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Title:Strjevanje polimera v sistemu polisulfon/N,N-dimetilacetamid/voda in njegova morfološka raznolikost
Authors:ID Kaiser, Vladimir (Author)
ID Stropnik, Črtomir (Author)
Files:.pdf Materiali_in_tehnologije_2000_Kaiser,_Stropnik_Strjevanje_polimera_v_sistemu_polisulfonN,N-dimetilacetamidvoda_in_njegova_morfoloska_raz.pdf (266,53 KB)
MD5: EC7B1E137881EA61CD16A1B25048F257
 
URL http://mit.imt.si/Revija/izvodi/mit0023/kaiser.pdf
 
Language:Slovenian
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Preučevali smo mokro fazno inverzijo ternaranega sistema polisulfon/N,N-dimetilacetamid/voda (PSf/DMA/voda) z namenom, poglobiti razumevanje mehanizma nastajanja polimernih asimetričnih poroznih membran. Morfologije presekov membran smo preučevali z vrstično elektronsko mikroskopijo, sam proces fazne inverzije pa smo opazovali z merjenjem motnosti membranotvornega sistema med procesom nastajanja membrane. Spreminjanje vsebnosti polimera v raztopini (PSf/DMA) in debeline njenega nanosa povzroči v procesu mokre fazne inverzije poleg nastanka polimernega lateksa formiranje morfološko različnih membran. Nastanejo membrane s celično, dvozvezno in krogličasto zrnatao morfologijo. Njihov nastanek lahko predstavimo s "potmi sestave" v ternarnem faznem diagramu polimer/topilo/netopilo in pojasnimo z različnimi načini fazne inverzije.
Keywords:polisulfonske asimetrične porozne membrane, mokra fazna inverzija, načini fazne inverzije, morfologija
Publication status:Published
Publication version:Version of Record
Year of publishing:2000
Number of pages:str. 151-155
Numbering:Letn. 34, št. 3/4
PID:20.500.12556/DKUM-53207 New window
ISSN:1580-2949
UDC:678.6
ISSN on article:1580-2949
COBISS.SI-ID:221866 New window
NUK URN:URN:SI:UM:DK:OPE4HNNZ
Publication date in DKUM:10.07.2015
Views:1635
Downloads:124
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Materiali in tehnologije
Shortened title:Mater. tehnol.
Publisher:Inštitut za kovinske materiale in tehnologije
ISSN:1580-2949
COBISS.SI-ID:106193664 New window

Secondary language

Language:English
Title:Solidification of polymer in system polysulfone/N,N-dimethylacetamide/water and its morphologic variety
Abstract:Wet phase inversion of a ternary system polysulfone/N,N-dimethylacetamide/water (PSf/DMA/water) was studied with intention to enhance the understanding of the mechanism of polymeric asymmetric porous membranes formation. Membranes cross-sections were investigated with scanning electron microscopy and the phase inversion process was observed by turbidity measurement of membrane forming system during the membrane forming process. Changing of polymer content in a PSf/DMA solution and thickness of cast layer cause the formation of a polymer latex and morphologically different membranes during the process of wet phase inversion. Membranes with cellular, bicontinuous and bead-like morphology are formed. Their formation can be presented in ternary phase diagram polymer/solvent/nonsolvent by "composition paths" and explained by different modes of phase inversion.
Keywords:polysulfone asymmetric porous membranes, wet phase inversion, formation mechanism, modes of phase inversion, morphology


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