Journal
CARBOHYDRATE POLYMERS
Volume 150, Issue -, Pages 166-171Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.05.017
Keywords
beta-Cyclodextrin; Frontal polymerization; Hydrogel; Glass transition temperature; Compression test; Swelling ratio
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For the first time, the synthesis of polymeric hydrogels containing cyclodextrins (CDs) obtained by frontal polymerization (FP) is reported. In particular, the effects of CDs on poly(2-hydroxyethylacrylate) hydrogel properties are investigated. In a first series of materials, (3-cyclodextrin is dispersed into the polymer matrix, while in the second one acryloyl-p-cyclodextrin is grafted to poly(2-hydroxyethylacrylate) chains. FP parameters (front velocity and maximum temperature), swelling properties, glass transition temperatures and mechanical properties of the hydrogels are studied. Results show that both types of cyclodextrin influence the above properties, and the major effects are found for concentration higher than 1 mol% of acryloyl-p-cyclodextrin. Namely, a significant increase of glass transition temperature and of compression moduli are found. Finally, this study demonstrates that FP is a convenient technique to obtain CD -containing hydrogels, in which the type and amount of cyclodextrin can be suitably modulated to tune polymer properties, in function of the desired hydrogel applications. (C) 2016 Elsevier Ltd. All rights reserved.
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