The chlorination mechanism of integrally asymmetric cellulose triacetate (CTA)-based and thin film composite polyamide-based forward osmosis membrane

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• 作者：Thi Phuong Nga Nguyen ; Byung-Moon Jun ; Young-Nam Kwon ; ^{kwonyn@unist.ac.kr}
• 关键词：Forward osmosis membrane ; Cellulose acetate ; Polyamide ; Chlorination ; ToF-SIMS
• 刊名：Journal of Membrane Science
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：523
• 期：Complete
• 页码：111-121
• 全文大小：2110 K
• 卷排序：523

文摘

Study of the chlorination of CTA-based and TFC PA-based FO membranes. By ToF-SIMS, chlorine first reacts with acetyl/acetate group, then pyranose ring. High chlorine dosage cleaved the pyranose ring, led to loss of membrane selectivity. PA-based membrane was more vulnerable to acidic chlorine than CTA-based membranes. Alkaline chlorine solution insignificantly affected both FO membrane types.