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Title:Ternarni sistem polisulfon-dimetilacetatamid : voda; formiranje membrane po mokrem postopku fazne inverzije
Authors:Kaiser, Vladimir (Author)
Stropnik, Črtomir (Author)
Files:URL http://www.dlib.si/details/URN:NBN:SI:doc-58AEY8XY
 
Language:Slovenian
Work type:Not categorized (r6)
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract: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.
Keywords:polimerne asimetrične porozne membrane, polisulfon, mokra fazna inverzija, mehanizem nastanka
Year of publishing:1999
Publisher:Inštitut za kovinske materiale in tehnologije
Number of pages:str. 215-218
Numbering:Letn. 33, št. 3/4
UDC:678.6
ISSN on article:1318-0010
COBISS_ID:157098 Link is opened in a new window
NUK URN:URN:SI:UM:DK:BFLVHNV7
Views:733
Downloads:25
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Categories:Misc.
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Record is a part of a journal

Title:Kovine zlitine tehnologije
Shortened title:Kovine zlit. tehnol.
Publisher:Inštitut za kovinske materiale in tehnologije
ISSN:1318-0010
COBISS.SI-ID:31742209 New window

Secondary language

Language:English
Title:Ternary system poly(sulphone)dimethylacetatamide : water; formation of membrane by wet phase inversion
Abstract: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.
Keywords:polymeric asymmetric porous membranes, polysulphone, wet phase inversion, formation mechanism


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