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master's thesis
Priprava i svojstva ugljikove nanocjevčice/PCL nanokompozita
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. urn:nbn:hr:149:827380
Bijelić, Vesna
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Bijelić, V. (2017). Priprava i svojstva ugljikove nanocjevčice/PCL nanokompozita (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:827380

Bijelić, Vesna. "Priprava i svojstva ugljikove nanocjevčice/PCL nanokompozita." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:827380

Bijelić, Vesna. "Priprava i svojstva ugljikove nanocjevčice/PCL nanokompozita." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:827380

Bijelić, V. (2017). 'Priprava i svojstva ugljikove nanocjevčice/PCL nanokompozita', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 29 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:827380

Bijelić V. Priprava i svojstva ugljikove nanocjevčice/PCL nanokompozita [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2017 [cited 2024 November 29] Available at: https://urn.nsk.hr/urn:nbn:hr:149:827380

V. Bijelić, "Priprava i svojstva ugljikove nanocjevčice/PCL nanokompozita", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:149:827380

Metadata
TitlePriprava i svojstva ugljikove nanocjevčice/PCL nanokompozita
Title (english)Preparation and properties of carbon nanotubes/PCL nanocomposites
AuthorVesna Bijelić
MentorEmi Govorčin Bajsić (mentor)
Committee memberEmi Govorčin Bajsić (predsjednik povjerenstva)
Committee memberLjerka Kratofil Krehula (član povjerenstva)
Committee memberNevenka Vrbos (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2017-07-07, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Chemical Engineering in Material Development
Abstract
Polimerni nanokompoziti su kompoziti kod kojih se barem jedna faza nalazi u nanodimenzijama. Različiti polimeri kao što su termoplasti i elastomeri mogu se koristiti za proizvodnju polimernih nanokompozita. Nanopunila mogu poboljšati mehanička svojstva samih polimernih materijala ako su manjih dimenzija od 100 nm. Tema istraživanja ovog rada je utjecaj višestjenih ugljikovih nanocjevčica (multiwalled carbon nanotubes - MWCNT) na toplinska svojstva, proces kristalizacije, mehanička svojstva te na morfologiju čistog polikaprolaktona (PCL) i nanokompozita (PCL/CNT) s različitim udjelom nanocjevčica. Nanokompoziti PCL/CNT dobiveni su na dva načina, umješavanjem MWCNT u taljevinu PCL-a u Brabender gnjetilici i dodavanjem MWCNT u otopinu PCL-a i tetrahidrofurana (THF). Toplinska karakterizacija materijala provedena je tehnikama toplinske analize: diferencijalnom pretražnom kalorimetrijom (DSC); dinamičko mehaničkom analizom (DMA). Mehanička svojstva ispitana su na mehaničkoj kidalici, a morfologija PCL i PCL/CNT nanokompozita snimljena je pretražnim elektronskim mikroskopom (SEM). Dobiveni rezultati pokazali su da je bolji način pripreme nanokompozita PCL/CNT u Brabender gnjetilici u odnosu na otopinu PCL/THF.
Abstract (english)
Polymer nanocomposites are composites in which at least one phase is expressed in nanometers. Different polymers such as thermoplastic and elastomers can be used for polymer nanocomposites preparation. Nanofillers can improve mehanical properties of polymer materials if they are smaller than 100nm. The aim of this study is the influence of multiwalled carbon nanotubes (MWCNT) on thermal properties, crystallization process, mehanical properties and morphology of polycaprolactone (PCL) and nanocomposites (PCL/CNT) with different weight ratios of MWCNT. PCL/CNT nano-composites were obtained in two ways, first one was by mixing MWCNT in PCL melt in Brabender mixer and the second one was dissolving PCL in tetrahydrofuran (THF) and than adding MWCNT to solution. Thermal characterization was obtained by thermal analysis: differential scanning calorimetry (DSC); dynamic mechanical analysis (DMA). Mehanical properties were determined with universal testing machine. The morphology of PCL and PCL/CNT nanocomposites was recorded by scanning electron microscopy (SEM). The obtained results were compared and showed that a better way of preparing PCL/CNT nanocomposites is in Brabender mixer than dissolving PCL in THF.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:827380
Study programmeTitle: Materials Science and Engineering - Graduate study
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
Created on2019-10-02 13:05:44