高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (4): 690-696.doi: 10.7503/cjcu20190654

• 庆祝《高等学校化学学报》复刊40周年专栏 • 上一篇    下一篇

磺化纤维素纳米纤维多孔膜支撑的高通量纳滤膜的制备及脱盐性能

孔金凤1,朱玉长2,*(),靳健1,2,*()   

  1. 1. 苏州大学材料与化学化工学部, 苏州 215123
    2. 中国科学院苏州纳米技术与纳米仿生研究所, 苏州 215123
  • 收稿日期:2019-12-11 出版日期:2020-04-10 发布日期:2020-02-17
  • 通讯作者: 朱玉长,靳健 E-mail:yzzhu2011@sinano.ac.cn;jjin@suda.edu.cn
  • 基金资助:
    国家自然科学基金杰出青年基金(51625306);国家自然科学基金青年科学基金(51603229)

Sulfonated Cellulose Nanofibers Film Supported Nanofiltration Membrane for High-flux and High-rejection Desalination

KONG Jinfeng1,ZHU Yuzhang2,*(),JIN Jian1,2,*()   

  1. 1. College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
    2. Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
  • Received:2019-12-11 Online:2020-04-10 Published:2020-02-17
  • Contact: Yuzhang ZHU,Jian JIN E-mail:yzzhu2011@sinano.ac.cn;jjin@suda.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundcation for Distinguished Young Scholars of China(51625306);the National Natural Science Foundcation for Young Scientists of China(51603229)

摘要:

以细菌纤维素为原材料, 先后通过NaIO4和NaHSO3氧化还原反应制备了表面部分磺酸化的细菌纤维素(SBC)纳米纤维. 利用SBC纳米纤维多孔膜替代传统的超滤膜作为支撑底膜, 结合界面聚合反应调控制得复合纳滤膜, 并对其纳滤性能进行研究. 结果表明, 制备得到了对Na2SO4和MgSO4具有高截留率(>96%)和超高分离通量(>320 L·m -2·h -1·MPa -1)的新型纳滤膜.

关键词: 磺化细菌纤维素纳米纤维, 纳滤膜, 脱盐, 高通量

Abstract:

Sulfonated bacterial cellulose(SBC) nanofibers were prepared via oxidation-reduction reaction of NaIO4 and NaHSO3. Using this SBC nanofibers film as a new support porous membrane, high performance nanofiltration membrane with highly crumpled polyamide selective layer was prepared via interfacial polymerization between piperazine(PIP) and trimesoyl chloride(TMC). This novel nanofiltration membrane exhibits a superior desalination performance with a high rejection rate of 98.6% and a high permeance of 320 L·m -2·h -1·MPa -1 to 1 g/L Na2SO4. The new nanofiltration membrane has a wide application prospect in desalination.

Key words: Sulfonated bacterial cellulose nanofiber, Nanofiltration membrane, Desalination, High flux

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