Poroelasticity of highly confined hydrogel films measured with a surface forces apparatus.
basic_science · Level V
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- Record sourced from PubMed, PMID 32935726.
- Also identified by DOI 10.1039/d0sm01312a.
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Abstract
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.