Scaling laws to predict humidity-induced swelling and stiffness in hydrogels
Autor: | Sujit S. Datta, H. Jeremy Cho, Yiwei Gao, Negin Garakani, Nicholas K. K. Chai |
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Rok vydání: | 2021 |
Předmět: |
chemistry.chemical_classification
Scaling law Materials science Contact Lenses Polymers FOS: Physical sciences Humidity Stiffness Hydrogels General Chemistry Polymer Condensed Matter - Soft Condensed Matter Condensed Matter Physics Swell chemistry Elastic Modulus Self-healing hydrogels medicine Humans Soft Condensed Matter (cond-mat.soft) Composite material Swelling medicine.symptom Elastic modulus |
Zdroj: | Soft Matter. 17:9893-9900 |
ISSN: | 1744-6848 1744-683X |
Popis: | From pasta to biological tissues to contact lenses, gel and gel-like materials inherently soften as they swell with water. In dry, low-relative-humidity environments, these materials stiffen as they de-swell with water. Here, we use semi-dilute polymer theory to develop a simple power-law relationship between hydrogel elastic modulus and swelling. From this relationship, we predict hydrogel stiffness or swelling at arbitrary relative humidities. Our close predictions of properties of hydrogels across three different polymer mesh families at varying crosslinking densities and relative humidities demonstrate the validity and generality of our understanding. This predictive capability enables more rapid material discovery and selection for hydrogel applications in varying humidity environments. This is a pre-peer-review manuscript |
Databáze: | OpenAIRE |
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