| AVS 66th International Symposium & Exhibition | |
| Biomaterial Interfaces Division | Tuesday Sessions |
| Session BI-TuP |
| Session: | Biomaterial Interfaces Posters/Flash Session |
| Presenter: | Florian Victor Koschitzki, Ruhr-University Bochum, Germany |
| Authors: | F.V. Koschitzki, Ruhr-University Bochum, Germany A. Rosenhahn, Ruhr-University Bochum, Germany |
| Correspondent: | Click to Email |
Due to ecological and economic consequences, the prevention of undesirable settlement of biomass on surfaces in the marine environment is of key interest. Thus, research on effective surface-modification and application of antifouling coatings is demanded. Zwitterion containing hydrogels with stable hydration have shown promising results for ultra-low fouling materials. The spectrum of application ranges from protein and plasma resistance1, studies of bacterial adhesion2, biomedical purposes3 to settlement experiments with marine biofoulers.4 Although understanding the influence of anionic and cationic groups, charge distribution and charge neutrality can be discussed using self-assembled monolayers5 (SAM), zwitterionic moieties must eventually be applied in the form of polymer coatings for technical purposes. To combine mechanical and antifouling properties of several materials, amphiphilic polymers are increasingly being explored.6 To demonstrate the advantage of random copolymers over homopolymers regarding antifouling 7, polymer coatings with varying hydrophilicity were prepared. Therefore, a carboxybetaine methacrylate was incorporated into a hydrophobic matrix via «grafting to» photoinduced radical polymerisation. Monomer solutions were applied on glass substrates, functionalized by 3-trimethoxysilyl propyl methacrylate. The samples were characterized by AFM, CA, IR and SEM. For further investigations concerning the antifouling properties, microfluidic experiments with the diatom genus Navicula perminuta were carried out. The results display severe enhancement of fouling prevention at small zwitterionic content of only (5 wt%).
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