20.500.12556/DKUM-67638 In situ polimerizacija glicidil metakrilata v poli(metil metakrilatu) In situ polymerization of glycidyl methacrylate in poly(methyl methacrylate) V okviru diplomske naloge smo in situ sintetizirali porozne polimerne materiale v poli(metil metakrilatnih) (PMMA) cevkah. Kot osnovo za polimer smo izbrali monomere glicidil metakrilat (GMA), metil metakrilat (MMA) in etilenglikol dimetakrilat (EGDMA). GMA smo izbrali zaradi njegove proste epoksi skupine, ki je primerna za nadaljnje funkcionalizacije z različnimi nukleofili, kot npr. amini, MMA smo izbrali zaradi njegovih dobrih mehanskih lastnosti in EGDMA zaradi njegovih vinilnih skupin, ki so nam služile kot zamreževalo. Kot prvi cilj diplomske naloge smo si zastavili sintezo poroznih poli(GMA-ko-MMA-ko-EGDMA) materialov v PMMA cevkah iz emulzij z visokim deležem notranje faze (HIP emulzij). Najprej smo naredili test polimerizacije HIP emulzije v petrijevki, ko smo uporabili fotoiniciator, in v centrifugirki, ko smo uporabili termični iniciator. V obeh primerih je emulzija lepo spolimerizirala. Ko smo eksperiment ponovili s polimerizacijo v PMMA cevkah, pa je v primeru uporabe termičnega iniciatorja cevka popokala medtem ko smo s fotopolimerizacijo dobili lepo spolimeriziran material. Vse nadaljnje eksperimente smo delali s fotoiniciatorjem. V okviru tega dela, smo želeli sintetizirati material, ki bi bil povezan s steno PMMA cevke. To nam je uspelo, vendar je material bodisi med čiščenjem bodisi med sušenjem popokal. Včasih so se razpoke pojavile v notranjosti polimera, včasih pa ob robu, kjer se je material stikal stene cevke. V nekaterih primerih je bila površina materiala gladka, v nekaterih primerih pa se je videlo, da je bila površina porozna. Kot drugi cilj smo si zastavili funkcionalizacijo poli(GMA-ko-MMA-ko-EGDMA) v cevkah. Funkcionalizacijo smo izvedli z dietilaminom in raztopino dietilamina v etanolu. Le tega smo pretakali skozi polimer in na tak način omogočili vezavo amina na epoksi skupino GMA v polimeru. Uspešnost funcionalizacije smo spremljali s FTIR analizo in elementno analizo. Vezava amina je bila uspešna. During the course of our work, porous polymer materials were prepared in situ, inside poly(methyl methacrylate) (PMMA) tubes. As a basis for the polymer material, the following monomers were selected: glycidyl methacrylate (GMA), methyl methacrylate (MMA) and ethylene glycol dimethacrylate (EGDMA). The reason as to why GMA was selected is its free epoxy group, which is suitable for further functionalization with different nucleophiles, for example amines. MMA was selected due to its positive mechanical properties and EGDMA for its vinyl groups, which served as a cross-linker for our polymer material. To start with, synthesis of porous poly(GMA-co-MMA-co-EGDMA) material containing high internal phase emulsion (HIPE) inside PMMA tubes was performed. Firstly, a polymerization test using a photoinitiator in a petri dish and a thermical initiator using polypropylene molds was conducted. The results gathered from both initiation methods were promising, as the emulsions polymerized nicely in both cases. Upon further investigation, negative effects of thermical initiator were discovered, as the PMMA tubes cracked during the proccess. Therefore, we proceeded with photoinitiator only. A major part of this research was to determine whether we could produce a material, that would be linked to the PMMA tube wall. Pursuing this goal we were successful, but we encountered problems during cleaning and drying of the samples, as cracks tend to appear during the process. Cracks emerged throughout the entire material randomly. The surface area was either porous or smooth. Furthermore, functionalization of the previously synthesized material inside PMMA tubes was desired. For the functionalization, diethylamine and a solution of diethylamine in ethanol were used. The solution was slowly pumped through the polymer material, allowing the amine to bind with the free epoxy group provided by GMA in the material. FTIR analysis and elemental analysis have determined our functionalization as successful. poliHIPE in situ polimerizacija glicidil metakrilat poli(metil metakrilat) funkcionalizacija dietilamin polyHIPE in situ polymerization glycidyl methacrylate poly(methyl methacrylate) functionalization diethylamine true true false [A. Kokol] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2017-08-25 10:25:07 2017-09-14 10:58:32 2022-08-01 14:16:15 2019-07-11 16:26:26 2017 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66.095.26(043.2) 21034774 URN:SI:UM:DK:A0R86XDH UN_Kokol_Amadeja_2017.pdf UN_Kokol_Amadeja_2017.pdf 1 1D145596CC7B6B894BCF42D069B26FA9 f5b93026df19d8f81d529fc23c1b187ec229eb2779a7718ba4481bf0af6ae423 36ab614e-7c0f-11eb-bb7a-00155d0001ca 20.500.12556/dkum/ea36c255-a5c3-401a-b392-7e18a3bfbc63 https://dk.um.si/Dokument.php?lang=slv&id=117491 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0