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Synthesis and physical properties of pH-sensitive semi-IPN hydrogels based on poly(dimethylaminoethyl methacrylate-co-PEG dimethacrylate) and poly(acrylic acid)

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Abstract

Hydrogels of semi-interpenetrating polymer networks (semi-IPNs) were prepared by two step reactions. Dimethylaminoethyl methacrylate (DMAM) and poly(ethylene glycol)-dimethacrylate (PEGDM) were copolymerized to yield hydrogels, and then acrylic acid (AA) monomer were adsorbed in the hydrogels followed by polymerization of AA to produce semi-IPNs. The swelling behavior of semi-IPNs depends largely on pH of medium, showing that the degree of swelling of the semi-IPNs exhibits a minimum at pH 6.0. It is observed that the elastic modulus of semi-IPNs is closely related to its swelling behavior.

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Authors and Affiliations

  1. Hyperstructured Organic Materials Research Center and School of Materials Science and Engineering, Seoul National University, 151-742, Seoul, Korea

    Goo Myun Kim & Won Ho Jo

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  1. Goo Myun Kim
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  2. Won Ho Jo
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Correspondence to Won Ho Jo.

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Kim, G.M., Jo, W.H. Synthesis and physical properties of pH-sensitive semi-IPN hydrogels based on poly(dimethylaminoethyl methacrylate-co-PEG dimethacrylate) and poly(acrylic acid). Fibers Polym 7, 223–228 (2006). https://doi.org/10.1007/BF02875676

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  • DOI: https://doi.org/10.1007/BF02875676

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