扩散渗析用磺化聚醚醚酮/棒状介孔氧化硅共混膜的制备及性能研究  

Preparation and characterization of SPEEK/rod-shaped mesoporous silica composite membrane for diffusion dialysis

作　　者：张雅丽 陈晓鹏 苗继斌[1] 伍斌 葛倩倩 夏茹[1] 钱家盛[1] ZHANG Yali;CHEN Xiaopeng;MIAO Jibin;WU Bin;GE Qianqian;XIA Ru;QIAN Jiasheng(School of Chemistry&Chemical Engineering,Anhui Province Key Laboratory of Environment-Friendly Polymer Naterials,Anhui University,Hefei 230601,China)

机构地区：[1]安徽大学化学化工学院,安徽省绿色高分子材料重点实验室,合肥230601

出　　处：《膜科学与技术》2022年第6期118-124,133,共8页Membrane Science and Technology

基　　金：安徽省高等学校自然科学研究项目(KJ2020A0020)。

摘　　要：首先利用浓硫酸与聚醚醚酮(PEEK)反应得到磺化聚醚醚酮(SPEEK),然后采用改进的St9ber法成功制备了棒状介孔氧化硅(MS),通过溶液共混的方式将MS与SPEEK溶液混合制得一系列SPEEK/MS共混膜.测试了膜的基本性能与微观结构,并利用NaOH/Na_(2)WO_(4)体系的扩散渗析过程模拟了共混膜的分离性能.结果显示,在MS添加量为4%时,共混膜的分离因子最高达到34.7,而纯SPEEK膜的分离因子为13.6,说明MS的引入可显著提高膜的离子选择性,可以有效阻隔钨酸根离子(WO_(4)^(2-))的传递.Sulfonated poly ether ether ketone(SPEEK) was obtained by sulfonating poly ether ether ketone(PEEK) with concentrated sulfuric acid, and rod-shaped mesoporous silica(MS) was successfullysynthesized by modified St9 ber method. A series of SPEEK/MS composite membranes were prepared by blending MS suspension and SPEEK solution directly. The basic properties and microscopic structures of as-prepared membranes were measured. The separation performance of the composite membranes were tested by the diffusion dialysis process of NaOH/Na_(2)WO_(4)system. And results showed that the composite membrane possessed the optimal separation factor of 34.7 while the addition of MS was 4%, which was higher than that of pure SPEEK membrane(13.6).This confirmed that incorporation of MS could significantly improve the selectivity of the composite membranes and prevent the transport of the WO_(4)^(2-)ions.

关 键 词：扩散渗析 碱回收 磺化聚醚醚酮 介孔氧化硅 

分 类 号：TQ028.28[化学工程] O631[理学—高分子化学]