20.500.12556/DKUM-53304 Ternarni sistem polisulfon-dimetilacetatamid : voda; formiranje membrane po mokrem postopku fazne inverzije Ternary system poly(sulphone)dimethylacetatamide : water; formation of membrane by wet phase inversion Polisulfon je pomemben material za pripravo polimernih asimetričnih poroznih membran. Najširše uporabljen način njihove priprave je mokri postopek fazne inverzije ternanrnega sistema polisulfon/dimetilacetamid:voda (PSf/DMA:▫$H_2O$▫). Sistem PSf/DMA:▫$H_2O$▫ smo opazovali pri formiranju polisulfonske membrane v koagulacijski kopeli. Podobna opazovanja smo izvedli tudi v epruvetah tako, da smo dodajali netopilo (▫$H_2O$▫) v izhodno raztopino in obratno. Pridobljena spoznanja smo poskušali uporabiti pri pojasnjenvanju mehanizma nastanka polisulfonskih membran, ki jih razlagamo s "potmi sestave" v ternarnem faznem diagramu polimer/topilo:netopilo. Polysulphone is an important material for polymeric asymmetric porous membranes preparation. Commonly used mode for their preparation is the wet phase inversion of ternary system polysulphone/dimethylacetamide:water (PSf/DMA:▫$H_2O$▫). We have studied characteristics of the system PSf/DMA:▫$H_2O$▫ by formation of polysulphone membrane in the coagulation bath. In test-tubes we have made similar studies also by adding nonsolvent (▫$H_2O$▫) in initial PSfMA solution and vice-versa. By recognition that we attained we have tried to clear up PSf membrane formation mechanism, that we explained with "composition paths" in ternary phase diagram polymer/solvent:nonsolvent. polimerne asimetrične porozne membrane polisulfon mokra fazna inverzija mehanizem nastanka polymeric asymmetric porous membranes polysulphone wet phase inversion formation mechanism true false false Inštitut za kovinske materiale in tehnologije Slovenski jezik Angleški jezik Delo ni kategorizirano 2015-07-10 20:00:33 2015-07-10 20:00:33 2022-06-03 03:09:20 2019-07-11 08:06:46 1999 0 0 str. 215-218 št. 3/4 Letn. 33 1999 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 678.6 31742209 157098 1318-0010 URN:SI:UM:DK:BFLVHNV7 http://www.dlib.si/details/URN:NBN:SI:doc-58AEY8XY 1 https://dk.um.si/Dokument.php?lang=slv&id=77864 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0