Facile Fabrication of Composite Membranes with Dual Thermo- and pH-Responsive Characteristics

• DOI: 10.1021/acsami.7b02427
• Publication Date: 2017-04-11T16:02:34Z
• Authors: Bing Ma; Xiao-Jie Ju; Feng Luo; Yu-Qiong Liu; Yuan Wang; Zhuang Liu; Wei Wang; Rui Xie; Liang-Yin Chu
• Keywords: Polystyrene

Facile fabrication of novel functional membranes with excellent dual thermo- and pH-responsive characteristics has been achieved by simply designing dual-layer composite membranes. pH-Responsive poly(styrene)-block-poly(4-vinylpyridine) (PS-b-P4VP) block copolymers polystyrene blended thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) nanogels are respectively used to construct the top layer bottom The stretching/coiling conformation changes P4VP chains around pKa (∼3.5–4.5) provide extraordinary characteristics, volume phase transitions PNIPAM at pore/matrix interfaces in transition temperature (VPTT, ∼33 °C) great characteristics. microstructures, permeability performances, stimuli-responsive can be well tuned adjusting content thickness PS-b-P4VP layer. water fluxes changed order magnitude changing environment pH, permeation performances satisfactorily reversible reproducible. membrane strategy this work provides valuable guidance for further development or even multi