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The Surface Wettability and Adhesion of Poly(Ester Urethane)s and Poly(Ether Urethane)s
Authors:Mihaela Homocianu  Doina Macocinschi  Maria Butnaru
Institution:1. “Petru Poni” Institute of Macromolecular Chemistry , Grigore Ghica Voda Alley , 41A, 700487, Iasi, Romania;2. “Gr. T. Popa” University of Medicine and Pharmacy, Faculty of Medical Bioengineering , 700115, Iasi, Romania
Abstract:In this study the wetting characteristics of untreated and plasma-treated polyurethane thin films were investigated. The degree of wettability was investigated by measuring the contact angle formed between a liquid drop and the solid surface. The work of adhesion, interfacial free energy, spreading coefficient, and Girifalco–Good's interaction parameter changed significantly for plasma-treated polyurethane films. Both complete and partial wetting were analyzed from the spreading coefficient of liquid drops on the solid substrate.
Keywords:interfacial free energy  poly(ester urethane)s  poly(ether urethane)s  spreading coefficients  wettability  work of adhesion
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