| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font
First page > Show document

Show document Help

Title:Polimerizacija terpenov v koloidnih prekurzorjih : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Skušek, Nika (Author)
ID Krajnc, Peter (Mentor) More about this mentor... New window
ID Kramer, Stanko (Comentor)
Files:.pdf UN_Skusek_Nika_2022.pdf (6,72 MB)
MD5: 3F3F2F79BB6D27261ABD561CF12DB770
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Naravni polimeri v vse večji meri nadomeščajo sintetične ekvivalente iz fosilnih goriv. Za njihovo sintezo se med drugim uporabljajo terpeni, ki so široko dostopni kot stranski produkti pri predelavi citrusov. Polimeri sintetizirani iz le-teh imajo nizko toksičnost in so potencialno biorazgradljivi, zato se intenzivno raziskujejo kot prekurzorji za razvoj trajnostnih polimerov. V diplomskem delu smo z uporabo emulzij z visokim deležem notranje faze, t.i. HIPE, sintetizirali porozne poliHIPE materiale na osnovi izbranih terpenov, tj. limonena in mircena. Pripravili smo kopolimere različnih razmerij terpena proti akrilatu (1:1, 1:3 in 3:1), pri čemer smo kot drugi monomer v organski fazi uporabili trimetilolpropan triakrilat (TMPTA) ob dodatku surfaktanta Hypermer B246, iniciatorja AIBN in toluena. Poleg tega smo glede na celotni volumen emulzije dodali 80 vol.% vodne faze. Na podlagi različnih razmerij smo ugotavljali vključenost terpena v polimeru in opazovali vpliv na morfologijo ter poroznost. Vzorce smo očistili v Soxhletovem aparatu in karakterizirali z različnimi metodami. Kemijsko sestavo smo preverili z elementno analizo, iz dobljenih vrednosti smo izračunali vključenost terpena v našem vzorcu. Z elektronsko vrstično mikroskopijo (SEM) smo preverili ali imajo vzorci ustrezno, za poliHIPE značilno, porozno strukturo sestavljeno iz primarnih in sekundarnih por, ki smo jih tudi izmerili. Po metodi BET smo izmerili specifične površine, določili smo še celokupno in skeletno gostoto iz katere smo izračunali poroznost. Nenazadnje pa smo posneli FTIR spektre s katerimi smo se prepričali o uspešnosti sinteze.
Keywords:poliHIPE, terpeni, naravni polimeri, HIPE, kopolimeri
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[N. Skušek]
Year of publishing:2022
Number of pages:1 spletni vir (1 datoteka PDF (IX, 30 f.))
PID:20.500.12556/DKUM-82306 New window
UDC:547.597(043.2)
COBISS.SI-ID:119916803 New window
Publication date in DKUM:31.08.2022
Views:712
Downloads:126
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
SKUŠEK, Nika, 2022, Polimerizacija terpenov v koloidnih prekurzorjih : diplomsko delo univerzitetnega študijskega programa I. stopnje [online]. Bachelor’s thesis. Maribor : N. Skušek. [Accessed 28 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=82306
Copy citation
  
Average score:
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share


Searching for similar works...Please wait....
Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:11.08.2022

Secondary language

Language:English
Title:Polymerization of terpenes in colloidal precursors
Abstract:Natural polymers are increasingly replacing synthetic equivalents from fossil fuels. An example of monomers that can be used for the synthesis of natural polymers are terpenes. Terpenes are widely available as by-products in the processing of citrus fruits. The polymers synthesized from terpenes have low toxicity and are potentially biodegradable, which is why they are intensively researched as precursors for the development of sustainable polymers. In this thesis high internal phase emulsions (HIPEs) were used to synthesize porous polyHIPE materials, based on different terpenes, namely limonene and myrcene. The copolymers were prepared with different terpene to acrylate ratios (1:1, 1:3 and 3:1) by using an acrylate as the second monomer in the organic phase with the addition of the surfactant Hypermer B246, the initiator AIBN and the solvent toluene. The water phase comprised 80 vol.% of the emulsion. Based on the different monomer ratios the inclusion of the terpenes into the polymer matrix was determined and its influence on the morphology and porosity was investigated. The samples were purified in a Soxhlet apparatus and characterized by using different methods. Elemental analysis was used to determine the chemical composition. The obtained values were used to calculate the terpene content in the samples. Scanning electron microscopy (SEM) was used to determine whether the synthesized samples had a typical polyHIPE morphology consisting of primary and secondary pores. The specific surface area was determined by using the BET method, while the porosity of the samples was obtained by using helium pycnometry. Lastly, FTIR spectra were recorded to confirm the successfulness of the synthesis.
Keywords:polyHIPE, terpenes, natural polymers, HIPE, copolymers


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica