20.500.12556/DKUM-60674 Vpliv razmerja tiol/alken na lastnosti polimernih membran The influence of thiol/alkene ratio on the properties of polymeric membranes, Namen diplomske naloge je bil pripraviti porozne polimerne membrane iz pentaeritritol tetrakis(3-merkaptopropionata) in trimetilolpropan triakrilata ter trimetilolpropan triakrilata in divinil adipata. Membrane smo pripravili tako, da smo fotopolimerizirali kontinuirno fazo emulzije z visokim deležem interne faze (HIP emulzije), kjer kontinuirno fazo predstavlja monomerna mešanica, interno fazo pa vodna raztopina kalcijevega heksahidrata. HIP emulzijo smo pri uporabi pentaeritritol tetrakis(3-merkaptopropionata) stabilizirali s surfaktantom Pluronic, pri uporabi trimetilolpropan triakrilata pa s surfaktantom Span 65. Stabilno HIP emulzijo z določeno kemijsko sestavo smo nato s pomočjo posebnih »nožev« različnih debelin nanesli na stekleno ploščo in v UV-komori izvedli polimerizacijo. Nastale so porozne poliHIPE membrane z debelinami 300–1000 μm. Z infrardečo spektroskopijo smo preverili kemijsko sestavo membran, z vrstičnim elektronskim mikroskopom pa morfologijo sintetiziranih membran. The purpose of the graduation thesis was to prepare porous polymeric membranes from pentaerythritol tetrakis(3-mercaptopropionate) and trimethylolpropane triacrylate; trimethylolpropane triacrylate and divinyl adipate. We prepared membranes by photopolymerisation of the continuous phase of a high internal phase emulsion (HIP emulsion), where the continuous phase is represented by the monomer mixture and the internal phase by the aqueous solution of calcium hexahydrate. In the case of pentaerythritol tetrakis(3-mercaptopropionate), HIP emulsion was stabilised with the surfactant Pluronic, and in the case of trimethylolpropane triacrylate with the surfactant Span 65. Afterwards, we applied stable HIP emulsion with a specific chemical composition on a glass plate using special “knives” of different thicknesses and performed polymerisation in UV chamber. PolyHIPE porous membranes with thicknesses of 300-1000 micrometers were formed. By using infrared spectroscopy, we checked the chemical structure of membranes, and by using scanning electron microscope, we checked the morphology of the synthesized membranes. Radikalska polimerizacija tiol-en reakcija membrane emulzija z visokim deležem interne faze (HIP emulzija) tetratiol divinil adipat trimetilolpropan triakrilat Radical polymerisation thiol-ene reaction membranes high internal phase emulsion (HIP emulsion) tetrathiol divinyl adipate trimethylolpropane triacrylate true true false [B. Črešnar] Slovenski jezik Angleški jezik Diplomsko delo 2016-06-29 10:06:06 2016-09-26 13:09:34 2022-06-24 03:14:29 2019-07-11 11:54:43 2016 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 544.725(043.2) 22579720 URN:SI:UM:DK:YBRBDEZR UN_Cresnar_Blazka_2016.pdf UN_Cresnar_Blazka_2016.pdf 1 EA01D2BEF1E39733A6600B56700314CC c38ba468cdff75b63dae8f82a919e71926b0b412478c2a6cf3724089fc9c0272 ceec29c6-7c0c-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=95721 Fakulteta za naravoslovje in matematiko 0 0 0