Composition, thickness and properties of grafted copolymer brush coatings determined by ellipsometry: Calculation and prediction

Andriy Kostruba, Yurij Stetsyshyn, Sofija Mayevska, Maksym Yakovlev, Petro Vankevych, Yuriy Nastishin, Vasyl Kravets

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The composition, thickness and properties of poly(4-vinylpyridine-co-oligo(ethylene glycol)ethyl ether methacrylate246) [P(4VP-co-OEGMA246)] copolymer grafted brush coatings attached to glass were studied in the dry and swollen states using ellipsometry. These measured data are in good agreement with predicted (estimated) changes in the amount of water, refractive index and thickness of the grafted copolymer brush coatings on swelling. For POEGMA brushes the thickness of the coatings on swelling at 20 °C can be more than double, in contrast to P4VP where those changes are insignificant. The presence of 4VP units in the structure of the P(4VP-co-OEGMA246) copolymer grafted brushes significantly decreases the hydration degree even for coatings with very low concentrations of 4VP units.

    Original languageEnglish
    Pages (from-to)1016-1025
    Number of pages10
    JournalSoft Matter
    Volume14
    Issue number6
    Early online date2 Jan 2018
    DOIs
    Publication statusPublished - 2018

    Research Beacons, Institutes and Platforms

    • National Graphene Institute

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