Surface modification of pu membranes by graft copolymerization with acrylamide and itaconic acid monomers
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Date
2001-10
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Elsevier B.V.
Abstract
To improve water wettability of polyurethane (PU), graft copolymerization of acrylamide (AAm) and itaconic acid (IA) was performed using benzoyl peroxide (BO) initiator. The grafting reaction was carried out by placing the membranes in aqueous solutions of AAm and IA at constant temperatures. Variations of graft yield with time, temperature, initiator and monomer concentrations were investigated. The optimum temperature, polymerization time, initiator and monomer concentrations for AAm were found to be 80°C, 2 h, 4.0x10(-2) M and 1.5 M and for IA, 80°C, 1 h, 4.0x10(-2) M and 1.5 M, respectively. The membranes were characterized by FTIR spectroscopy and scanning electron microscopy (SEM) analysis and the effect of grafting on equilibrium water content (EWC) of PU membranes was obtained by swelling measurements.
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Keywords
Graft kopolimerizasyonu, Poliüretan membranlar, Akrilamid, Itakonik asit, Denge su içeriği, Polyurethanes, Poliüretanlar, Graft copolymerization, Polyurethane membranes, Acrylamide, Itaconic acid, SEM, FTIR, Equilibrium water content
Citation
Babayiğit, D. ve M. Pulat. (2001) Surface modifıcation of pu membranes by graft copolymerization with acrylamide and itaconic acid monomers. Polymer Testing, Volume 20, Issue 2, October 2001, Pages 209-216