Vpliv strukture poliHIPE materialov na njihove hidrodinamske lastnosti

Bizjak, Ožbej (author), Podgornik, Aleš (mentor)

PoliHIPE polimeri so visoko porozni materiali, lahko različnih oblik, sintetizirani iz HIPE emulzij. Posebnost teh emulzij je visok delež notranje faze (nad 74 %), kar se kaže v visoko porozni strukturi polimerov in nudi različne lastnosti in možnosti modifikacije ter posledično različne načine uporabe na mnogih področjih. V okviru magistrske naloge sem s fotoiniciirano polimerizacijo sintetiziral veliko polimernih vzorcev različnih poroznosti (75, 80, 85 in 90 %). Vzorcem sem izmeril padec tlaka in njihove prepustnosti. Izvedena je bila analiza njihove strukture s pomočjo SEM mikroskopije in računalniškega programa. Nato so bile preučene njihove hidrodinamske lastnosti s pomočjo HPLC analize. Cilj magistrske naloge je bil preučiti strukturo poliHIPE polimerov, sintetiziranih na opisan način, predvsem kako poroznost vpliva na prepustnost medija skozi polimere. Sinteza poliHIPE vzorcev se je izkazala za dokaj enostavno in ponovljivo glede na želene lastnosti za različne poroznosti. Dobljeni rezultati pa so pokazali odvisnost in povezavo med poroznostjo in prepustnostjo.

• Language: Slovenian
• Keywords: poliHIPE, poroznost, prepustnost, HPLC
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2021
• PID: 20.500.12556/RUL-124294
• COBISS.SI-ID: 48080387
• Publication date in RUL: 14.01.2021

Secondary language

• Language: English
• Title: Effects of the polyHIPE material structure on their hydrodynamic properties

Abstract

PolyHIPE polymers are highly porous materials that are synthesized from HIPE emulsions. These materials can be synthesized in different shapes and sizes. What makes these HIPE emulsions so special is a very high percentage of the internal phase (over 74%), which gives the polymers their porous structure and consequently extraordinary properties. They can also be functionalized for different uses in many different fields of science. When working on my master’s thesis I synthesized multiple polymer samples with varying porosity (70, 80, 85 and 90%). I measured the pressure drop of the samples as well as their permeability. Their structure was analyzed using SEM microscopy and computer software. Their hydrodynamic properties were studied using HPLC. The aim of my master’s thesis was to study the structural properties of the synthesized polyHIPE polymers that are described especially how the permeability of the said polymers is dependent on their porosity. The polyHIPE polymers were relatively straight forward to synthesize with properties that were reliable and robust for different porosities. The acquired results have shown the dependence of porosity and permeability.

• Keywords: polyHIPE, porosity, permeability, HPLC