Double Stimuli-Responsive Isoporous Membranes via Post-Modification of pH-Sensitive Self-Assembled Diblock Copolymer Membranes

被引：197

作者：

Clodt, Juliana Isabel ^{[1
]}

Filiz, Volkan ^{[1
]}

Rangou, Sofia ^{[1
]}

Buhr, Kristian ^{[1
]}

Abetz, Clarissa ^{[1
]}

Hoeche, Daniel ^{[2
]}

Hahn, Janina ^{[1
]}

Jung, Adina ^{[1
]}

Abetz, Volker ^{[1
]}

机构：

[1] Helmholtz Zentrum Geesthacht, Polymer Res Inst, D-21502 Geesthacht, Germany

[2] Helmholtz Zentrum Geesthacht, Inst Mat Res, D-21502 Geesthacht, Germany

来源：

ADVANCED FUNCTIONAL MATERIALS | 2013年 / 23卷 / 06期

关键词：

block copolymers; membranes; functional coatings; surface modification; stimuli-responsive materials; polydopamine; POLYSULFONE ULTRAFILTRATION MEMBRANES; BEAM-BASED FUNCTIONALIZATION; SURFACE-CHEMISTRY; BLOCK-COPOLYMER; POLYETHERSULFONE; TEMPERATURE; POLY(N-ISOPROPYLACRYLAMIDE); BEHAVIOR; BRUSHES; DENSITY;

D O I：

10.1002/adfm.201202015

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Double stimuli-responsive membranes are prepared by modification of pH-sensitive integral asymmetric polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) diblock copolymer membranes with temperature-responsive poly(N-isopropylacrylamide) (pNIPAM) by a surface linking reaction. PS-b-P4VP membranes are first functionalized with a mild mussel-inspired polydopamine coating and then reacted via Michael addition with an amine-terminated pNIPAM-NH2 under slightly basic conditions. The membranes are thoroughly characterized by nuclear magnetic resonance (1H-NMR), Fourier transform infrared spectroscopy and X-ray-induced photoelectron spectroscopy. Additionally dynamic contact angle measurements are performed comparing the sinking rate of water droplets at different temperatures. The pH- and thermo-double sensitivities of the modified membranes are proven by determining the water flux under different temperature and pH conditions.

引用

页码：731 / 738

页数：8

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