Optimiranje uvjeta izvlačenja prozirnih prevlaka iz sola

undergraduate thesis

• Title (english): Optimization of deposition conditions for transparent coatings from sol
• Author: Mateja Kolenić
• Mentor: Jelena Macan (mentor)
• Committee member: Jelena Macan (predsjednik povjerenstva)
• Committee member: Juraj Šipušić (član povjerenstva)
• Committee member: Anamarija Rogina (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2016-07-11, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Basic Technical Sciences; Materials

Abstract

Cilj ovog rada je ispitati kako pojedini parametri utječu na stvaranje ZnO prevlaka. Pripremljeni su solovi cinkova acetata dihidrata, koristeći dietanolamin ili heksametilentetraamin kao stabilizator te destiliranu vodu, izopropanol ili 1-metoksi-2-propanol kao otapalo. Ispitivan je utjecaj različitih otapala, amina, koncentracija cinkovog acetata te različitih omjera amina i cinkovog acetata. Uzorci pripravljenih solova ostavljeni su da stoje na sobnoj temperaturi do prelaska u čvrsto stanje, a potom su sušeni na 110 °C i kalcinirani na temperaturama od 200 do 500 °C. Iz sola su izvučene prevlake tehnikom uranjanja, sušene te kalcinirane pri prethodno navedenim uvjetima. Dio prevlaka je korišten kao podloga za rast igličastih kristala ZnO iz sola. Uzorci su karakterizirani rendgenskom difrakcijskom analizom, infracrvenom spektroskopijom, diferencijalnom pretražnom kalorimetrijom te pretražnom elektronskom mikroskopijom.

Abstract (english)

The aim of this study is to investigate effects of some parameters on preparation of ZnO coatings. Sol is prepared from zinc acetate dihydrate dissolved in isopropanol, 1-methoxy-2-propanol or distilled water. Diethanolamine or hexamethylenetetramine were used as a stabilizer. Influence of different solvents, amines, concentrations of zinc acetate and different ratios of amine and zinc acetate was investigated. Samples of sol were left on room temperature until they solidified. Then they were dried at 110 °C and annealed at 200 – 500 °C. Coatings from sol were prepared by dip coating method, dried and annealed as described above. Some of coatings are used as a substrate for growth of needle-like ZnO crystals from sol. All samples were characterized by X-ray diffraction, infrared spectroscopy, differential scanning calorimetry and scanning electron microscopy.

• Keywords: cinkov oksid; kristalizacija; morfologija; nanošenje uranjanjem; prevlake
• Keywords (english): zinc oxide; crystallization; morphology; dip coating; coatings
• Language: croatian
• URN:NBN: urn:nbn:hr:149:545325
• Study programme: Title: Chemical Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-12-05 10:03:22