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Naslov:In situ polimerizacija glicidil metakrilata v poli(metil metakrilatu)
Avtorji:ID Kokol, Amadeja (Avtor)
ID Krajnc, Peter (Mentor) Več o mentorju... Novo okno
ID Paljevac, Muzafera (Komentor)
Datoteke:.pdf UN_Kokol_Amadeja_2017.pdf (3,16 MB)
MD5: 1D145596CC7B6B894BCF42D069B26FA9
PID: 20.500.12556/dkum/ea36c255-a5c3-401a-b392-7e18a3bfbc63
 
Jezik:Slovenski jezik
Vrsta gradiva:Diplomsko delo/naloga
Tipologija:2.11 - Diplomsko delo
Organizacija:FKKT - Fakulteta za kemijo in kemijsko tehnologijo
Opis: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.
Ključne besede:poliHIPE, in situ polimerizacija, glicidil metakrilat, poli(metil metakrilat), funkcionalizacija, dietilamin
Kraj izida:Maribor
Založnik:[A. Kokol]
Leto izida:2017
PID:20.500.12556/DKUM-67638 Novo okno
UDK:66.095.26(043.2)
COBISS.SI-ID:21034774 Novo okno
NUK URN:URN:SI:UM:DK:A0R86XDH
Datum objave v DKUM:14.09.2017
Število ogledov:1751
Število prenosov:162
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:KTFMB - FKKT
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Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:25.08.2017

Sekundarni jezik

Jezik:Angleški jezik
Naslov:In situ polymerization of glycidyl methacrylate in poly(methyl methacrylate)
Opis: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.
Ključne besede:polyHIPE, in situ polymerization, glycidyl methacrylate, poly(methyl methacrylate), functionalization, diethylamine


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