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

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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.

Graphical abstract: Composition, thickness and properties of grafted copolymer brush coatings determined by ellipsometry: calculation and prediction

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Publication details

The article was received on 20 Nov 2017, accepted on 31 Dec 2017 and first published on 02 Jan 2018


Article type: Paper
DOI: 10.1039/C7SM02285A
Citation: Soft Matter, 2018, Advance Article
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    Composition, thickness and properties of grafted copolymer brush coatings determined by ellipsometry: calculation and prediction

    A. Kostruba, Y. Stetsyshyn, S. Mayevska, M. Yakovlev, P. Vankevych, Y. Nastishin and V. Kravets, Soft Matter, 2018, Advance Article , DOI: 10.1039/C7SM02285A

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