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master's thesis
Priprema vodljivih tinti za inkjet ispis temeljenih na ugljikovim nanocjevčicama
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. urn:nbn:hr:149:999688
Lenac, Katarina
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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Lenac, K. (2021). Priprema vodljivih tinti za inkjet ispis temeljenih na ugljikovim nanocjevčicama (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:999688

Lenac, Katarina. "Priprema vodljivih tinti za inkjet ispis temeljenih na ugljikovim nanocjevčicama." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:999688

Lenac, Katarina. "Priprema vodljivih tinti za inkjet ispis temeljenih na ugljikovim nanocjevčicama." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:999688

Lenac, K. (2021). 'Priprema vodljivih tinti za inkjet ispis temeljenih na ugljikovim nanocjevčicama', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 07 August 2024, https://urn.nsk.hr/urn:nbn:hr:149:999688

Lenac K. Priprema vodljivih tinti za inkjet ispis temeljenih na ugljikovim nanocjevčicama [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2021 [cited 2024 August 07] Available at: https://urn.nsk.hr/urn:nbn:hr:149:999688

K. Lenac, "Priprema vodljivih tinti za inkjet ispis temeljenih na ugljikovim nanocjevčicama", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:149:999688

Metadata
TitlePriprema vodljivih tinti za inkjet ispis temeljenih na ugljikovim nanocjevčicama
Title (english)Development of inkjet printable conductive inks based on carbon nanotubes
AuthorKatarina Lenac
MentorPetar Kassal (mentor)
Committee memberPetar Kassal (predsjednik povjerenstva)
Committee memberIrena Ivanišević (član povjerenstva)
Committee memberMarin Kovačić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2021-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Razvoj naprednih oblika tehnologije doveo je do sve složenijih zahtjeva za njihove električne i mehaničke izvedbene značajke. Metode ispisa se nameću kao potencijalni kandidati za masovnu proizvodnju fleksibilnih elektroničkih komponenti u koje se ubrajaju zasloni, diode, tranzistori, baterije, solarne ćelije i senzori. Među njima se ističe tehnologija inkjet ispisa, zbog jednostavnog principa rada, primjenjivosti nad raznim vrstama podloga te minimalne količine otpada. Ugljikove nanocjevčice se sve češće primjenjuju u inženjerstvu materijala zbog njihovih superiornih karakteristika kao što su izvrsna električna i toplinska vodljivost, mehanička izdržljivost te mogućnost funkcionalizacije koja im omogućuje široku primjenu. Glavni izazov primjene ovog nanomaterijala je dispergiranje u uobičajenim otapalima zbog njihovih jedinstvenih geometrijskih karakteristika, jakih van der Waalsovih sila i nepolarne prirode koje dovode do neželjenog aglomeriranja nanocjevčica. Cilj ovog Diplomskog rada bio je prirediti stabilne i električki vodljive disperzije višestjenčanih ugljikovih nanocjevčica (eng. Multi-Walled Carbon Nanotubes, MWCNT) u dostupnim polarnim otapalima, koje bi se mogle podvrgnuti inkjet ispisu. Pri tome, korišteni su komercijalno dostupni stabilizatori polivinil butiral (PVB) i SOLSPERSE 20000 sa sinergistom SOLSPERSE 12000. Postignut je velik broj stabilnih disperzija korištenjem navedenih stabilizatora, u rasponu početnih koncentracija 0,5 – 15 mg mL^–1. Nakapavanjem disperzija na različite podloge, utvrđeno je njihovo razlijevanje i određen je površinski otpor u širokom rasponu vrijednosti od 0,425 do 6620 kΩ sq^–1. Uklonjene su veće nakupine aglomeriranih nanocjevčica, a potom su definirana fizikalna svojstva važna za ispis. Utvrđeno je da disperzije nemodificiranih MWCNT u izopropanolu te funkcionalizirane MWCNT–COOH u mješavini vode i etanola početnih koncentracija 3 mg mL^–1 zadovoljavaju preduvjete inkjet ispisa te su takve tinte uspješno ispisane na polimerne podloge.
Abstract (english)
Recent development of advanced forms of technology has led to increasingly complex electrical and mechanical performance requirements. Printing methods are emerging as potential candidates for the mass production of flexible electronic devices, including displays, diodes, transistors, batteries, solar cells, and sensors. Among them, inkjet printing technology stands out due to the operation simplicity, applicability over various substrates, and the minimum amount of waste. The usage of the carbon nanotubes has increased in materials engineering due to their superior characteristics, such as excellent electrical and thermal conductivity, mechanical durability, and functionalization that allows them to be widely used. The main challenge of applying this nanomaterial is dispersion in common solvents due to their unique geometric characteristics, strong van der Waals interactions, and non-polarity leading to unwanted agglomeration of nanotubes. The aim of this study was to prepare stable and electrically conductive dispersions of Multi-Walled Carbon Nanotubes (MWCNT) in available polar solvents, which could be subjected to inkjet printing. While performing the study, commercially available stabilizers polyvinyl butyral (PVB) and SOLSPERSE 20000 with the synergist SOLSPERSE 12000 were used. Many stable dispersions were achieved by using the mentioned stabilizers, in the range of initial concentrations of 0.5 – 15 mg mL^–1. By drop casting the dispersions on different substrates their spreading was determined. The sheet resistance was also determined in a wide range of values from 0.425 to 6620 kΩ sq^–1. Larger clusters of agglomerated nanotubes were removed, and then the physical properties necessary for printing were defined. Dispersions of unmodified MWCNTs in isopropanol and functionalized MWCNT–COOH in a mixture of water and ethanol at initial concentrations of 3 mg mL^–1 were found to meet the prerequisites for the inkjet printing and were successfully printed onto polymer foils.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:999688
ProjectNumber: UIP-2020-02-9139
Title: Fotonsko sinteriranje inkjet ispisanih elektrokemijskih senzora i biosenzora na plastičnim podlogama
Title: Photonic sintering for inkjet printed electrochemical sensors and biosensors on plastic substrates
Acronym: PrintEChemSens
Leader: Petar Kassal
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: UIP
Study programmeTitle: Applied Chemistry - Graduate study; specializations in: Environmental chemistry and green technologies, Advanced materials and technologies, Applied organic chemistry
Course: Advanced materials and technologies
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra primijenjene kemije (magistar/magistra primijenjene kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2023-04-14 11:25:37