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Title:Trajnostna proizvodnja pigmenta za aplikacije z visoko dodano vrednostjo
Authors:ID Helbel, Maja (Author)
ID Ban, Irena (Mentor) More about this mentor... New window
Files:.pdf MAG_Helbel_Maja_2024.pdf (5,16 MB)
MD5: ABBB5A7E242441B462660E33B7D6F50F
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V okviru magistrskega dela smo preučevali vpliv različnih omakal, površinsko aktivnih sredstev, modifikatorjev površine in procesnih pogojev na kakovost pigmentov v končnih aplikacijah. Cilj sta bila optimizacija pogojev pri končni obdelavi pigmenta TiO2 in razvoj posebnih modifikacij površin za povečanje predelovalnih sposobnosti TiO2. Uspešno nam je uspelo razviti pigment z izboljšano disperzibilnostjo in visoko vremensko obstojnostjo ter visoko kakovosten pigment za tiskarske barve. Flokulacijo in aglomeracijo smo preprečili z ustreznim omočenjem, dispergiranjem in s stabilizacijo pigmentne disperzije. Površinska modifikacija pigmenta TiO2 je vključevala obarjanje hidratiziranih aluminijevih oksidov na površini delcev TiO2. S prilagajanjem površinskih lastnosti s fino regulacijo procesnih pogojev med nanašanjem anorganskih prekurzorjev smo dosegli boljšo procesibilnost in stabilnost pigmenta ter ožjo porazdelitev velikosti delcev. Poleg tega smo izvedli še implementacijo ustreznih aditivov za dodatno organsko modifikacijo pigmenta. Učinkovitost površinske obdelave smo določali z uporabo transmisijskega elektronskega mikroskopa. Z merjenjem zeta potenciala smo določili elektrokemične lastnosti pigmentnih delcev. Za določitev učinkovitosti razprševanja svetlobe smo uporabili UV-Vis spektroskopijo. Optične lastnosti pigmenta v končnem proizvodu smo preučevali z določitvijo efektivnosti sipanja svetlobe, podtona, opacitete in sijaja.
Keywords:titanov dioksid, pigment, površinska obdelava, aluminijev hidroksid, disperzibilnost
Place of publishing:Maribor
Year of publishing:2024
PID:20.500.12556/DKUM-90666 New window
Publication date in DKUM:25.09.2024
Views:0
Downloads:11
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:13.09.2024

Secondary language

Language:English
Title:Sustainable pigment production for high value-added applications
Abstract:As part of the master's thesis, the influence of different wetting agents, surfactants, surface modifiers, and process conditions on the quality of pigments in final applications was investigated. The aim was to optimise the conditions in the final processing of the TiO2 pigment and to develop specific surface modifications to increase the processability of TiO2. We successfully developed a pigment with improved dispersibility and high weather stability, as well as a high-quality pigment for printing inks. Flocculation and agglomeration were prevented through proper wetting, dispersing and stabilisation of the pigment dispersion. Surface modification of the TiO2 pigment involved precipitation of hydrous aluminium oxides on the surface of the TiO2 particles. By tailoring the surface properties through fine control of the process conditions during the application of inorganic precursors, we achieved better processability and stability of the pigment, as well as a narrower particle size distribution. Additionally, appropriate additives were implemented for further organic modification of the pigment. The effectiveness of the surface treatment was determined using a transmission electron microscopy. The electrochemical properties of the pigment particles were measured by zeta potential analysis. UV-Vis spectroscopy was used to assess light scattering efficiency. The optical properties of the pigment in the final product were evaluated by determining its light scattering efficiency, undertone, opacity and gloss.
Keywords:titanium dioxide, pigment, surface treatment, aluminium hydroxide, dispersion


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