20.500.12556/RUL-187176 UV polimerizacija pirola na reometru UV polymerization of pyrrole on a rheometer V diplomskem delu sem preučeval možnost UV polimerizacije pirola in spremljanje le-te na reometru. Ker pirol samostojno ne polimerizira, sem mu dodal jodonijevo sol, in sicer bis(4-terc-butilfenil)jodonijev heksafluorofosfat, ki pod UV svetlobo sproži oksidativno polimerizacijo pirola v polipirol. Pripravil sem referenčno zmes 2-hidroksietilmetakrilata (2-HEMA), etanola in fotoiniciatorja tipa I (Genocure LTM ali MBF), ji dodal pirol in jodonijevo sol ter reakcijo spremljal z oscilacijsko reometrijo (G′, G″, tan δ) in FTIR-spektroskopijo pri UV valovnih dolžinah 365 in 405 nm. Ugotovil sem, da je polimerizacija pirola uspešno potekla ob prisotnosti jodonijeve soli, vendar je imela negativen vpliv na samo polimerizacijo 2-HEMA. Polimerizacija 2-HEMA je ob prisotnosti polimerizacije pirola potekala počasneje, kar je bilo razvidno iz počasnejšega naraščanja kompleksne viskoznosti in obeh modulov tekom reoloških meritev. S FTIR-analizo pa sem tudi ugotovil, da kljub daljšemu času UV obsevanja reakcijske zmesi s prisotnim pirolom je del 2-HEMA ostal nezreagiran. In this thesis, I investigated the possibility of UV polymerization of pyrrole and monitored this process using a rheometer. Since pyrrole does not polymerize on its own, I added an iodonium salt, namely bis(4-tert-butylphenyl)iodonium hexafluorophosphate, which under UV light initiates the oxidative polymerization of pyrrole into polypyrrole. I prepared a reference mixture of 2-hydroxyethyl methacrylate (2-HEMA), ethanol, and a type I photoinitiator (Genocure LTM or MBF), added pyrrole and the iodonium salt to it, and monitored the reaction using oscillatory rheometry (G′, G″, tan δ) and FTIR spectroscopy at UV wavelengths of 365 and 405 nm. I found that the polymerization of pyrrole proceeded successfully in the presence of the iodonium salt; however, it had a negative effect on the polymerization of 2-HEMA itself. In the presence of pyrrole polymerization, the polymerization of 2-HEMA proceeded more slowly, which was evident from the slower increase in complex viscosity and both moduli during the rheological measurements. FTIR analysis also showed that, despite a longer UV irradiation time of the reaction mixture containing pyrrole, a portion of the 2-HEMA remained unreacted. pirol jodonijeva sol 2-HEMA UV-fotopolimerizacija oscilacijska reometrija pyrrole iodonium salt 2-HEMA UV photopolymerisation oscillatory rheometry true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-09-09 10:30:09 2026-09-09 10:30:11 2026-09-11 03:27:43 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 25924 Hafner_Luka_-_UV_polimerizacija_pirola_na_reometru.pdf Hafner_Luka_-_UV_polimerizacija_pirola_na_reometru.pdf 1 199426D2831D7AAC13C1266435CF2DFE 62d8a66c4734a2492ba6c08c57d628a9c7cf0d46c8ebd7e19a67126ab1444b35 a7851052-ac28-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=246641 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0