Development and characterization of thermosensitive hydrogels based on poly(N‐isopropylacrylamide) and calcium alginate |
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| Authors: | Stojanka Petrusic Maryline Lewandowski Stéphane Giraud Petar Jovancic Branko Bugarski Sanja Ostojic Vladan Koncar |
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| Affiliation: | 1. Univ Lille Nord de France, F‐59000 Lille, France;2. Ecole Nationale Supérieure des Arts et Industries Textiles, GEMTEX, F‐59100 Roubaix, France;3. Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia;4. Institute of General and Physical Chemistry, Belgrade, Serbia |
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| Abstract: | This work refers to the synthesis and characterization of thermosensitive hydrogels based on interpenetrating polymer networks (IPNs) of poly(N‐isopropylacrylamide) (PNIPAAm) and calcium alginate in the form of films. The influence of the crosslinking degree of PNIPAAm and alginate content on thermal, swelling, mechanical, and morphological properties of hydrogels is investigated in detail. Characterization of pure PNIPAAm hydrogels and IPN hydrogels was performed by FTIR, DSC, DMA, and SEM. In addition, the studies of equilibrium swelling behavior as well as swelling, deswelling, and reswelling kinetics are performed. The results obtained imply the benefits of synthesizing IPNs based on PNIPAAm and calcium alginate over pure PNIPAAm hydrogels. The presence of calcium alginate contributes to the improvement of mechanical properties, the deswelling rate of hydrogels, and the network porosity, without altering the thermosensitivity of PNIPAAm significantly. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 |
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| Keywords: | thermosensitive hydrogels interpenetrating polymer network (IPN) swelling behavior mechanical properties morphology |
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