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Title:Poly(styrene-co-divinylbenzene-co-2-ethylhexyl)acrilate membranes with interconnected macroporous structure
Authors:Sevšek, Urška (Author)
Seifried, Silvo (Author)
Stropnik, Črtomir (Author)
Pulko, Irena (Author)
Krajnc, Peter (Author)
Files:.pdf Materiali_in_Tehnologije_2011_Sevsek_et_al._Poly(Styrene-Co-Divinylbenzene-Co-2-Ethylhexyl)Acrylate_Membranes_With_Interconnected_Macrop.pdf (668,83 KB)
MD5: 6AF1E24DCFC6D430083EF387EB7955B4
 
URL http://mit.imt.si/Revija/izvodi/mit113/sevsek.pdf
 
Language:English
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:A combination of doctor blading and emulsion templating was used to prepare macroporous poly(styrene-co-divinylbenzene-co-2-ethylhexylacrylate) and poly(styrene-co-divinylbenzene) membranes with an interconnected porous structure. Water in oil high internal phase emulsions including monomers in the oil phase were cast onto a glass plate and polymerised at elevated temperature. After purification porous polyHIPE membranes were obtained. The volume ratio of aqueous phase (75 % or 85 %) and the molar ratio of divinylbenzene (2 % or 4 %) were varied, while the addition of chlorobenzene to the oil phase influenced the viscosity of the emulsions. A comonomer, 2-ethylhexylacrylate substantially improved the flexibility of the membranes. All yielding membranes were characterized by measuring their cast thicknesses and flow densities for deionised water. Scanning electron microscopy was used to study the morphological features of the membranes.
Keywords:membrane, porous polymers, polyHIPE, emulsions
Year of publishing:2011
Number of pages:str. 247-251
Numbering:št. 3, Letn. 45
ISSN:1580-2949
UDC:678.542.428.8
ISSN on article:1580-2949
COBISS_ID:860074 New window
NUK URN:URN:SI:UM:DK:G3RRR7FY
Views:1379
Downloads:123
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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:Slovenian
Title:Poli(stiren-ko-divinilbenzen-ko-2-etilheksil)akrilatne membrane s povezano porozno strukturo
Abstract:Za pripravo makroporoznih poli(stiren-ko-divinilbenzen-ko-2-etilheksil)akrilatnih in poli(stiren-ko-divinil)benzenskih membran z odprto porozno strukturo smo uporabili kombinacijo nanosa z nožem in emulzij. Emulzije tipa voda v olju z visokim deležem notranje faze, z monomeri v oljni fazi smo nanesli na stekleno ploščo in polimerizirali pri povišani temperaturi. Po čiščenju smo pridobili porozne poliHIPE-membrane. Variirali smo volumski delež vodne faze (75 % ali 85 %) in molski delež divinilbenzena (2 % ali 4 %), medtem ko je dodajanje klorobenzena v oljno fazo vplivalo na viskoznost emulzije. Z dodatkom komonomera, 2-etilheksil akrilata so se elastične lastnosti membran bistveno izboljšale. Dobljene membrane smo okarakterizirali z merjenjem njihove končne debeline in merjenjem njihove pretočnosti za deionizirano vodo. Elektronsko vrstično mikroskopijo smo uporabili za študij morfoloških lastnosti membran.
Keywords:membrane, porozni polimeri, poliHIPE, emulzije


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