20.500.12556/DKUM-63313 Določevanje stopnje depolimerizacije PET s pomočjo titracij Determination of the degree of depolymerisation of PET by means of titrations Zaradi naraščanja svetovnega prebivalstva in posledično večje proizvodnje, uporabe in odlaganja polimernih materialov, je recikliranje le-teh postala nujnost . Polietilen tereftalat (PET) je v tekstilni industriji najbolj uporabljen sintetični material, kljub temu pa je recikliranje PET-a iz tekstilnih materialov manj raziskano področje. V diplomskem delu smo PET vlakna depolimerizirali s postopkom nevtralne hidrolize, stopnjo depolimerizacije pa določili s pomočjo titracij. Rezultati so pokazali, da se je PET najbolje razgradil pri temperaturi 250 oC, tlaku 39 barov, razmerju PET : voda 1:10 ter reakcijskem času 30 min. Titracije so se izkazale za primerno metodo za ocenitev stopnje razgradnje PET-a. Zaključki diplomske naloge so obetavni in odpirajo nove možnosti raziskav na področju titracij kot hitrih in enostavnih metod. Due to the increasing world population and the resulting increased production, use and disposal of plastic materials and recycling them has become a necessity. Polyethylene terephthalate (PET) is in the textile industry the most used synthetic material, however, the recycling of PET textile materials is less researched area. In this thesis PET fibers were depolymerized with the procedure neutral hydrolysis and the rate of depolymerization was determined by titration. The results showed that PET was most degraded at a temperature of 250 °C, a pressure of 39 bar, a ratio of PET: water 1:10 and a reaction time of 30 min. Titration have proven to be an appropriate method to evaluate the degree of degradation of PET. The conclusions of the thesis are promising and opening up new possibilities for research in the field of titrations as quick and easy methods. depolimerizacija polietilen tereftalat nevtralna hidroliza recikliranje titracije depolymerization polyethylene terephthalate neutral hydrolysis recycling titration true true false [V. Spahič] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2016-09-08 18:41:08 2016-10-05 12:08:16 2022-07-02 03:06:19 2019-07-11 13:23:50 2016 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 678.095.268(043.2) 20426518 URN:SI:UM:DK:ATILNLYU UN_Spahic_Vanja_2016.pdf UN_Spahic_Vanja_2016.pdf 1 6251569717368AAC7745B674D385E055 cd17b3186b1cbfd1ac5ce7be755000d22f35efaceb4ea9a8ad276940bdae9b33 be914b39-7c0d-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=107245 Fakulteta za strojništvo 0 0 0