diplomsko delo
Blažka Črešnar (Avtor), Peter Krajnc (Mentor), Muzafera Paljevac (Komentor)

Povzetek

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 $300-1000 mum$. Z infrardečo spektroskopijo smo preverili kemijsko sestavo membran, z vrstičnim elektronskim mikroskopom pa morfologijo sintetiziranih membran.

Ključne besede

diplomska dela;radikalska polimerizacija;tiol-en reakcija;membrane;emulzija z visokim deležem interne faze (HIP emulzija);tetratiol;divinil adipat;trimetilolpropan triakrilat;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.11 - Diplomsko delo
Organizacija: UM FNM - Fakulteta za naravoslovje in matematiko
Založnik: [B. Črešnar]
UDK: 544.725(043.2)
COBISS: 22579720 Povezava se bo odprla v novem oknu
Št. ogledov: 1130
Št. prenosov: 81
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: ǂThe ǂinfluence of thiol/alkene ratio on the properties of polymeric membranes
Sekundarni povzetek: 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.
Sekundarne ključne besede: theses;radical polymerisation;thiol-ene reaction;membranes;high internal phase emulsion (HIP emulsion);tetrathiol;divinyl adipate;trimethylolpropane triacrylate;
Vrsta dela (COBISS): Diplomsko delo
Komentar na gradivo: Univ. v Mariboru, Fak. za naravoslovje in matematiko, Oddelek za kemijo
Strani: XII, 41 f., 16 f. pril.
ID: 9153740