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Title:Katalizirana hidroliza polimerov : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Samsa, Žiga (Author)
ID Pečar, Darja (Mentor) More about this mentor... New window
ID Goršek, Andreja (Comentor)
Files:.pdf UN_Samsa_Ziga_2022.pdf (3,46 MB)
MD5: 244CA3F1D6BBB4FBE531A2B81D06B15A
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V diplomskem delu je prikazana študija katalizirane hidrolize polimerov. Kot kislinski katalizator smo uporabili ZSM-5, sintetiziran na osnovi mezoporozne silike. Sintetiziran katalizator smo uporabili pri reakciji degradacije polietilen tereftalata v vodnem mediju. Polietilen tereftalat spada med najbolj razširjene polimere in se uporablja kot sintetični material. Velika večina proizvedene plastike in polimernih produktov ni biorazgradljiva, kar pripomore k onesnaževanju okolja. Reakcije smo izvajali v diferenčnem dinamičnem kalorimetru. Sledila je karakterizacija katalizatorja z različnimi karakterizacijskimi metodami (infrardeča spektroskopija s Fourierjevo transformacijo, vrstična elektronska mikroskopija, N2 adsorpcija in določanje velikosti por, diferenčna dinamična kalorimetrija, termogravimetrična analiza, dinamično sipanje svetlobe, kemisorpcija – določanje kislinskih mest). Dobljene produkte smo analizirali z uporabo tekočinske kromatografije visoke ločljivosti. Reakcija s katalizatorjem je pri določeni temperaturi sicer potekala učinkoviteje kot brez njega, vendar so bile dosežene presnove zelo nizke. Končna ugotovitev študije je, da sintetiziran katalizator ni dovolj učinkovit za izvedbo degradacije polietilen tereftalata. Primerjava poteka reakcije degradacije polietilen tereftalata v primeru uporabe katalizatorja in v primeru višanja temperature kljub temu pokaže večji vpliv temperature.
Keywords:ZSM-5, polietilen tereftalat, hidroliza, polimeri, katalizator
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[Ž. Samsa]
Year of publishing:2022
Number of pages:1 spletni vir (1 datoteka PDF (VIII, 34 f.))
PID:20.500.12556/DKUM-82208 New window
UDC:621.646:681.533.38(043.2)
COBISS.SI-ID:119552003 New window
Publication date in DKUM:26.08.2022
Views:917
Downloads:148
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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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:08.08.2022

Secondary language

Language:English
Title:Catalyzed hydrolysis of polymers
Abstract:This paper presents a study related to catalysed hydrolysis of polymers, in which ZSM-5 was synthesised on the basis of mesoporous silica, and used as an acid catalyst. The synthesised catalyst was then used in the degradation of polyethylene terephthalate in an aqueous medium. Polyethylene terephthalate is one of the most widespread polymers and is used as a synthetic material. Most of the produced plastic and polymer products are not biodegradable, which has a significant impact on environmental pollution. The reactions took place in a differential scanning calorimeter. Further, the catalyst characterisation using different characterisation methods (infrared spectroscopy with Fourier transformation, scanning electron microscopy, N2 adsorption and porosity determination, differential scanning calorimetry, thermogravimetric analysis, dynamic light scattering, chemisorption – acid site determination) was performed. The acquired samples were analysed using high-resolution liquid chromatography. The reaction with a catalyst was more effective at a certain temperature than without it, yet the achieved values were very low. The final conclusion drawn from this study is that synthesised catalyst is not efficient enough to be used in the degradation of polyethylene terephthalate. From the comparison between using the catalyst or increasing the temperature, it can be seen that the temperature change has a bigger impact on the reaction.
Keywords:ZSM-5, polyethylene terephthalate, hydrolysis, polymers, catalyst


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