magistrsko delo
Nuša Cmager (Avtor), Peter Krajnc (Mentor), Muzafera Paljevac (Komentor)

Povzetek

V magistrskem delu smo uspešno izvedli graftiranje molekul glicidil metakrilata na funkcionaliziran DVB/VBC kopolimer. Z namenom priprave polimera, ki bi ga funkcionalizirali, smo uspešno sintetizirali DVB/VBC kopolimer, ki smo ga naknadno hiperzamrežili in mu bistveno povečali specifično površino. Specifična površina je dosegala vrednosti več kot 1000 m2/g. Polimer smo uspešno funkcionalizirali s tris(2-aminoetil) aminom in potrdili njegovo vezavo s FTIR spektroskopijo in elementno analizo. Sledila je imobilizacija izbranega RAFT reagenta 4-ciano-4-[(dodecilsulfaniltiokarbonil)-sulfanil] pentanojske kisline. Rezultati so pokazali prisotnost amidnega signala, ki je posledica reakcije med aminom in RAFT reagentom. Elementna analiza je pokazala zvišanje vsebnosti žvepla v materialu. Na koncu smo izvedli reakcijo graftiranja na površini sintetiziranega polimera z molekulami glicidil metakrilata. Izvedli smo reakcije na polimeru v prahu in polimeru v kosu. Rezultati so pokazali uspešnost na obeh primerih, vendar je bilo povečanje mase večje v primeru polimera v kosu. Vezavo molekul GMA smo okarakterizirali z vrstično elektronsko mikroskopijo, ki je v primerjavi z osnovnim polimerom prikazala bolj mehke in zabrisane linije. Te so posledica nove plasti na polimeru. Graftiranje smo okarakterizirali še s FTIR spektroskopijo, ki je potrdila prisotnost epoksidnega signala v materialu zaradi glicidil metakrilata.

Ključne besede

RAFT polimerizacija;hiperzamreženje;gratiranje;porozni polimeri;glicidil metakrilat;poliHIPE;magistrske naloge;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.09 - Magistrsko delo
Organizacija: UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo
Založnik: [N. Cmager]
UDK: 665.562.2(043.2)
COBISS: 21928982 Povezava se bo odprla v novem oknu
Št. ogledov: 702
Št. prenosov: 129
Ocena: 0 (0 glasov)
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Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: Chemical surface modification of vinylbenzylchloride polyHIPE materials by RAFT grafting
Sekundarni povzetek: In the master's thesis, the grafting of glycidyl methacrylate molecules to a functionalized DVB/VBC copolymer was successfully performed. In order to prepare the polymer to be functionalized, we successfully synthesized the DVB/VBC copolymer, which was subsequently hypercrosslinked. With this procedure we increased the specific surface area. The specific surface has reached values of more than 1000 m2/g. The polymer was successfully functionalized with tris (2-aminoethyl) amine and we confirmed its binding with FTIR spectroscopy and elemental analysis. The immobilization of the selected RAFT agent 4-cyano-4-[(dodecylsulfanylthiocarbonyl) -sulfanyl] pentanoic acid followed. The results showed the presence of an amide peak as a result of the reaction between the amine and RAFT agent. Elemental analysis showed an increase in sulfur content in the material. Finally, the grafting reaction on the surface of the synthesized polymer with glycidyl methacrylate molecules was performed. We conducted reactions to the polymer in powder and to the polymer in a piece. The results showed the success of both cases, but in the case of polymers in a piece, the increase in weight was greater. The binding of GMA molecules was characterized by scanning electron microscope, which, in comparison with the basic polymer, showed more soft and blurred lines. These are the results of new polymer grafts. Grafting was also characterized by FTIR spectroscopy, which confirmed the presence of an epoxy signal in material due to glycidyl methacrylate.
Sekundarne ključne besede: RAFT plymerization;hypercrosslinking;grafting;porous polymers;glycidyl methacrylate;polyHIPE;
URN: URN:SI:UM:
Vrsta dela (COBISS): Magistrsko delo/naloga
Komentar na gradivo: Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Strani: VIII, 56 str.
ID: 10984230