20.500.12556/DKUM-93450 Inovativna sinteza poroznih glicidil metakrilatnih zrn s tehniko suspenzijske polimerizacije HIP emulzije diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje Innovative synthesis of porous glycidyl methacrylate beads using the suspension polymerization technique of HIP emulsion V okviru diplomskega dela smo razvijali metodo za sintezo visoko poroznih polimernih kroglic na osnovi GMA (glicidil metakrilat) in EGDMA (etilenglikol dimetakrilat). Za dosego visoke poroznosti v kroglicah smo izvedli suspenzijsko polimerizacijo emulzije z visokim deležem notranje faze. Ker so emulzije viskozni sistemi, smo najprej proučili vpliv različnih deležev notranje faze na viskoznost emulzije in posledično na morfologijo polimeriziranih materialov. Ugotovili smo, da z zviševanjem deleža notranje faze narašča viskoznost emulzije, velikost por v končnih produktih se povečuje, stene por se tanjšajo, povezovalne pore postajajo večje in bolj sferične oblike, specifična površina pa se poveča z 2,4 na 3,1 m²/g. V naslednjem koraku smo pripravili suspenzijo emulzije z visokim deležem notranje faze tako, da smo k homogeni emulziji dodali vodno raztopino stabilizatorja, suspenzijo temeljito premešali in izvedli fotopolimerizacijo. Kot končni produkt smo dobili polimerne kroglice, med katerimi so bile nekatere skoraj popolnoma sferične, druge pa bolj cilindrične oblike. Kroglice so ohranile odprto celično morfologijo. Pripravljene materiale smo karakterizirali z različnimi tehnikami, vključno s FTIR spektroskopijo, porozimetrijo, vrstično elektronsko mikroskopijo in elementno analizo, kar je omogočilo podrobno razumevanje njihove strukture, morfologije in kemijskih lastnosti. In this work we have developed a method for the synthesis of highly porous polymeric beads based on GMA (glycidyl methacrylate) and EGDMA (ethylene glycol dimethacrylate). In order to achieve a high porosity in the beads, we carried out a suspension polymerisation of an emulsion with a high internal phase fraction. Since emulsions are viscous systems, we first investigated the effect of varying the internal phase fraction on the viscosity of the emulsion and consequently on the morphology of the polymerised materials. We found that increasing the internal phase fraction leads to a higher viscosity of the emulsion, larger pore sizes in the final products, thinner pore walls and larger, more spherical connecting pores, while the specific surface area increased from 2.4 to 3.1 m²/g. In the next step, we prepared a suspension of the high internal phase emulsion by adding an aqueous solution of a stabiliser to the homogeneous emulsion, mixing the suspension thoroughly and performing photopolymerisation. The final product consisted of polymeric beads, some of which were almost perfectly spherical, while others had a more cylindrical shape. The beads retained an open-cell morphology. The materials produced were characterised using various techniques, including FTIR spectroscopy, porosimetry, scanning electron microscopy (SEM) and elemental analysis, which allowed a detailed understanding of their structure, morphology and chemical properties. porozni polimeri poliHIPE HIP emulzija glicidil metakrilat suspenzijska polimerizacija porous polymers polyHIPE HIP emulsion glycidyl methacrylate suspension polymerization true true false [T. Vozelj] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-06-26 12:24:25 2025-09-23 13:02:42 2025-09-27 03:36:29 0000-00-00 00:00:00 2025 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (IX, 35 str.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66.095.26:544.773.3(043.2) 250662147 VS_Vozelj_Tilen_2025.pdf VS_Vozelj_Tilen_2025.pdf 1 DD37D11AB6B123F2F2955567DDC83A29 23c64a653edee3877fb880757d795002359ceedd66bbaccfbead41d148dd19a9 3e2a34ab-8d72-11f0-9299-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=198020 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0