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Title:Kemijsko recikliranje polietilen tereftalata in karakterizacija nastalih razgradnih produktov
Authors:ID Marko, Dea (Author)
ID Volmajer Valh, Julija (Mentor) More about this mentor... New window
ID Vončina, Bojana (Co-mentor)
Files:.pdf MAG_Marko_Dea_2017.pdf (2,65 MB)
MD5: 3D2743825A24A29D4AD8A0CE4A5133EC
PID: 20.500.12556/dkum/39f0bcf0-7dfa-4dfb-a5fb-4c3b811fe86d
 
Language:Slovenian
Work type:Master's thesis/paper (mb22)
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:V zadnjih letih je zaradi vse višjega življenjskega standarda ter rasti prebivalstva, močno narasla količina proizvedenih in uporabljenih tekstilnih materialov. Povečala se je tudi količina odpadnega tekstila, lahko pa sklepamo, da se bo ta v prihodnje še povečala. Polietilen tereftalat je danes tretji najbolj razširjen polimer, za polietilenom in polipropilenom. V tekstilni industriji je najbolj uporabljen sintetični material za izdelavo vlaken. V raziskavi smo se ukvarjali s problematiko recikliranja PET vlaken. Predpostavljali smo, da bomo kot glavni produkt izolirali monomer tereftalne kisline. Metoda, ki smo jo uporabili je nevtralna hidroliza PET vlaken v visokotlačnem reaktorju, ki nam omogoča višjo čistost izhodnih snovi – tereftalne kisline in etilen glikola. Izvedli smo izolacijo in čiščenje nastalih produktov s pomočjo kislinsko bazne ekstrakcije in destilacije. Nastale produkte smo analizirali z infrardečo spektroskopijo. Cilj magistrskega dela je bil raziskati razgradne produkte po kemijskem recikliranju PET vlaken v visokotlačnem reaktorju pod različnimi pogoji. Spreminjali smo temperaturo, čas in razmerje med uporabljenim tekstilnim materialom in topilom in nato analizirali nastale razgradne produkte. Ugotovili smo, da so pride do popolne depolimerizacije PET vlaken do tereftalne kisline pri naslednjih pogojih: T = 250 °C in t = 10 min (vzorec D2).
Keywords:kemijsko recikliranje, razgradnja PET, tereftalna kislina, IR spektroskopija
Year of publishing:2017
Publisher:[D. Marko]
Source:Maribor
PID:20.500.12556/DKUM-67998 New window
UDC:678.028.6:678.742.2(043.2)
COBISS.SI-ID:21241622 New window
NUK URN:URN:SI:UM:DK:VOVLVDQA
Publication date in DKUM:05.10.2017
Views:1942
Downloads:285
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FS
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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:05.09.2017

Secondary language

Language:English
Title:Chemical recycling of polyethylene terephthalate and characterization of degradation products
Abstract:Increasing standard of living and population growth in recent years are the reason the volume of manufactured and used textile materials has increased considerably. The amount of waste textile has increased and we can conclude it will also increase in the future. Polyethylene terephthalate is the third most common polymer, after polyethylene and polypropylene. It is the most used synthetic fiber in the textile industry. In the research we dealt with the problem of recycling PET fibers. We assumed that as the main product we would isolate the monomer of terephthalic acid. The methods we used are the neutral hydrolysis of PET fibers in the high-pressure reactor, which enables us to achieve higher purity of the starting materials – terephtalic acid and ethylene glycol. We isolated and purified the resulting products by acid base extraction and distillation. The resulting products were analyzed by infrared spectroscopy. The aim of this master's thesis was to investigate the degradation of the products after chemical recycling of PET fibers in a high-pressure reactor under different conditions. We changed the temperature, time and ratio between the used textile material and the solvent, and then we analyzed the resulting products. We found out that complete depolymerisation was achieved at following conditions: T = 250 ° C and t = 10 min (sample D2).
Keywords:chemical recycling, PET degradation, terephthalic acid, IR spectroscopy


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