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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:
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
NUK URN:
URN:SI:UM:DK:BFLVHNV7
Views:
733
Downloads:
25
Metadata:
Categories:
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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
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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