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Anomalous enhanced water diffusion in polysaccharide interpenetrating hydrogels

TitleAnomalous enhanced water diffusion in polysaccharide interpenetrating hydrogels
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2021
AuthorsMeo, C.D., Coviello T., Matricardi P., and Lamanna Raffaele
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume613
Pagination125892
Date PublishedJan-03-2021
ISSN09277757
KeywordsAlginate, Amphiphilic hydrogels, Anomalous diffusion, biocompatibility, diffusion, Diffusion properties, Hyaluronic acid, Hydrogels, Hydrogen bond networks, Hydrogen bonds, Hydrophobic domains, Interpenetrating hydrogels, Interpenetrating polymer network (IPN), Methacrylated hyaluronic acids, Saline water, Sodium chloride, Transport properties
Abstract

Water structure and dynamics are investigated by 1H NMR in a polysaccharide interpenetrating polymer network (IPN) based on calcium alginate and methacrylated hyaluronic acid. The effects of two solvents, water and a saline NaCl solution, on the transport properties of water and on the polymer structure are analyzed. Anomalous diffusion behavior of water in the different samples is investigated and correlated to the polymer structure. Up to three water fractions are detected in the IPN samples having different hydrogen bond network structure and diffusion properties. This work highlights how the aggregation of hydrophobic domains in amphiphilic hydrogels influences the transport properties of solvent water. In addition, the results emphasize the effect of charged ions, used to improve hydrogel biocompatibility, on the polymer network structure and of polymer interpenetration mechanisms. © 2020 Elsevier B.V.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85099207066&doi=10.1016%2fj.colsurfa.2020.125892&partnerID=40&md5=6522f78a14e591f987932b9193a8f741
DOI10.1016/j.colsurfa.2020.125892
Short TitleColloids and Surfaces A: Physicochemical and Engineering Aspects
Citation KeyMeo2021