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    Hydrophilic modification of polyvinyl chloride with polyacrylic acid using ATRP

    Year: 2020

    Journal: RSC Adv., Volume 10, SEP 29, page 35692–35700

    Authors: Rusen, Edina; Somoghi, Raluca; Busuioc, Cristina; Diacon, Aurel

    Organizations: University Politehnica of Bucharest, through the PubArt - Program; Competitiveness Operational Programme 2014-2020, Action 1.1.4: Attracting high-level personnel from abroad in order to enhance the RD capacity [P_37_471, 47/05.09.2016]; EUEuropean Commission [638/12.c03.2014, SMIS-CSrNR 48652]; Ministry of Research and Inovation, Nucleu Programme [PN.19.23.01.01 Smart-Bi]

    The aim of this paper was the synthesis of amphiphilic copolymers by employing an atom transfer radical polymerization (ATRP), control polymerization "grafting from" method, initiated both on the surface of an iodinated polyvinyl chloride (PVC-I) membrane and in solution. The iodination of PVC was performed through a Conant-Finkelstein reaction that afforded a 30% molar transformation. Using the contact angle measurements, we highlighted the higher degree of grafting polyacrylic acid (PAA) in the case of solution polymerization, the polar fraction increasing significantly. The micromembrane obtained by surface grafting has pores with a homogenous distribution, which contain -COOH functional groups and with a pore size that decreased about 10 times compared to the initial membrane. The TGA analysis highlighted the thermal resistance changes that the polymers registered.
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