کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1400648 | 984622 | 2011 | 12 صفحه PDF | دانلود رایگان |
Polysulfone (PSf) films were functionalized with block copolymers containing poly(n-butyl acrylate) (PBA) as anchor block which is able to firmly tether the biocidal quaternized poly(2-dimethylaminoethyl methacrylate) (PDMAEMAq) to the surface. Block copolymers were synthesized using sequential atom transfer radical polymerization (ATRP) and quaternization with methyl and/or octyl groups rendered the polymers biocidal. Upon reversible swelling of the PSf surface layer in the adsorption/entrapment process, incorporation of the block copolymer is anticipated to be stable; homopolymers, i.e., methyl- or octyl-quaternized PDMAEMAq, were investigated for comparison. The addition of salt to the functionalization solution containing the block copolymer induced a decrease in the critical micelle concentration and lead to higher functionalization efficiency. The impact of intra- or interchain interactions in these aggregates on adsorption and firm entrapment in PSf was determined by measuring contact angle, charge density and zeta potential.
The type of quaternization of poly(n-butyl acrylate)-block-poly(2-dimethylaminoethyl methacrylate) determines the solution properties of the polymer leading to a distinctly different adsorption behavior on polysulfone films for the block copolymer quaternized with methyl groups than the polymer with quaternized with long octyl and methyl groups.Figure optionsDownload as PowerPoint slide
Journal: European Polymer Journal - Volume 47, Issue 12, December 2011, Pages 2379–2390