Implicit rule on the elastic function of a swollen polyacrylamide hydrogel
A full understanding of the elastic properties of hydrogels under swelling is required for their practical application in the chemical and biomedical engineering fields. This is because hydrogels are expected to retain water during mechanical use in moist atmospheres. In the present study, we invest...
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| Veröffentlicht in: | Soft matter 2021-05, Vol.17 (19), p.4979-4988 |
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| container_title | Soft matter |
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| creator | Kawai, Ryota Tanaka, Hiro Matsubara, Seishiro Ida, Shohei Uchida, Makoto Okumura, Dai |
| description | A full understanding of the elastic properties of hydrogels under swelling is required for their practical application in the chemical and biomedical engineering fields. This is because hydrogels are expected to retain water during mechanical use in moist atmospheres. In the present study, we investigated the relationship between the elastic modulus and the swelling ratio in a specific type of hydrogel (a polyacrylamide gel). The elasticity and swelling data revealed that these two parameters are proportionally related in hydrogels comprising adequate amounts of monomers and crosslinkers. We also demonstrated that this proportional relationship inherently conforms to the linear elastic behaviour predicted by the Flory-Rehner free energy function (the F-R model). The implicit rule is established by the extended F-R model with two scaling exponents. The extended model is capable of representing the irregular elasticity of swollen gels formed from low- or high-molecular-weight polymers.
A full understanding of the elastic properties of hydrogels under swelling is required for their practical application. Graphs show the distribution of the shear moduli and swelling factors in the as-prepared state and the equilibrium swelling state. |
| doi_str_mv | 10.1039/d1sm00346a |
| format | Article |
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A full understanding of the elastic properties of hydrogels under swelling is required for their practical application. 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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Biomedical engineering Elastic properties Free energy Gels Hydrogels Mechanical properties Modulus of elasticity Monomers Polyacrylamide Polymers Swelling ratio |
| title | Implicit rule on the elastic function of a swollen polyacrylamide hydrogel |
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