Lee, HJ Won, J Park, HC Lee, H Kang, YS 2024-01-21T13:33:59Z 2024-01-21T13:33:59Z 2021-09-05 2000-09-15 0376-7388 https://pubs.kist.re.kr/handle/201004/141095 The imidization effect of a poly(amic acid) dope solution on membrane formation has been investigated. Poly(amic acid) solution in N-methyl-2-pyrrolidione has been thermally imidized at 120 degrees C at different curing times. The degree of imidization was determined by infrared spectroscopy. The solution properties have been studied as a function of concentration and curing time by dynamic light scattering. The quality of a solvent changed from good to poor with increasing imidization of poly(amic acid). The reduced polymer-solvent interaction diminishes the membrane formation time. The morphology of a membrane was able to be controlled by the characteristics of the dope solution. (C) 2000 Elsevier Science B.V. All rights reserved. English ELSEVIER SCIENCE BV SEPARATION ACETATE AIR Effect of poly(amic acid) imidization on solution characteristics and membrane morphology Article 10.1016/S0376-7388(00)00459-2 1 JOURNAL OF MEMBRANE SCIENCE, v.178, no.1-2, pp.35 - 41 JOURNAL OF MEMBRANE SCIENCE 178 1-2 35 41 scie scopus 000089267300004 2-s2.0-0343878177 Engineering, Chemical Polymer Science Engineering Polymer Science Article SEPARATION ACETATE AIR poly(amic acid) imidization gas separation membrane light scattering