高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (2): 396.doi: 10.7503/cjcu20150519

• 高分子化学 • 上一篇    下一篇

静电纺丝复合反渗透膜的改性制备与脱盐性能

王娇娜1,2, 尹泽芳1,2, 李从举1,2()   

  1. 1. 北京服装学院材料科学与工程学院, 北京 100029
    2. 北京市服装材料研究开发与评价重点实验室, 北京 100029
  • 收稿日期:2015-07-02 出版日期:2016-02-10 发布日期:2015-10-12
  • 作者简介:联系人简介: 李从举, 男, 教授, 主要从事纳米技术与纤维材料研究. E-mail:congjuli2014@126.com
  • 基金资助:
    北京市属高等学校高层次人才引进与培养计划项目-北京市长城学者培育计划(批准号: CIT&TCD20150306)、 北京市属高校创新能力提升计划项目(批准号: TJSHG201310012021)、 国家自然科学基金(批准号: 21274006, 51503005)、 北京服装学院科学研究青年创新基金(批准号: 2014AL-21)、 北京服装学院创新团队与优秀人才选拔与培养计划项目和北京市服装材料研究开发与评价重点实验室开放课题(批准号: 2014ZK-04)资助

Preparation and Desalination Performance of Composite Reverse Osmosis Membrane Based on Electrospinning Technology

WANG Jiaona1,2, YIN Zefang1,2, LI Congju1,2,*()   

  1. 1. College of Material Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
    2. Beijing Key Laboratory of Clothing Materials R&D and Assessment,Beijing Institute of Fashion Technology, Beijing 100029, China
  • Received:2015-07-02 Online:2016-02-10 Published:2015-10-12
  • Contact: LI Congju E-mail:congjuli2014@126.com
  • Supported by:
    † Supported by the Beijing Municipal Colleges and Universities High Level Talents Introduction and Cultivate Project-Beijing Great Wall Scholars Cultivating Plan, China(No.CIT&TCD20150306), the Beijing Municipal Colleges and Universities Innovation Ability Enhancement Project, China(No.TJSHG201310012021), the National Natural Science Foundation of China(Nos.21274006, 51503005), the Beijing Institute of Fashion Technology Science Research Youth Innovation Fund, China(No.2014AL-21), the Beijing Institute of Fashion Technology Innovation Team and Outstanding Talent Selection and Training Program of China and the Research and Development and Evaluation of Beijing Clothing Materials(No.2014ZK-04)

摘要:

利用静电纺丝技术在无纺布上制备PET纳米纤维膜, 并用交联壳聚糖对其进行改性得到壳聚糖改性纳米纤维复合膜. 以间苯二胺(MPD)和均苯三甲酰氯(TMC)为单体, 采用界面聚合法在壳聚糖改性纳米纤维复合膜的表面制备聚酰胺分离层, 得到新型静电纺丝纳米纤维基复合反渗透膜. 新型复合反渗透膜具有典型的聚酰胺复合反渗透膜的表面脊-谷结构. 从膜的表面形貌、 亲水性、 分离性能等3个方面对水相MPD溶液中阴离子表面活性剂十二烷基苯磺酸钠(SDBS)的含量对膜结构和性能的影响进行了系统研究. 结果表明, SDBS的含量对膜形态结构的均匀性和亲水性有一定影响, 且随着SDBS含量的增加, 膜的脱盐率先增大后减小, 而通量小幅度上升后, 先减小后增大, 呈现规律性变化.

关键词: 复合反渗透膜, 静电纺丝, 界面聚合, 十二烷基苯磺酸钠, 脱盐性能

Abstract:

Electrospun polyethylene terephthalate(PET) nanofibrous membranes were prepared on the non-woven cloth, then crosslinked chitosan was coated on the composite membrane to modify it. Finally interfacial polymerization was conducted using m-phenylene diamine(MPD) and 1,3,5-benzenetricarbonyl trichloride(TMC) benzene as monomers on chitosan modified nanofibrous to prepare polyamide separation layer. A new type of nanofibrous composite reverse osmosis membrane was obtained. This composite reverse osmosis membrane has typical ridge and valley structure of the typical commercial polyamide composite reverse osmosis membrane. Sodium dodecyl benzene sulfonate(SDBS) content on the properties and structure of the membrane was systematically studied from three aspects, means the film surface morphology, hydrophilicity and separation properties. The results showed that the content of SDBS had a certain effect on the uniformity and hydrophilicity of the membrane morphology. In addition, with the increase of SDBS content, membrane desalination first increases then decreases, and the flux had a small amplitude increase,then it decrease after the increase.

Key words: Composite reverse osmosis membrane, Electrospun, interfacial polymerization, Sodium dodecyl benzene sulfonate(SDBS), Desalination performance

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