Synthesis and Properties of Poly(N-isopropylacrylamide-co-acrylamide) Hydrogels |
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| Authors: | Jie Chen Yong Pei Li-Ming Yang Li-Li Shi Hao-Jie Luo |
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| Affiliation: | Department of Chemical Engineering and Technology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 201800, China |
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| Abstract: | Poly (N-isopropylacrylamide-co-acrylamide) [Poly(NIPAAm-co-AAm)] with different feed ratios were obtained by radiation polymerization using Co60γ-rays. Swelling equilibrium data in various media: deionized water, aqueous NaCl solutions and different pH buffer solutions, were determined. It appeared that the lower critical transition temperature (LCST) of the hydrogels increased with an increasing acrylamide content and decreased with increasing ionic strength. Moreover, LCST was affected by pH. |
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| Keywords: | hydrogel ionic strength LCST pH-sensitive Poly(N-isopropylacrylamide-co-acrylamide) |
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