• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >The preparation of polyamide/polyacrylonitrile thin film composite hollow fiber membranes for dehydration of ethanol mixtures
【24h】

The preparation of polyamide/polyacrylonitrile thin film composite hollow fiber membranes for dehydration of ethanol mixtures

机译：聚酰胺/聚丙烯腈薄膜复合中空纤维膜的制备乙醇混合物脱水

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, Polyamide (PA)/polyacrylonitrile (PAN) thin-film composite (TFC) hollow fiber membranes were fabricated to investigate the dehydration performances of ethanol mixtures by pervaporation. Amine monomers (ethylenediamine (EDA), 1, 6-hexanediamine (HDA), diethylenetriamine (DETA), and tetraethylenepentamine (TEPA)) with difference number of functional groups or chain length were selected to react with trimesoyl chloride (TMC) to prepare a PA dense thin-film onto the surface of asymmetric PAN hollow fiber membranes by way of interfacial polymerization. Attenuated total reflection infrared spectroscopy (FTIR-ATR), scanning electron microscope (SEM), atomic force microscope (AFM), light transmission, contact angle and positron annihilation spectroscopy (PAS) were used to characterize the physicochemical properties, morphologies and microstructure of the PA thin layer. The pervaporation performances of aqueous ethanol solution showed the permeation flux decreased while water content in permeate increased with increasing number of amine groups. The effects of monomer concentration and reaction time on the pervaporation performances of aqueous ethanol solution through TEPA-TMC/PAN TFC hollow fiber membranes were also investigated. A 342.0 +/- 22.3 g/m(2) h permeation flux and 97.6 0.3 wt.% water content in permeate were obtained for the pervaporation of 90 wt.% aqueous ethanol solution at 25 degrees C through the PA/PAN TFC hollow fiber membrane which was fabricated by immersing PAN hollow fiber membrane into 2 wt.% TEPA aqueous solution for 1 min and then contacting 1 wt.% TMC solution for 0.5 min. (C) 2017 Elsevier B.V. All rights reserved.
机译：在该研究中，制备聚酰胺（PA）/聚丙烯腈（PAN）薄膜复合材料（TFC）中空纤维膜，以研究通过渗透蒸发的乙醇混合物的脱水性能。选择胺单体（乙二胺（EDA），1,6-己二胺（HDA），二亚乙基三胺（DETA）和四亚乙基二胺（TEPA）），差异是官能团或链长的差异数，以与Timesoyl氯化物（TMC）反应以制备PA致密薄膜通过界面聚合通过界面聚合到不对称盘中空纤维膜表面上。衰减的总反射红外光谱（FTIR-ATR），扫描电子显微镜（SEM），原子力显微镜（AFM），透光，接触角和正电子湮灭光谱（PAS）用于表征物理化学性质，形态和微观结构PA薄层。乙醇水溶液的渗透性表现表明渗透磁通量下降，而渗透物中的含水量随着越来越多的胺基而增加。还研究了单体浓度和反应时间对通过TEPA-TMC / PAN TFC中空纤维膜进行乙醇溶液的渗透性性能的影响。 342.0 +/- 22.3g / m（2）H渗透通量和97.6 0.3重量％。获得渗透物中的渗透物中的含水量为90重量％。通过PA / PAN TFC中空纤维在25℃下的乙醇水溶液溶液获得渗透通过将PAN中空纤维膜浸入2重量％的膜中制造的膜1分钟，然后接触1wt.％TMC溶液0.5分钟。 （c）2017 Elsevier B.v.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号