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/(m^2×h),截留率达87.67%.
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%（ω）, 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/（m^2·h）, and the rejection rate 87.67%.
出处
《过程工程学报》
CAS
CSCD
北大核心
2016年第2期356-360,共5页
The Chinese Journal of Process Engineering
基金
国家自然科学基金资助项目(编号:51272239)
山西省留学基金资助项目(编号:2014-重点6)
关键词
醋酸纤维素
混合溶剂
膜分离
液固相转化法
致孔剂
cellulose acetate
mixed solvent
membrane separation
liquid?solid phase inversion method
porogen
作者简介
刘方（1991-），女，山西省大同市人，硕士研究生，研究方向为有机膜的制备与性能研究；通讯联系人:李巧玲，E-mail：qiaolingl@163．com．
