• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Gas-separation behavior of poly(ether sulfone)-poly(ethylene glycol) blend membranes
【24h】

Gas-separation behavior of poly(ether sulfone)-poly(ethylene glycol) blend membranes

机译：聚（醚砜）的气体分离行为 - 聚（乙二醇）混合膜

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

Poly(ether sulfone) (PES), because of its low chain mobility and high gas selectivity, was selected as a gas-separation membrane. Because poly(ethylene glycol) (PEG) contains polar ether groups favorable for carbon dioxide (CO2) capture, we investigated the effects of PEG on the CO2/CH4 and CO2/N-2 separation properties of PES-PEG blend membranes. PEG with different molecular weights (4000, 6000, and 10,000) and concentrations of up 30 wt % was added to PES. Scanning electron microscopy and wide-angle X-ray diffraction analyses on the blends confirmed the uniformity and dense surfaces of the membranes and no changes in the crystallinity, respectively. Fourier transform infrared spectra indicated good interactions between the PEG and PES segments. Gas permeation tests showed that with increasing PEG molecular weight, its weight fraction permeability of CH4 and CO2 increased, whereas the permeability of O-2 and N-2 decreased. The best composition of PES-PEG was a 70/30 ratio; with this composition, the selectivities of CO2/N-2 and CO2/CH4 were enhanced by 64 and 14%, respectively, compared to that of the pure membrane. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46845.
机译：由于其低链条迁移率和高气体选择性，聚（醚砜）（PE）被选为气体分离膜。因为聚（乙二醇）（PEG）包含二氧化碳（CO 2）捕获有利极性醚基团中，我们调查对CO 2 / CH 4和PES-PEG共混膜的CO 2 / N-2分离性能PEG的影响。在PE中加入不同分子量（4000,6000和10,000）的PEG和浓度30wt％的浓度。扫描电子显微镜和共混物上的广角X射线衍射分析证实了膜的均匀性和致密表面，分别没有变化。傅里叶变换红外光谱表明PEG和PES段之间的良好相互作用。气体渗透试验表明，随着PEG分子量的增加，CH 4和CO 2的重量分数渗透性增加，而O-2和N-2的渗透率降低。 PES-PEG的最佳组成为70/30比例;通过该组合物，与纯膜的相比，CO 2 / N-2和CO 2 / CH4的选择性分别增强了64和14％。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,46845。

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