20.500.12556/DKUM-94798 Pridobivanje trajnostnih polimernih materialov iz vanilin metakrilata Obtaining sustainable polymer materials from vanillin methacrylate V okviru diplomskega dela smo raziskali sintezo in uporabo vanilin metakrilata kot bio-osnovanega monomera za pripravo trajnostnih, visoko poroznih polimernih materialov. Vanilin metakrilat smo sintetizirali iz vanilina in anhidrida metakrilne kisline ob prisotnosti katalizatorja 4-(dimetilamino)piridina v inertni atmosferi. Nastali produkt smo okarakterizirali z jedrsko magnetno resonanco, s čimer smo potrdili uspešnost esterifikacije ter strukturo sintetizirane spojine. Vanilin metakrilat smo uporabili kot osnovni monomer za pripravo poroznih kopolimerov s tremi različnimi zamreževali: etilen glikol dimetakrilatom, 1,6-heksandiol diakrilatom in divinil adipatom. Polimere smo sintetizirali s postopkom fotopolimerizacije emulzij z visokim deležem notranje faze. Kot notranjo fazo emulzij smo uporabili vodno raztopino kalcijevega klorida heksahidrata, kot surfaktant Hypermer B246 ter kot fotoiniciator Irgacure 819. Preučevali smo vpliv razmerja monomerov na morfologijo in strukturo pripravljenih materialov. Sintetizirane poliHIPE monolite smo okarakterizirali z vrstično elektronsko mikroskopijo (SEM), infrardečo spektroskopijo (FTIR) ter z določanjem specifičnih površin po metodi BET porozimetrije. Rezultati so pokazali, da imajo sintetizirani materiali odprtocelično ali delno odprtocelično morfologijo. Izrazita odprtocelična morfologija je bila dosežena pri uporabi etilen glikol dimetakrilata in 1,6-heksandiol diakrilata, medtem ko je bil pri polimerih z divinil adipatom zaznan nastanek por, vendar te niso bile tako izrazito odprtocelične kot pri ostalih dveh zamreževalih. FTIR analiza je potrdila uspešno vključitev monomerov v polimerno verigo, BET porozimetrija pa je pokazala, da se s povečevanjem deleža zamreževala povečuje tudi specifična površina materialov. In this work, we investigated the synthesis and application of vanillin methacrylate as a bio-based monomer for the production of sustainable, highly porous polymeric materials. Vanillin methacrylate was synthesised from vanillin and methacrylic anhydride in the presence of the catalyst 4-(dimethylamino)pyridine under an inert atmosphere. The resulting product was characterised by nuclear magnetic resonance spectroscopy (NMR), which confirmed the successful esterification and the structure of the synthesised compound. Vanillin methacrylate was used as the main monomer for the preparation of porous copolymers with three different crosslinkers: ethylene glycol dimethacrylate (EGDMA), 1,6-hexanediol diacrylate (HDDA), and divinyl adipate (DVA). The polymers were synthesised by high internal phase emulsion (HIPE) photopolymerisation. The internal phase of the emulsions consisted of an aqueous solution of calcium chloride hexahydrate, Hypermer B246 was used as surfactant, and Irgacure 819 served as photoinitiator. The effects of the monomer ratios on the morphology and structure of the resulting materials were investigated. The synthesised polyHIPE monoliths were characterised by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) , and BET surface analysis. The results showed that the synthesised materials exhibited either an open-cell or partially open-cell morphology. A pronounced open-cell morphology was achieved when EGDMA and HDDA were used, while polymers with DVA showed pore formation, but the pores were less pronounced open-cell compared to the other two crosslinkers. FTIR analysis confirmed the successful incorporation of the monomers into the polymer network, and BET porosimetry showed that the specific surface area of the materials increased with the crosslinker content. vanilin vanilin metakrilat anhidrid ocetne kisline emulzije poliHIPE bioosnovani polimeri vanillin vanillin methacrylate acetic anhydride emulsions polyHIPE bio-based polymers true true false [U. Sodin] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-08-27 15:55:09 2025-09-12 14:35:23 2025-09-26 14:10:15 0000-00-00 00:00:00 2025 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66.091.3:678.744.33(043.2) 250673155 VS_Sodin_Uros_2025.pdf VS_Sodin_Uros_2025.pdf 1 57564DF15B435B354D22209F36E79624 fd8f8ab1fd0b5d8041b6db4c0fcbdd1b9be39f966568831d1f8a1a5f85998554 caf725be-8f17-11f0-886e-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=198260 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0