کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
635104 1456091 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An extending of candidate for the hydrophilic modification of polysulfone membranes from the compatibility consideration: The polyethersulfone-based amphiphilic copolymer as an example
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
An extending of candidate for the hydrophilic modification of polysulfone membranes from the compatibility consideration: The polyethersulfone-based amphiphilic copolymer as an example
چکیده انگلیسی

Polyethersulfone (PES) based amphiphilic block copolymer was designed as a hydrophilic additive for the modification of polysulfone (PSf) membranes. The block copolymer with PES as the middle block and poly(ethylene glycol) methyl ether methacrylate (POEM) as side blocks was synthesized via the reversible addition-fragmentation chain transfer (RAFT) polymerization, using a PES-based macro-chain-transfer-agent (macro-CTA). The successful synthesis of the amphiphilic copolymer was confirmed by the nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC). Blend membranes were prepared via the non-solvent induced separation method. The differential scanning calorimetry (DSC) spectra of blend membranes displayed single glass transition temperatures (Tg), indicating the miscibility between the PSf and PES main chains. The melting peak at 37.4 °C presented the phase separation of POEM from hydrophobic domains in membranes. The great improvements in hydrophilicity, fouling-resistance, and water flux were found when the modifier was introduced. At last, the intact of RAFT agents from the additives were made use of to graft zwitterionic brushes on membrane surface.


► PES based amphiphilic copolymer was designed as hydrophilic modifier for PSf membrane.
► The PES based triblock copolymer was synthesized via a “living”/controlled method.
► The miscibility between PES and PSf was responsible for the good membrane forming.
► The intact of CTA from the additives was used to graft zwitterionic brushes on surface.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volumes 390–391, 15 February 2012, Pages 48–57
نویسندگان
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