Structural heterogeneities in starch hydrogels

Koev, Todor T., Muñoz-García, Juan C., Iuga, Dinu, Khimyak, Yaroslav Z. and Warren, Frederick J. (2020) Structural heterogeneities in starch hydrogels. Carbohydrate Polymers, 249. ISSN 0144-8617

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Abstract

Hydrogels have a complex, heterogeneous structure and organisation, making them promising candidates for advanced structural and cosmetics applications. Starch is an attractive material for producing hydrogels due to its low cost and biocompatibility, but the structural dynamics of polymer chains within starch hydrogels are not well understood, limiting their development and utilisation. We employed a range of NMR methodologies (CPSP/MAS, HR-MAS, HPDEC and WPT-CP) to probe the molecular mobility and water dynamics within starch hydrogels featuring a wide range of physical properties. The insights from these methods were related to bulk rheological, thermal (DSC) and crystalline (PXRD) properties. We have reported for the first time the presence of highly dynamic starch chains, behaving as solvated moieties existing in the liquid component of hydrogel systems. We have correlated the chains’ degree of structural mobility with macroscopic properties of the bulk systems, providing new insights into the structure-function relationships governing hydrogel assemblies.

Item Type: Article
Faculty \ School: Faculty of Science > School of Pharmacy
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 05 Aug 2020 23:49
Last Modified: 18 Oct 2020 00:01
URI: https://ueaeprints.uea.ac.uk/id/eprint/76317
DOI: 10.1016/j.carbpol.2020.116834

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