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Issue 53, 2016, Issue in Progress
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Polyacrylamide strengthened mixed-charge hydrogels and their applications in resistance to protein adsorption and algae attachment

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Abstract

Mixed-charge polymer hydrogels were successfully prepared by copolymerization of different ratios of [2-(meth-acryloyloxy) ethyl] trimethylammonium (TMA) and 3-sulfopropyl methacrylate (SA). Then, a second polyacrylamide (PAAM) network was incorporated into the pre-prepared hydrogel to form a double network (DN) hydrogel. The compositions of these DN hydrogels were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Rheological and compressive measurements confirmed that the mechanical performances of the DN hydrogels were significantly improved by incorporation of a second PAAM network, compared with the according single network (SN) hydrogels. The amount of protein absorbed on the DN hydrogel surface was related to the ratio of TMA/SA and the ionic strength. The DN hydrogel with equal amount of TMA and SA exhibited better protein resistance. In addition, Phaeodactylum tricornutum and Chlorella were chosen for the anti-algae assay. The results displayed that the negatively charged hydrogels showed better anti-algae fouling performance than the positively charged and the neutral DN hydrogels. These DN hydrogels have promising applications in marine antifouling coating and interfaces of biomaterials.

Graphical abstract: Polyacrylamide strengthened mixed-charge hydrogels and their applications in resistance to protein adsorption and algae attachment

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Publication details

The article was received on 29 Feb 2016, accepted on 26 Apr 2016, published on 26 Apr 2016 and first published online on 26 Apr 2016


Article type: Paper
DOI: 10.1039/C6RA05312B
Citation: RSC Adv., 2016,6, 47349-47356
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    Polyacrylamide strengthened mixed-charge hydrogels and their applications in resistance to protein adsorption and algae attachment

    D. Jiang, Z. Liu, X. He, J. Han and X. Wu, RSC Adv., 2016, 6, 47349
    DOI: 10.1039/C6RA05312B

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