Journal
CARBOHYDRATE POLYMERS
Volume 149, Issue -, Pages 94-101Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.04.091
Keywords
Bionanocomposite hydrogel; Diels-Alder; Cellulose nanocrystals; Click Chemistry
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Funding
- GV/EJ Grupos Consolidados [IT-776-13]
- Domingo Martinez Foundation
- Universidad del Pais Vasco/Euskal Herriko Unibertsitatea (Ayudas para la Formacion de Personal Investigador) [PIFUPV10/034]
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This article deals with the preparation of bionanocomposite hydrogels from natural polymers and nanoentities, an emerging class of materials for biotechnological and biomedical applications. Herein, the applicability of the Diels-Alder click reaction to the design of bionanocomposite hydrogels from furan modified gelatin using maleimide-functionalized cellulose nanocrystals as multifunctional cocross-linkers is demonstrated. The functionalization of cellulose nanocrystals with maleimide moieties was confirmed by XPS. The swelling and rheological properties of the resulting bionanocomposite confirmed the formation of hydrogel networks with covalently embedded nanoentities. The Diels-Alder reaction resulted in the formation of stiffer networks with lower swelling ratios due to the formation of additional cross-linking points. The designed click strategy proved to be a promising candidate for the formation of fully renewable bionanocomposite hydrogels. (C) 2016 Elsevier Ltd. All rights reserved.
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