Kwak, SY Kim, CK Kim, JJ 2024-01-21T19:13:21Z 2024-01-21T19:13:21Z 2021-09-05 1996-09-30 0887-6266 https://pubs.kist.re.kr/handle/201004/144298 Four reverse osmosis (RO) composite membranes, in which thin-film active layers were polyphenyl esters, were prepared by interfacial polymerization of a series of bisphenol monomers and trimesoyl chloride (TMC). An atomic force microscope (AFM) was used to investigate the surface morphology and RO experiments were carried out to measure the rejection and flux characteristics of the membranes. Correlations between the inherent chemical nature of bisphenols possessing structural variations in the middle of phenyl rings and the surface morphology/RO performance of the membranes were studied. Polarity of the connectors between two phenyl rings of bisphenols played an important role in determining the surface morphology and RO performance. Nonpolar bisphenol gave a morphology of uniform, distinct nodular corrugation and a superior RO rejection but a relatively low flux, while the polar one resulted in an irregular, ambiguous nodule structure and a high flux. The size of the bisphenol connectors was also found to be important; the smaller one was more favorable for the formation of membrane with better salt rejection, while the larger one contributed to higher flux. (C) 1996 John Wiley & Sons, Inc. English JOHN WILEY & SONS INC ATOMIC-FORCE MICROSCOPE SEAWATER Effects of bisphenol monomer structure on the surface morphology and reverse osmosis (RO) performance of thin-film-composite membranes composed of polyphenyl esters Article 1 JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, v.34, no.13, pp.2201 - 2208 JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 34 13 2201 2208 scie scopus A1996VE10700013 2-s2.0-0030243835 Polymer Science Polymer Science Article ATOMIC-FORCE MICROSCOPE SEAWATER polyphenyl ester thin-film-composite membranes structure atomic force microscopic (AFM) morphology reverse osmosis (RO) characteristics structure-morphology-performance relationships