中国塑料 ›› 2012, Vol. 26 ›› Issue (08): 73-76 .DOI: 10.19491/j.issn.1001-9278.2012.08.014

• 加工与应用 • 上一篇    下一篇

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

孙德 亢荣敏 于万礼 孙娅楠 李冰冰 王栋   

  1. 长春工业大学化工学院 长春工业大学化工学院 长春工业大学化工学院 长春工业大学化工学院 长春工业大学化工学院
  • 收稿日期:2012-04-05 修回日期:1900-01-01 出版日期:2012-08-26 发布日期:2012-08-26

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

De SUN Rongmin kang Wanli Yu Yanan Sun Bingbing LI Dong WANG   

  • Received:2012-04-05 Revised:1900-01-01 Online:2012-08-26 Published:2012-08-26
  • Contact: Bingbing LI

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0.2691 g/g提高至0.0991、0.1678和0.2773 g/g;加入PTFE后提高了复合膜的渗透汽化性能。

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

Abstract: 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 % 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.

Key words: polytetrafluoroethylene, polydimethylsiloxane, pervaporation, organic solution

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