PTFE对PDMS复合膜在低浓度有机物水溶液中渗透汽化性能的影响  

Effect of PTFE on Pervaporation of PDMS Composite Membrane in Dilute Organic Solution

作　　者：孙德[1] 亢荣敏[1] 于万礼[1] 孙娅楠[1] 李冰冰[1] 王栋[2] 

机构地区：[1]长春工业大学化学工程学院,吉林长春130012 [2]中国石化中原油田分公司采油工程技术研究院低渗油藏研究所,河南濮阳457001

出　　处：《中国塑料》2012年第8期73-76,共4页China Plastics

基　　金：吉林省科技厅自然科学基金(201115144)

摘　　要：制备了聚四氟乙烯(PTFE)超细粉体填充聚二甲基硅氧烷(PDMS)复合膜,通过扫描电子显微镜、傅里叶变换红外光谱仪、热失重分析仪等测试仪器对复合膜进行了表征,利用低浓度有机物(乙醇、丙酮、正丙醇)水溶液体系进行渗透汽化,并由单组分溶解实验计算了有机物(乙醇、丙酮、正丙醇)在复合膜中的溶解度。结果表明,PTFE含量由0增加至10%(质量分数,下同)时,复合膜的表面积及热稳定性得到了提高,有机物乙醇、丙酮、正丙醇在复合膜中的溶解度分别由0.0923、0.1589和0.2691g/g提高至0.0991、0.1678和0.2773g/g;加入PTFE后提高了复合膜的渗透汽化性能。A novel composite membrane of micron PTFE powder filled PDMS was prepared for the pervaporation of organic components （ethanol, 1-propanol and acetone） from water. The physical structure of this kind of composite membrane was investigated by SEM, FTIR and TG. The solubility for organic components （ethanol, 1-propanol and acetone） in the composite membrane was achieved. The results showed that the addition of PTFE from 0 to 10 G in PDMS membrane increased the surface area and thermal stability of PDMS membrane as well as the solubility of above organic components from 0. 0923 to 0. 0991 g/g, from 0. 1589 to 0. 1678 g/g and from 0. 2691 to 0. 2773 g/g respectively, and also the pervaporation of this PDMS membrane.

关 键 词：聚四氟乙烯 聚二甲基硅氧烷 渗透汽化性能 有机物水溶液 

分 类 号：TQ028.8[化学工程]