Hiperzamreženje polihipe materialov z uporabo tiol-en klik kemije

diplomsko delo univerzitetnega študijskega programa I. stopnje

Vitan Šlamberger (Author), Peter Krajnc (Mentor), Stanko Kramer (Co-mentor)

Abstract

V diplomskem delu je predstavljena priprava poroznih polimerov na osnovi 2-etilheksil akrilata (EHA) in različnih zamreževal (divinil adipat (DVA), etilen glikol dimetakrilat (EGDMA), 1,4 – butandiol divinil eter (BDVE)) z uporabo polimerizacije v emulziji z visokim deležem notranje faze oz. HIP emulziji. Kopolimere smo pripravili v različnih razmerjih EHA in zamreževala, pri čemer smo dodali še surfaktant PEL 121 in iniciator AIBN. Poleg prej naštetih komponent, ki sestavljajo kontinuirno fazo, smo dodali še 80 vol.% vodne faze, ki je bila 1,78-% vodna raztopina CaCl2. Sintetizirane polimere smo hiperzamrežili z uporabo radikalskega hiperzamreženja in tiol-en hiperzarmeženja z di- in tri-tiolom z namenom povišanja specifične površine. Pri treh od devetih sintetiziranih polimerih smo opazili poliHIPE strukture z uporabo vrstične elektronske mikroskopije, pri ostalih pa smo opazili bikontinuirno morfologijo. Specifične površine polimerov so bile izmerjene z uporabo porozimetrije na podlagi modela BET, in sicer do 9,02 m2/g, kar je predstavljalo približno 1,5-kratno povišanje specifične površine zaradi hiperzamreženja z di-tiolom.

Keywords

poliHIPE materiali;hiperzamreženje;polimerizacija;porozni polimeri;tiol-en;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2023
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[V. Šlamberger]
UDC:	66.095.26(043.2)
COBISS:	170140163
Views:	99
Downloads:	16
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Hypercrosslinking of polyhipe materials via thiol-ene click chemistry
Secondary abstract:	The thesis presents the preparation of porous polymers based on 2-ethylhexyl acrylate (EHA) and various crosslinkers (divinyl adipate (DVA), ethylene glycol dimethacrylate (EGDMA) and 1,4-butanediol divinyl ether (BDVE)) using high internal phase emulsion templating. The copolymers were prepared in different proportions of EHA and the crosslinkers, while adding the surfactant PEL 121 and the initiator AIBN. In addition to the previously listed components that make up the continuous phase, 80 vol.% of the aqueous phase (1,78-% aqueous solution of CaCl2) was added. The synthesized polymers were hypercrosslinked using radical hypercrosslinking and thiol-ene hypercrosslinking with a di- and a tri-thiol in order to increase the specific surface area. In three of the nine synthesized polymers, a distinct polyHIPE structure was observed using scanning electron microscopy, while in the rest, a bicontinuous morphology was observed. The specific surface areas of the polymers were determined using porosimetry based on the BET model. The specific surface area was up to 9,02 m2/g (using di-thiol), which represented a 1.5-fold increase compared to the non-hypercrosslinked materials.
Secondary keywords:	polyHIPE;hypercrosslinking;polymerization;porous polymers;thiol-ene;
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	1 spletni vir (1 datoteka PDF (VIII, 27 f.))
ID:	19812466