同位素分析仪-甲醛分析仪-北京世纪朝阳科技发展有限公司

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测量应用案例-20191004

2019-10-17 09:38:22

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文献名:Fabricating a pH-responsive membrane through interfacial in-situ assembly of microgels for water gating and self-cleaning 

 

作者Huawen Liua, Shanshan Yanga, Yuanwei Liua, Mengjie Miaoa, Yan Zhaob, Arcadio Sottoc, Congjie Gaoa, Jiangnan Shena 

aCenter for Membrane Separation and Water Science & Technology, Ocean College, Zhejiang University of Technology, Hangzhou 310014, China

bDepartment of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium

cRey Juan Carlos University, Camino del Molino, s/n, 28942 Fuenlabrada, Madrid, Spain

 

 

摘要:Environmental stimuli-responsive membranes have many latent applications in numerous fields, for example, chemical/biological separations, water treatment, drug delivery, self-cleaning material and chemical sensor. In this study, a pH-responsive membrane with in-situ assembled stimuli-responsive microgels on membrane surface and internal channels wall was fabricated by the coagulation step of the phase-inversion process. Interestingly, it was found that poly(4-vinyl pyridine) (P4VP) microgel can be mobilized onto the membrane surface by using an acidic coagulation bath. Meanwhile, the membrane-based materials with different hydrophobic properties showed a great effect on the migration of microgel onto the channel surface. The inner pores of these responsive membranes can self-adjust its size with the changes of outside pH stimulus. Moreover, the gate-controlled water permeability of pH-responsive membranes was explored at the pH interval from pH 2 to pH 6. Investigations revealed that the P4VP microgel-assembled membrane had excellent pH-responsive performance. In addition, these pH-responsive membranes with embedded microgels on surface and inner pores wall also exhibited excellent reversible behaviors and self-cleaning properties.


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同位素分析仪-甲醛分析仪-北京世纪朝阳科技发展有限公司 同位素分析仪-甲醛分析仪-北京世纪朝阳科技发展有限公司
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