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首页> 外文期刊>Polymer Engineering and Science >Acetic Acid/Water Separation by Pervaporation With Silica Filled PDMS Membrane
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Acetic Acid/Water Separation by Pervaporation With Silica Filled PDMS Membrane

机译：硅胶填充PDMS膜全蒸发分离乙酸/水

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摘要

Silica-filled polydimethylsiloxane (PDMS) composite membranes are prepared on a polytetrafluoroethylene support structure. The structure and the performance of the membranes are characterized by scanning electron microscope, Fourier transform infrared spectroscopy, X-ray diffraction, and thermogravimetry. The pervaporation process for acetic/water separation is performed within the PDMS membranes. The vulcanization temperature was found to have a great influence on the separation performance of the membrane. The addition of silica can significantly improve the pervaporation flux and enhance the thermal stability of the membrane. With an increase in the feed temperature, selectivity decreases and permeation flux increases. Performed with a pure PDMS membrane vulcanized at 30° C, the separation factor at first will increase, then decrease when the feed flow rate was increased from 14 to 38 L . h^sup -1^. The maximum separation factor is achieved when the feed flow rate is 26 L . h^sup -1^. [PUBLICATION ABSTRACT]
机译：在聚四氟乙烯支撑结构上制备二氧化硅填充的聚二甲基硅氧烷（PDMS）复合膜。膜的结构和性能通过扫描电子显微镜，傅立叶变换红外光谱，X射线衍射和热重分析来表征。用于乙酸/水分离的全蒸发过程在PDMS膜内进行。发现硫化温度对膜的分离性能有很大的影响。二氧化硅的添加可以显着改善全蒸发通量并增强膜的热稳定性。随着进料温度的升高，选择性降低并且渗透通量增加。用在30°C硫化的纯PDMS膜进行分离，首先分离系数会增大，然后当进料流量从14 L增加到38 L时，分离系数会减小。 h ^ sup -1 ^。当进料流量为26 L时，可获得最大分离系数。 h ^ sup -1 ^。 [出版物摘要]

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  • 来源
    《Polymer Engineering and Science》 |2011年第5期|p.819-825|共7页
  • 作者

    Housheng Hong Longxiang Chen Qingwen Zhang Zheran Zhang;

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    Housheng Hong, Longxiang Chen, Qingwen Zhang, Zheran ZhangState Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology,Nanjing 210009, People's Republic of ChinaCorrespondence to: Housheng Hong: e-mail: hh.sshiyanshi@163.comContract grant sponsor: State Key Development Program for Basic Research of China (973 Program), contract grant number: 2007CB714305, contract grant sponsor: Stale Key Laboratory of Materials-Oriented Chemical Engineering.DOI 10.1002/pen.21894Published online in Wiley Online Library (wileyonlinelibrary.com).© 2001 Society of Plastics Engineers,;

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