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Layer Structure of Composite Membranes for Water Filtration Elucidated by Variable-energy Positron Annihilation

机译:变能量正电子An灭阐明了用于水过滤的复合膜的层结构

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摘要

Commercial composite membranes for water purification were studied by means of the variable-energy positron annihilation γ-ray technique. The positron incident energy E dependence of R parameter (3γ/2γ ratio) analyzed from positron annihilation γ-ray spectra revealed the layer structure consisting of a dense top layer and a porous substrate for the membranes. Thickness of the dense layer for each membrane was evaluated from the R(E) based on a positron implantation stopping profile.
机译:利用变能正电子an没γ射线技术研究了商用净水复合膜。由正电子ni没γ射线光谱分析得到的R参数(3γ/2γ比率)对正电子的入射能量E依赖性显示出由致密的顶层和膜的多孔性基材构成的层结构。基于正电子注入停止曲线,由R(E)评估每个膜的致密层厚度。

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  • 来源
  • 会议地点 Smolenice Castle(SK)
  • 作者单位

    National Institute of Advanced Industrial Science and Technology (AIST), Higashi, Tsukuba, Ibaraki 305-8565, Japan;

    National Institute of Advanced Industrial Science and Technology (AIST), Higashi, Tsukuba, Ibaraki 305-8565, Japan;

    National Institute of Advanced Industrial Science and Technology (AIST), Higashi, Tsukuba, Ibaraki 305-8565, Japan;

    National Institute of Advanced Industrial Science and Technology (AIST), Higashi, Tsukuba, Ibaraki 305-8565, Japan;

    National Institute of Advanced Industrial Science and Technology (AIST), Higashi, Tsukuba, Ibaraki 305-8565, Japan;

    National Institute of Advanced Industrial Science and Technology (AIST), Higashi, Tsukuba, Ibaraki 305-8565, Japan;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composite membrane; Positron annihilation; 3γ annihilation; Positron beam;

    机译:复合膜正电子ni灭; 3γan灭;正电子束;

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