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Bioinspired and biocompatible adhesive coatings using poly(acrylic acid)-grafted dopamine

Authors

  • Li Jie Duan,

    1. Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi, 440–746 Korea
    2. School of Chemistry and Life Sciences, Changchun University of Technology, Changchun, 130022 People's Republic of China
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  • Ying Liu,

    1. Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi, 440–746 Korea
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  • Jiheung Kim,

    1. Department of Chemical Engineering, Sungkyunkwan University, Suwon, Gyeonggi, 440–746 Korea
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  • Dong June Chung

    Corresponding author
    1. Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi, 440–746 Korea
    • Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi, Korea
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Abstract

Poly(acrylic acid) (PAA) was grafted with dopamine to increase its adhesion force to metal surface. Nitinol plate surfaces were then modified by coating with PAA-g-dopamine. To synthesize PAA-g-dopamine, PAA was first activated by dicyclohexylcarbodiimide and N-hydroxysuccinimide (NHS) to form PAA–NHS. Dopamine was then copolymerized with PAA–NHS in an aqueous medium at pH 8.5. We propose to increase the adhesion of adhesive PAA-g-dopamine on nitinol to improve its durability. In this article, we studied wettability, surface elemental composition, and surface morphology. Biocompatibility was also assessed by L929 fibroblast cells in vitro. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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