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master's thesis
Priprema i karakterizacija polimernih mješavina na osnovi termoplastičnog poliuretana i polilaktida
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. urn:nbn:hr:149:462046
Pintarić, Helena
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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Pintarić, H. (2021). Priprema i karakterizacija polimernih mješavina na osnovi termoplastičnog poliuretana i polilaktida (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:462046

Pintarić, Helena. "Priprema i karakterizacija polimernih mješavina na osnovi termoplastičnog poliuretana i polilaktida." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:462046

Pintarić, Helena. "Priprema i karakterizacija polimernih mješavina na osnovi termoplastičnog poliuretana i polilaktida." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:462046

Pintarić, H. (2021). 'Priprema i karakterizacija polimernih mješavina na osnovi termoplastičnog poliuretana i polilaktida', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 29 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:462046

Pintarić H. Priprema i karakterizacija polimernih mješavina na osnovi termoplastičnog poliuretana i polilaktida [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2021 [cited 2024 November 29] Available at: https://urn.nsk.hr/urn:nbn:hr:149:462046

H. Pintarić, "Priprema i karakterizacija polimernih mješavina na osnovi termoplastičnog poliuretana i polilaktida", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:149:462046

Metadata
TitlePriprema i karakterizacija polimernih mješavina na osnovi termoplastičnog poliuretana i polilaktida
Title (english)Preparation and characterization of thermoplastic polyurethane/polylactide based polymer blends
AuthorHelena Pintarić
MentorEmi Govorčin Bajsić (mentor)
Committee memberEmi Govorčin Bajsić (predsjednik povjerenstva)
Committee memberLjerka Kratofil Krehula (član povjerenstva)
Committee memberIgor Sutlović (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2021-07-16, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U posljednje vrijeme polilaktid (PLA) privlači veliku pozornost kao potencijalna ekološka zamjena polimerima na bazi nafte. Njegovu primjenu najviše ograničava krhkost s malom otpornošću na udarce i mala fleksibilnost. Poboljšanje žilavosti PLA, može se postići termoplastičnim poliuretanom (TPU) visoke žilavosti pripremom PLA/TPU mješavina za široko područje primjene. Cilj ovog rada bio je pripraviti i ispitati PLA/TPU mješavine. Istražen je utjecaj TPU-a na morfološku strukturu, kemijski sastav, toplinska i mehanička svojstva PLA/TPU mješavina primjenom pretražnog elektronskog mikroskopa (SEM), infracrvene spektroskopije (FTIR), diferencijalne pretražne kalorimetrije (DSC) i mehaničke kidalice. Polimerne mješavine PLA/TPU (80/20, 60/40, 50/50, 40/60 i 20/80) te čisti polimeri pripremljeni su u Brabender gnjetilici. Uzorci čistih polimera i mješavina dobiveni su prešanjem na hidrauličkoj preši. Na temelju dobivenih rezultata TPU i PLA su kompatibilni. Pripremljene polimerne mješavine pokazuju djelomičnu mješljivost te se javljaju interakcije između ova dva polimera. Povećanjem udjela TPU-a dolazi do poboljšanja žilavosti, te smanjenja Young-ovog modula, prekidne čvrstoće i stupanja kristalnosti.
Abstract (english)
Recently, polylactide (PLA) has attracted much attention as a potential ecological replacement for petroleum-based polymers. Improving the toughness of PLA can be achieved with thermoplastic polyurethane (TPU) elastomer with a high toughness to prepare PLA/TPU blends suitable for a wide range of applications. The aim of this work was to prepare and characterize the PLA/TPU blends. Morphology, chemical composition, thermal and mechanical properties of the PLA/TPU blends were characterized by means of scanning electron microscopy (SEM), Fourier transform infrared spectra (FTIR), differential scanning calorimetry (DSC) and tensile test using universal testing machine. PLA/TPU blends (80/20, 60/40, 50/50, 40/60 i 20/80) and pure polymers were prepared in a Brabender mixer. The specimenes of the neat polymers and their blends were molded in hydraulic press. Based on the obtained results TPU and PLA are compatible. The prepared polymer blends are partially miscible because of the interactions between this two polymers. Increasing the TPU content increases toughness, while decrease the Young module, the tensile strength and degree of crystallinity.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:462046
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
Embargo expiration date: 2021-07-16
Terms of useLicence In copyright icon
Created on2023-04-11 08:56:56