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Sinteza polimerov za pripravo membran : poročilo o delu za leto 1991
Stropnik, Črtomir ; Krajnčič, Božidar
Izvedli smo vrsto turbidimetričnih titracij z namenom izdelave segmenta binodale v ternarnem faznem diagramu za sisteme polimer (celulozni acetat-CA, polisulfon-PSf) - topilo (aceton, N, ...N-dimetilacetamid, N, N-dimetilformamid) - netopiplo (voda, etanol, l-propanol). S spremembo topila reakcijske zmesi, čistosti izhodnih monomerov in načina odstranjevanja pri reakciji polikondenzacije sproščene HCl, smo poskušali doseči čim večjo molekulsko maso sintetiziranega polimera poli-(tereftaloilimino-1,4-fenilhidrazida)-PTIFH. Doseženo molekulsko maso smo določili z določitvijo mejnega viskoznega števila. Iz materialov CA, PSf in PTIFH smo izdelali vrsto ultrafiltracijskih asimetričnih poroznih membran in jih karakterizirali z njihovimi mehanskimi lastnostmi in permeabilnostjo za deionizirano vodo. Za vse tri materiale smo naredili posnetke membran na rasterskem elektronskem mikroskopu.
Type of material - research report
Publication and manufacture - Maribor : Tehniška fakulteta, 1991
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