiliation

The influence of poroelasticity on the contact mechanics of thin polyacrylamide films was investigated with a surface forces apparatus (SFA). A model based on a thin film approximation described compression forces for hydrated gels; polymer scaling theory explained the effects of gel dehydration. The results demonstrate that fluid flow dictates the apparent stiffness of highly confined poroelastic films.

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