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Preparation and Characterization of Porous Poly (N-isopropylacrylamide) /Clay Nanocomposite Hydrogels

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Summary

A novel porous PNIPA/Clay nanocomposite hydrogel (NC hydrogel) was prepared by in situ free-radical polymerization using inorganic clay as a crosslinker and calcium carbonate (CaCO3) particle as a pore-forming agent and subsequent extraction of CaCO3 with acid. The structure and morphology of the hydrogels were characterized by means of FTIR, TEM and SEM. The temperature responsive behaviors, the deswelling behaviors and the mechanical properties of the NC hydrogels were investigated in detail. The results showed that the swelling ratios below VPTT and the deswelling rates of the NC hydrogels were significantly improved as compared with the hydrogels without introduction of CaCO3. Moreover, the NC hydrogels thus prepared also exhibited good mechanical properties.

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Correspondence to Jinghong Ma.

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Ma, J., Zhang, L., Li, Z. et al. Preparation and Characterization of Porous Poly (N-isopropylacrylamide) /Clay Nanocomposite Hydrogels . Polym. Bull. 61, 593–602 (2008). https://doi.org/10.1007/s00289-008-0988-5

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  • DOI: https://doi.org/10.1007/s00289-008-0988-5

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