Chin. J. Process Eng. ›› 2016, Vol. 16 ›› Issue (2): 356-360.DOI: 10.12034/j.issn.1009-606X.215327
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LIU Fang LI Qiao-ling
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刘方 李巧玲
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Abstract: Cellulose acetate (CA) membrane was prepared by liquid-solid phase inversion method with cellulose acetate, acetone, N-methylpyrrolidone (NMP) and polyethylene glycol 400 (PEG-400) as raw materials. The structure and morphology of CA membrane were characterized. At room temperature, the prepared CA membrane was used to treat deionized water and 500 mg/L polyethylene glycol 600 under the pressure of 0.1 MPa in its water flux and rejection rate, respectively. The effects of mixed solvent content, reaction temperature and PEG-400 content on the separation properties of membrane were examined. The results showed that under the conditions of NMP and PEG-400 contents of 60% and 6%(w), and reaction temperature of 60℃, the prepared CA membrane surface was smooth and the pore size distribution uniform, its water flux was 212.87 L/(m2×h), and the rejection rate 87.67%.
Key words: cellulose acetate, mixed solvent, membrane separation, liquid-solid phase inversion method, porogen
摘要: 以醋酸纤维素、丙酮、N-甲基吡咯烷酮(NMP)和聚乙二醇400(PEG-400)为原料,采用相转化法制备醋酸纤维素膜,对其结构和形貌进行了表征;在室温、操作压力0.1 MPa下,用去离子水和500 mg/L PEG-600溶液分别测定膜的水通量和截留率,考察了混合溶剂中丙酮和NMP含量、反应温度和致孔剂PEG-400含量对醋酸纤维素膜性能的影响. 结果表明,NMP含量60%(w)、丙酮含量22.5%(w)、反应温度60℃及PEG-400含量6%(w)条件下,所制醋酸纤维素膜表面光滑,孔径分布均匀,水通量达212.87 L/(m2×h),截留率达87.67%.
关键词: 醋酸纤维素, 混合溶剂, 膜分离, 液固相转化法, 致孔剂
CLC Number:
TQ028
LIU Fang LI Qiao-ling. Preparation and Performance of Cellulose Acetate Membrane with Mixed Solvents[J]. Chin. J. Process Eng., 2016, 16(2): 356-360.
刘方 李巧玲. 混合溶剂制备醋酸纤维素膜及其性能[J]. 过程工程学报, 2016, 16(2): 356-360.
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URL: https://www.jproeng.com/EN/10.12034/j.issn.1009-606X.215327
https://www.jproeng.com/EN/Y2016/V16/I2/356