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Title:Membranes from polysulfone/N,N-dimethylacetamide/water system : structure and water flux
Authors:ID Kaiser, Vladimir (Author)
ID Stropnik, Črtomir (Author)
Files:.pdf Acta_Chimica_Slovenica_2000_Kaiser,_Stropnik_Membranes_from_polysulfoneN,N-dimethylacetamidewater_system_structure_and_water_flux.pdf (112,47 KB)
MD5: C448CD54C6EE862492F9A6148886F46C
PID: 20.500.12556/dkum/9bbb6df9-d194-484e-b982-2368b8c48b83
 
URL http://acta-arhiv.chem-soc.si/47/47-2-205.pdf
 
Language:English
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Polymeric membranes were prepared by the wet-phase separation method from solutions of different contents of polysulfone in N,N-dimethylacetamide; solutions were cast in different thickness before immersion into the pure water coagulation bath. Two main processes take place during the formation of membranes: nucleation and growth of the polymer lean phase with subsequent solidification of the polymer rich phase, and the formation of channels, macrovoids and mega-macrovoids. By the first process a cellular structure is formed whilst the second process connects the cells by opening the space between them. The degree of interconnectedness is an additional factor that affects the pure water flux. By changing the cast solution compositions and/or their cast thickness the interconnectedness of the cells can be controlled.
Keywords:chemical technology, organic technology, polymer membranes, membrane preparation, wet phase inversion, polymers, polysulphon
Publication status:Published
Publication version:Version of Record
Year of publishing:2000
Number of pages:str. 205-213
Numbering:Letn. 47, št. 2
PID:20.500.12556/DKUM-67462 New window
ISSN:1318-0207
UDC:678.6.66.081.6
ISSN on article:1318-0207
COBISS.SI-ID:22323973 New window
NUK URN:URN:SI:UM:DK:JCLYLECW
Publication date in DKUM:18.08.2017
Views:1604
Downloads:123
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
KAISER, Vladimir and STROPNIK, Črtomir, 2000, Membranes from polysulfone/N,N-dimethylacetamide/water system : structure and water flux. Acta Chimica Slovenica [online]. 2000. Vol. 47, no. 2, p. 205–213. [Accessed 1 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=67462
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Record is a part of a journal

Title:Acta Chimica Slovenica
Shortened title:Acta Chim. Slov.
Publisher:Slovensko kemijsko društvo
ISSN:1318-0207
COBISS.SI-ID:14086149 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:18.08.2017

Secondary language

Language:Slovenian
Title:Membrane sistema polisulfon/N,N-dimetilacetamid/voda : struktura in vodni pretok
Abstract:Polimerne membrane smo pripravili z metodo mokre fazne inverzije iz raztopin z različno vsebnostjo polisulfona v N,N-dimetilacetamidu, spreminjali pa smo tudi debelino nanosa raztopine pred potopitvijo v koagulacijsko kopel iz čiste vode. Med formiranjem membrane sta potekala dva osnovna procesa: nukleacija in rast s polimerom revne faze s posledičnim nadaljnjim strjevanjem s polimerom bogate faze ter nastanje kanalov, makrovoidov in mega-makrovoidov. S prvim procesom nastaja celična struktura z izoliranimi in nepovezanimi celicami, medtem ko drugi proces povzroči povezovanje celic z odpiranjem praznega prostora med njimi. Stopnja takšne povezanosti celic je eden od faktorjev, ki določajo pretok čiste vode skozi membrano. S spreminjanjem sestave in/ali debeline nanosa raztopine lahko vplivamo na stopnjo povezanosti celic.
Keywords:kemijska tehnologija, organska tehnologija, polimerne membrane, priprava membran, mokra fazna inverzija, polimeri, polisulfon


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