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首页> 外文期刊>RSC Advances >Surface modification of polyamide composite membranes by corona air plasma for gas separation applications
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Surface modification of polyamide composite membranes by corona air plasma for gas separation applications

机译：用于气体分离应用的电晕空气等离子体聚酰胺复合膜的表面改性

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摘要

In this study, dual-layer polyamide 6/polyethersulfone (PA6/PES) composite membranes were prepared via the phase inversion technique and corona air plasma was employed to modify the membrane surface in order to improve the gas separation performance. The effect of corona treatment parameters like exposure time and input power on the membrane surface properties, morphology and separation performance was investigated. The gas separation performance of the membranes before and after the corona treatment was evaluated by permeation measurements for CO2, O-2 and N-2 gases. The FTIR-ATR, SEM, AFM and contact angle analyses were used to characterize the untreated and corona treated membranes. The FTIR-ATR and contact angle results indicated that the corona treatment introduced polar groups on the membrane surface and led to significant enhancement in the membrane polarity, hydrophilicity and wettability. The gas permeation results revealed that the permeability and selectivity of the modified membranes were changed dramatically due to surface ablation and formation of polar groups depending on the corona treatment conditions. An increase in corona treatment time and input power resulted in higher gas permeability, however corona modification at high power and longer exposure time led to a membrane with low gas selectivity.
机译：在该研究中，通过相反转技术制备双层聚酰胺6 /聚醚砜（PA6 / PES）复合膜，并且使用电晕空气等离子体来改变膜表面以改善气体分离性能。研究了电晕处理参数等曝光时间和输入功率对膜表面性质，形态和分离性能的影响。通过CO 2，O-2和N-2气体的渗透测量评估了电晕处理前后膜的气体分离性能。 FTIR-ATR，SEM，AFM和接触角分析用于表征未处理和电晕处理的膜。 FTIR-ATR和接触角结果表明电晕处理在膜表面上引入极性基团，并导致膜极性，亲水性和润湿性的显着增强。燃气渗透结果表明，由于电晕处理条件，由于表面烧蚀和极性基团的表面烧蚀和形成，改性膜的渗透率和选择性发生显着变化。电晕处理时间和输入功率的增加导致较高的透气性，然而，高功率和较长的曝光时间导致具有低气体选择性的膜。

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  • 来源
    《RSC Advances》 |2015年第25期|共13页
  • 作者

    Zarshenas Kiyoumars; Raisi Ahmadreza; Aroujalian Abdolreza;

  • 作者单位

    Amirkabir Univ Technol Tehran Polytech Dept Chem Engn Tehran Iran;

    Amirkabir Univ Technol Tehran Polytech Food Proc Engn &

    Biotechnol Res Ctr Tehran Iran;

    Amirkabir Univ Technol Tehran Polytech Food Proc Engn &

    Biotechnol Res Ctr Tehran Iran;

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  • 正文语种 eng
  • 中图分类 化学;
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