Characterization of pore size distribution (PSD) in cellulose triacetate (CTA) and polyamide (PA) thin active layers by positron annihilation lifetime spectroscopy (PALS) and fractional rejection (FR) method

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• 作者：Sung-Jo Kim^a ; Seungho Kook^a ; Brian E. O'Rourke^b ; Jinwoo Lee^a ; Moonhyun Hwang^a ; ^c ; Yoshinori Kobayashi^b ; Ryoichi Suzuki^b ; In S. Kim^a ; ^c ; ^{iskim@gist.ac.kr}
• 关键词：Active layer ; Fractional rejection (FR) ; Pore size distribution (PSD) ; Positron annihilation lifetime spectroscopy (PALS)
• 刊名：Journal of Membrane Science
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：527
• 期：Complete
• 页码：143-151
• 全文大小：761 K
• 卷排序：527

文摘

This research provide first suggestion about the active layer pore size and structure of FO membranes. Both FO membranes are consisted of active layer with larger free-volume than commercial SWRO and NF membranes. The mean pore radius determined by FR method was smaller than the PALS due to hydraulic compression. Both PALS and the FR method can be utilized to investigate the dense active layer.