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    Hydrophobic Coatings from Photochemically Prepared Hydrophilic Polymethacrylates via Electrospraying

    Year: 2017

    Journal: J. Polym. Sci. Pol. Chem., Volume 55, APR 15, page 1338–1344

    Authors: Isik, Tugba; Demir, Mustafa M.; Aydogan, Cansu; Ciftci, Mustafa; Yagci, Yusuf

    Organizations: Istanbul Technical University; Scientific and Technological Research Council of Turkey (TUBITAK)

    Keywords: electrospinning; electrospray; hyperbranched copolymers; photopolymerization; superhydrophobicity

    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.
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