Preparation and characterization of strontium aluminate/urea-formaldehyde composite: a solution for oxidation-induced darkening problem

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dc.contributor.authorKoçak G.
dc.contributor.authorÇelik Erbaş S.
dc.date.accessioned2024-07-22T08:02:49Z
dc.date.available2024-07-22T08:02:49Z
dc.date.issued2023
dc.description.abstractPurpose: This study aims to produce homogenously prepared polymer composites by adding two different strontium aluminate derivatives (Sr4Al14O25 and SrAl2O4) to urea-formaldehyde (UF) at different mass concentrations. In the context of this work those strontium-based derivatives were compared in terms of mechanical and luminescent characteristics. Additionally, sodium bicarbonate was integrated with the prepared composites to eliminate/minimize darkening problem, which might arise from the oxidation of Eu +2 to Eu2O3, on the surface of strontium aluminate/urea-formaldehyde composites. Design/methodology/approach: In this study, strontium aluminate/UF composite materials were produced using a compression molding technique. Their mechanical, thermomechanical and luminescence properties were investigated via various characterization methods. Particle size analysis was used to characterize phosphor derivatives, whereas scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX) was conducted for morphological examination. Findings: The darkening problem was prevented by the introduction of sodium bicarbonate into the composite systems. Based on the characterization and test results, the only addition of strontium aluminate reduced the mechanical properties. However, it was seen that the introduction of sodium bicarbonate into the composites improved those properties positively. The appropriate amounts of strontium aluminate and sodium bicarbonate were determined by conducting an experimental optimization study. The optimum composition of the composite materials was obtained by introducing 2% phosphor and 3% NaHCO3. Originality/value: The approach used in this study has provided a method to solve the darkening problem, which degrades the aesthetic appearance in industrial production. © 2022, Emerald Publishing Limited.
dc.identifier.DOI-ID10.1108/PRT-11-2021-0133
dc.identifier.issn03699420
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/12004
dc.language.isoEnglish
dc.publisherEmerald Publishing
dc.subjectAluminum compounds
dc.subjectCarbonates
dc.subjectComposite materials
dc.subjectCompression molding
dc.subjectEnergy dispersive spectroscopy
dc.subjectParticle size
dc.subjectParticle size analysis
dc.subjectPhosphors
dc.subjectScanning electron microscopy
dc.subjectSodium bicarbonate
dc.subjectStrontium compounds
dc.subjectUrea
dc.subjectAnalysis techniques
dc.subjectComposites material
dc.subjectDifferent mass
dc.subjectDynamic mechanical analyse technique
dc.subjectMass concentration
dc.subjectMechanical characteristics
dc.subjectPolymer composite
dc.subjectStrontium aluminate
dc.subjectStrontium aluminate/urea-formaldehyde composite material
dc.subjectUrea formaldehyde
dc.subjectLuminescence
dc.titlePreparation and characterization of strontium aluminate/urea-formaldehyde composite: a solution for oxidation-induced darkening problem
dc.typeArticle

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