智能膜开关尺寸与孔径的匹配性对膜响应性能的影响规律

doi:10.16085/j.issn.1000-6613.2017-0803

化工进展 ›› 2018, Vol. 37 ›› Issue (01): 223-229.DOI: 10.16085/j.issn.1000-6613.2017-0803

智能膜开关尺寸与孔径的匹配性对膜响应性能的影响规律

武文¹, 朱铧丞², 谢锐^1,3, 张磊¹, 骆枫¹, 巨晓洁^1,3, 汪伟¹, 刘壮¹, 褚良银^1,3

1 四川大学化学工程学院, 四川成都 610065;
2 四川大学电子信息学院, 四川成都 610065;
3 四川大学高分子材料工程国家重点实验室, 四川成都 610065

收稿日期:2017-05-02 修回日期:2017-05-10 出版日期:2018-01-05 发布日期:2018-01-05
通讯作者: 谢锐,教授,研究方向为膜科学与技术。
作者简介:武文(1991-),男,硕士研究生。
基金资助:
四川省科技支撑计划子课题（2014GZ0137-3）及高分子材料工程国家重点实验室自主研究课题（sklpme2014-1-01，sklpme2016-3-07）项目。

Effect of size ratio of smart microgels gates to membrane pores on the responsibility of smart membranes

WU Wen¹, ZHU Huacheng², XIE Rui^1,3, ZHANG Lei¹, LUO Feng¹, JU Xiaojie^1,3, WANG Wei¹, LIU Zhuang¹, CHU Liangyin^1,3

1 School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China;
2 College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, Sichuan, China;
3 State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, China

Received:2017-05-02 Revised:2017-05-10 Online:2018-01-05 Published:2018-01-05

摘要/Abstract

摘要： 智能膜的响应性能是其主要性能之一。本文借助计算流体力学（CFD）模拟，以孔壁排布有聚N-异丙基丙烯酰胺（PNIPAM）智能微球的单直膜孔为模型，定量系统地考察了智能微球的响应倍数以及微球尺寸与膜孔径的匹配性对膜温度响应性能的影响规律，并通过实验验证了模拟结果的可靠性。CFD模拟结果表明，当智能开关与膜孔径的相对比值一定时，温度响应开关系数随着微球响应倍数的减小而逐渐增大。当相对比值小于0.4时，实测的温度响应开关系数与固载量100%的模拟结果相吻合；而当相对比值大于0.4时，其与固载量为67%的模拟结果相吻合。通常当相对比值在0.4～0.65之间时，智能膜可以同时获得良好的温度响应性能和稳定的渗透性能。该研究结果可望为设计和制备高性能智能膜提供理论指导和实验基础。

关键词: 智能膜, 计算流体力学, 渗透率, 聚N-异丙基丙烯酰胺, 微球开关, 温度响应开关系数

Abstract: The responsibility is one of the key properties of the smart membranes. In this paper, the effect of both the thermo-responsive factor of smart microgels and the size ratio of smart microgels to membrane pores on the responsibility of the smart membranes was quantitatively and systematically investigated using computational fluid dynamics (CFD)based on the straight single-pore model with poly (N-isopropylacrylamide) (PNIPAM) smart microgels immobilized on the wall of the pores. To investigate the accuracy of the CFD simulation results, the thermo-responsive gating coefficients of smart membranes were also experimentally measured. The CFD simulation results showed that when the size ratio of smart microgels to membrane pores was constant, the thermo-responsive gating coefficient of smart membranes increased with the decrease of the thermo-responsive factor of smart microgels. When size ratio was less than 0.4, the measured thermo-responsive gating coefficient was in accordance with the simulation results of the PNIPAM content of 100%. However, the measured results agreed with the simulation results of the PNIPAM content of 67% when the size ratio was larger than 0.4. In general, the satisfactory responsibility and stable permeability of smart membranes were achieved simultaneously when the size ratio was in the range of 0.4 to 0.65. The results will provide valuable guidelines and experimental foundation for the design and fabrication of smart membranes with high performances.

Key words: smart membrane, computational fluid dynamics, permeability, poly (N-isopropylacrylamide), smart microgels gates, thermo-responsive gating coefficient

中图分类号:

TB381

武文, 朱铧丞, 谢锐, 张磊, 骆枫, 巨晓洁, 汪伟, 刘壮, 褚良银. 智能膜开关尺寸与孔径的匹配性对膜响应性能的影响规律[J]. 化工进展, 2018, 37(01): 223-229.

WU Wen, ZHU Huacheng, XIE Rui, ZHANG Lei, LUO Feng, JU Xiaojie, WANG Wei, LIU Zhuang, CHU Liangyin. Effect of size ratio of smart microgels gates to membrane pores on the responsibility of smart membranes[J]. Chemical Industry and Engineering Progress, 2018, 37(01): 223-229.

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智能膜开关尺寸与孔径的匹配性对膜响应性能的影响规律

Effect of size ratio of smart microgels gates to membrane pores on the responsibility of smart membranes

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