Phase separation phenomena during the formation of asymmetric membranes

Autor:	M.H.V. Mulder, D.M. Koenhen, C.A. Smolders
Přispěvatelé:	University of Twente
Rok vydání:	1977
Předmět:	Polymers and Plastics Chemistry Nucleation IR-70801 General Chemistry Asymmetric membranes Surfaces Coatings and Films law.invention Crystallography Membrane Chemical engineering law Phase (matter) Materials Chemistry Crystallization
Zdroj:	Journal of applied polymer science, 21(1), 199-215. Wiley
ISSN:	1097-4628 0021-8995
Popis:	The formation of membranes from two systems has been studied. In the system polyurethane-dimethylformamide-water, the mechanism for the formation of the sponge-like structure proves to be a liquid-liquid phase separation with nucleation and growth of the diluted phase. This mechanism has been confirmed for the system modified polystyrene-polyisoprene-polystyrene/o-dichlorobenzene/(methanol-water). Crystallization and gelation is discussed. The membranes prepared showed hyperfiltration activity. The mechanism proposed here is believed to be valid for other systems, too.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64ac07acf015430795e9dcf4f86803b0 https://doi.org/10.1002/app.1977.070210118 Zobrazit plný text záznamu Plný text