Terpeni iz bioloških virov za pripravo makromolekul

diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje

Irena Ačko (Author), Peter Krajnc (Mentor), Stanko Kramer (Co-mentor)

Abstract

Terpeni so spojine naravnega izvora in zaradi tega predstavljajo dobro alternativo spojinam sintetičnega izvora, predvsem tistim, ki so petrokemičnega izvora. Zaradi strukturne raznolikosti terpenov in različne reaktivnosti je njihov spekter uporabe širok. V diplomskem delu je predstavljena priprava poroznih polimernih materialov iz različnih akrilatov – trimetilolpropan triakrilat in pentaeritritol tetraakrilat ter terpenov – karvon in mircen. Delež notranje faze je bil 80 vol. %. Za pripravo smo uporabili karvon in trimetilolpropan triakrilat ter mircen in pentaeritritol tetraakrilat v razmerjih 1:3, 1:1, in 3:1. Namen priprave poroznih materialov z različnimi razmerji akrilata in terpena je ugotavljanje vpliva različnih terpenov in deležev le-teh na vrednosti specifične površine in velikosti por. Na pripravljenem materialu smo izvedli analizo morfologije z vrstičnim elektronskim mikroskopom. Opazovali smo primarne in sekundarne pore. Po izračunu povprečja primarnih in sekundarnih por smo ugotovili, da so vrednosti relativno podobne, kar nakazuje na to, da razmerje terpen:akrilat ter sestava materiala nimata signifikantnega vpliva na velikost por. Povprečni premeri primarnih por se gibajo med 6 μm in 10 μm, povprečni premeri sekundarnih por pa imajo vrednosti okoli 1 μm. Z Brunauer-Emmett-Teller analizo smo izmerili specifične površine in na podlagi dobljenih vrednosti ugotovili, da višji kot je delež akrilata, višja bo stopnja zamreženosti, kar se bo posledično odrazilo v visokih vrednostih specifične površine in obratno, višji bo delež terpena, nižja bo specifična površina. Iz rezultatov o specifični površini in premerov por smo ugotovili tudi, da manjši kot so premeri por, večja je specifična površina. Z elementno analizo smo določili vsebnost ogljika in vodika v vzorcih s karvonom in trimetilolpropan triakrilatom. Rezultate elementne analize smo uporabili za izračun vključenosti karvona in ugotovili, da je med 4 mol. % in 37 mol. %.

Keywords

poliHIPE;terpeni;karvon;mircen;porozni materiali;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2022
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[I. Ačko]
UDC:	539.199:547.597(043.2)
COBISS:	121413123
Views:	7
Downloads:	3
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Terpenes from biological sources for the preparation of macromolecules
Secondary abstract:	Terpenes are compounds of natural origin and therefore, represent a good alternative to compounds of synthetic origin, especially those of petrochemical origin. The structural diversity of terpenes and their different reactivities enable a wide range of applications. In this diploma thesis porous polymers from different acrylates – trimethylolpropane triacrylate and pentaerythritol tetraacrylate and terpenes – carvone and myrcene were synthesised. The internal phase fraction was 80 % vol. For the preparation of these polymers different ratios of carvone and trimethylolpropane triacrylate and myrcene and pentaerythritol tetraacrylate were used (1:3, 1:1, 3:1). Different ratios of acrylate and terpene were used to determine their effect on properties of the synthesised polymers (specific surface area and pore size). The morphology of the prepared material was analysed using a scanning electron microscope (SEM). Primary and secondary pores were observed. It was found that the different monomer ratios did not significantly affect the pore size as it ranged from approximately 6 μm to approximately 10 μm. However, the monomer ratios had a significant effect on the specific surface areas which increased up to 159,5 m2/g with the increase of acrylate content. Lastly, the elemental composition of the polymers was measured to determine the inclusion of the terpenes into the polymer which was up to 37 mol. %.
Secondary keywords:	polyHIPE;terpenes;carvone;myrcene;porous materials;
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	1 spletni vir (1 datoteka PDF (IX, 30 f.))
ID:	16282873