Hydrophobic Coatings from Photochemically Prepared Hydrophilic Polymethacrylates via Electrospraying

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Isik T., DEMİR M. M., Aydogan C., Çiftçi M., Yagci Y.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol.55, no.8, pp.1338-1344, 2017 (SCI-Expanded) identifier identifier


Linear poly(hydroxyethyl methacrylate-co-methyl methacrylate) P(HEMA-co-MMA) and poly(dimehylaminoethyl methacrylate-co-methyl methacrylate) P(DMAEMA-co-MMA) and their corresponding hyperbranched copolymers were synthesized by conventional photoinitiated free radical polymerization and self-condensing vinyl polymerization (SCVP) using Type I and Type II photoinitiators, respectively. Then, the polymers were processed by electrospraying in N, N-dimethylformamide. The surface of the resulting electrospray coatings was examined by SEM, XPS, and WCA then compared with those prepared by drop casting. Regardless of the structural nature of the polymers, electrospraying allows the preparation of rough surface that shows more hydrophobic behavior. Electrospray coatings with linear and hyperbranched copolymers exhibited WCA as similar to 150 degrees and similar to 130 degrees, respectively, indicating that branching reduces the WCA. (C) 2017 Wiley Periodicals, Inc.