Abstract
In this study, two kinds of dual-stimuli-responsive (pH and temperature) hydrogels were prepared through the copolymerization of acrylic acid (hydrophilic monomer) and N-isopropylacrylamide (thermosensitive monomer) with a modified β-cyclodextrin crosslinker or N,N′-methylenediacrylamide in aqueous solution. The swelling properties of these hydrogels, including the pH and temperature dependences of their equilibrium swelling ratios, their shrinking kinetics, and their de-swelling behavior, were investigated. The protein bovine serum albumin was chosen as a model drug to measure their release behavior at different pH values and temperatures. The results revealed that the hydrogel that incorporated the β-cyclodextrin crosslinker exhibits improved properties and could have a wide range of potential uses in biomedicine.
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Acknowledgments
Financial support of this study by the China Postdoctoral Science Foundation (No. 2012M521007) and the Practice Innovation Training Program Projects for Jiangsu College Students (No. 2012JSSPITP1205) are gratefully acknowledged.
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Zheng, S., Hu, J., Xu, X. et al. Thermo- and pH-sensitive hydrogels containing the β-cyclodextrin moiety for controlled protein release. Monatsh Chem 145, 39–46 (2014). https://doi.org/10.1007/s00706-013-0989-4
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DOI: https://doi.org/10.1007/s00706-013-0989-4