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master's thesis
Termogravimetrijska analiza PEO/fenil hib-POSS nanokompozita
diplomski rad
2018. urn:nbn:hr:167:771405
Čelan, Mihaela
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Cite this document

Čelan, M. (2018). Termogravimetrijska analiza PEO/fenil hib-POSS nanokompozita : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:771405

Čelan, Mihaela. "Termogravimetrijska analiza PEO/fenil hib-POSS nanokompozita : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:771405

Čelan, Mihaela. "Termogravimetrijska analiza PEO/fenil hib-POSS nanokompozita : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:771405

Čelan, M. (2018). 'Termogravimetrijska analiza PEO/fenil hib-POSS nanokompozita : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 20 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:771405

Čelan M. Termogravimetrijska analiza PEO/fenil hib-POSS nanokompozita : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2018 [cited 2024 November 20] Available at: https://urn.nsk.hr/urn:nbn:hr:167:771405

M. Čelan, "Termogravimetrijska analiza PEO/fenil hib-POSS nanokompozita : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:167:771405

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Metadata
TitleTermogravimetrijska analiza PEO/fenil hib-POSS nanokompozita : diplomski rad
Title (english)Thermogravimetric analysis PEO/phenyl hib-POSS nanocomposite : diploma thesis
AuthorMihaela Čelan
MentorNataša Stipanelov-Vrandečić (mentor)
MBZ: 226264
Committee memberBranka Andričić (predsjednik povjerenstva)
Committee memberPero Dabić (član povjerenstva)
Committee memberNataša Stipanelov-Vrandečić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2018-10-30, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu ispitivana je priprema poli(etilen-oksid)/fenil hepta izobutil poliedarskog oligomernog silseskvioksan (PEO/fenil hib-POSS) nanokompozita metodom u otopini (voda/etanol, etanol) i u taljevini, s masenim postotcima fenil hib-POSS- a od 1, 3 i 5%. Također je istraživan utjecaj fenil hib-POSS-a na toplinsku stabilnost PEO-a termogravimetrijskom analizom. Iz oblika TG i DTG krivulja zaključuje se da se toplinska razgradnja za sva četiri uzorka odvija u jednom razgradnom stupnju pri svim brzinama zagrijavanja. Na temelju eksperimentalnih TG krivulja snimljenih pri različitim brzinama zagrijavanja određeni su kinetički parametri izokonverzijskim metodama, Friedmanovom i Kissinger-Akahira-Sunose metodom. Iz ovisnosti aktivacijske energije izračunate Friedmanovom metodom uočava se da dodatak POSS-a snižava aktivacijsku energiju razgradnje PEO-a. Aktivacijske energije izračunate KAS metodom niže su samo za uzorak s 5% POSS-a.
Abstract (english)
In this thesis the preparation of poly(ethylene-oxide)/phenyl hepta isobutyl polyhedral oligomeric silsesquioxane (PEO/fenil hib-POSS) nanocomposites by the method in solution (water / ethanol, ethanol) and in melts, with phenyl hib-POSS mass percentage of 1, 3 and 5% was examined. The influence of phenyl hib-POSS on thermal stability of PEO was also tested by thermogravimetric analysis. From the shape of TG and DTG curves, the conclusion is that the thermal degradation of all four samples takes place in one degradation stage in all four heating rates. Based on the experimental TG curves recorded at different heating rates, kinetic parameters were determined by the isoconversional methods, Friedman and Kissinger-Akahira-Sunose method. From the dependency of the activation energy calculated using Friedman method it is noticed that the POSS addition reduces the activation energy of degradation of PEO. Activation energy calculated by the KAS method is lower only for the 5% POSS sample.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:771405
Study programmeTitle: Chemical Technology; specializations in: Materials, Environmental Protection, Mediteranean Cultures
Course: Materials
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteKljučne riječi doradio knjižničar/ Key words are revised by the librarian
Created on2019-06-14 11:13:30