Prikazano Главна колекција / Main Collection za autora "Petković, Branka"
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Hydrolytic, thermal and radiation stability of modified urea-formaldehyde composites: influence of montmorillonite particle size
Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Jovanović, Tijana; Kostić, Marija; Petković, Branka; Marković, Gordana; Porobić, Slavica; Papan, Jelena; Marinović-Cincović, Milena (Elsevier, 2022-06-15)Urea-formaldehyde (UF) composites with a formaldehyde/urea (FA/U) ratio = 0.8 and different particle sizes of montmorillonite (MMT), namely UF/KSF and UF/K10 were synthesized. The hydrolytic stability of modified UF ... -
Hydrolytic, thermal, and UV stability of urea-formaldehyde resin/thermally activated montmorillonite nanocomposites
Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Petković, Branka; Jovanović, Tijana; Marković, Gordana; Porobić, Slavica; Papan, Jelena; Marinović-Cincović, Milena (Wiley, 2020-09-16)Urea-formaldehyde resin (F/U ratio of 0.8)/thermally activated montmorillonite (UF/ΔTK10) nanocomposite was synthesized. The hydrolytical, thermal, and UV radiation stability of UF/ΔTK10 nanocomposites are determined. UF ... -
The influence of different doses of γ-radiation on the hydrolytic stability of modified urea-formaldehyde (UF) resins
Jovanović, Vojislav; Samaržija-Jovanović, Suzana; Jevtić, Sonja; Petković, Branka; Marković, Gordana; Marinović-Cincović, MilenaZbog emisije formaldehida (СН2О) iz drvenih proizvoda, gde se urea- formaldehidne (UF) smole, izmedu ostalog, koriste za impregnaciju drvenih panela koje se koriste u unutrasnjosti stambenih i drugih objekata ... -
The influence of modification and the particle size of the montmorillonite on the hydrolytic stability of urea-formaldehyde composite
Samaržija-Jovanović, Suzana; Petković, Branka; Jovanović, Tijana; Jovanović, Vojislav; Marković, Gordana; Marinović-Cincović, Milena; Budinski-Simendić, Jaroslava (Materials Research Society of Serbia, 2019-09-02)Urea–formaldehyde (UF) resin adhesive is a polymeric condensation product of formaldehyde with urea and is considered as one of the most important wood adhesives. In spite of some advantages such as lower cost, fast curing, ... -
The influence of montmorillonite activating method on the hydrolytic stability of urea-formaldehyde resin
Kostić, Marija; Čanaćević, Milena; Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Petković, Branka; Marković, Gordana; Budinski-Simendić, Jaroslava (Faculty of Technology, Leskovac, 2019-10-18)Montmorillonite clays are of great importance for processes such as adsorption and catalysis and polymer composites fabrication . The textural properties of this filler can be modified to increase their application. In ... -
The influence of the modification of the montmorillonite KSF and K10 on the hydrolytic stability of UF composites
Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Petković, Branka; Kostić, Marija; Jovanović, Tijana; Marković, Gordana; Marinović-Cincović, Milena (2021-09-24)In this work, the hydrolytic stability of composites based on the urea-formaldehyde resin (UF) and montmorillonite-MMT (K1 0 and KSF) as a formaldehyde (FA) scavenger was investigated. K10 and KSF were activated by sodium ... -
The influence of the type of activation of the montmorillonite of hydrolytic stability of the urea-formaldehide nanocomposite
Čanaćević, Milena; Kostić, Marija; Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Petković, Branka; Marković, Gordana; Budinski-Simendić, Jaroslava (University of Novi Sad, Faculty of Technology Novi Sad, 2019-10-10)In this work the hydrolytic stability of nano-composites based on urea-formaldehyde resin (UF) and montmorillonite (K10) as formaldehyde scavenger was investigated. K10 was activated by sulfuric acid (H2SO4) with and without ... -
Iron Oxide Nanoparticles: Synthesis, Characterization and Application
Laban, Bojana; Milenković, Mila; Petković, BrankaIn this work, we present a review of the simple synthesis of iron(III)-oxide nanoparticles (Fe2O3 NPs), their characterization and potential application as nanosorbents and voltammetric sensors. Fe2O3 NPs were obtained ... -
KORELACIJA IZMEĐU NAČINA AKTIVIRANJA MONTMORILONITA K10 I SADRŽAJA FORMALDEHIDA U UREA-FORMALDEHIDNIM KOMPOZITIMA
Ristić, Mirjana; Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Petković, Branka; Kostić, Marija; Jovanović, Tijana; Marinović-Cincović, Milena (Faculty of Management Herceg Novi, 2022-05-26)U ovom radu je izvršeno poređenje načina aktiviranja montmorilonita (MMT) K10 sa sadržajem formaldehida (FA) u urea-formaldehidnim (UF) kompozitima. Uzorci MMT-a K10 su aktivirani na dva načina: termički i pomoću sumporne ... -
A mini review of electroanalitical methods for pesticides quantification
Jevtić, Sonja; Stanković, Dalibor; Jokić, Anja; Petković, BrankaThis review paper shows the progress made in the last five years in electrochemical methods applied for the purpose of detection and quantification of pesticides - nowadays the most serious pollutants of the environment. ... -
Morfološka i elektrohemijska karakterizacija nanočestica srebra i gvožđe-oksida namenjenih za elektroanalizu
Pantović, Tijana; Jovanović, Filip; Petković, Branka; Laban, BojanaNanočestice metala i oksida metala (NPs) privlače pažnju mnogih istraživača zbog svojih jedinstvenih optičkih i električnih svojstva. Ove nanočestice nalaze primenu u biologiji, medicini, kao i u elektronici, za izradu ... -
Nano-Fe2O3 particles as voltammetric signal amplifiers in sensing of heavy metals and pesticides
Milenković, Mila; Jevtić, Sonja; Laban, Bojana; Petković, Branka; Jokić, AnjaNanočestice na bazi oksida gvožđa (NPs) su privukle veliku pažnju imajući u vidu njihove fizičke, posebno magnetne, i hemijske osobine. U ovom istraživanju su nanočestice gvožđe(III)-oksida (Fe2O3 NPs) sintetisane jednostavnim ... -
Nano-silica-based urea-formaldehide composite with some derivates of coumarin as formaldehyde scavenger: hydrolitycal and thermal stability
Jovanović, Vojislav; Samaržija-Jovanović, Suzana; Petković, Branka; Jovanović, Slaviša; Marković, Gordana; Porobić, Slavica; Marinović-Cincović, Milena (Springer Nature, 2021-01-25)The hydrolytic stability of two nano-SiO2-based UF composites with derivates of coumarin (names as K-1 and K-2) was investigated. K-1 is 3-nitro-4-(p-tolylamino)-2H-chromen-2-one and K-2: 4-((3-nitro-2-oxo-2H-chromen-4-y ... -
Optimization study of the azamethiphos degradation using chlorine dioxide
Pergal, Marija; Kuč, Dragana; Kodranov, Igor; Pergal, Miodrag; Stanković, Dalibor; Petković, Branka; Manojlović, DraganIn the present study, the degradation of azamethiphos using chlorine dioxide was studied. The optimization of the azamethiphos degradation in terms of chloriпe dioxide dosage, different time of degradation and at different ... -
Poly(dimethylsiloxane) modified polymers: Synthesis, structure and physical properties
Pergal, Marija; Balaban, Milica; Stanković, Dalibor; Petković, BrankaPoly(dimethylsiloxane)s (PDMS) have one of the lowest values of glass transition temperature among synthetic polymers, and indicate low-temperature flexibility, excellent thermal, thermo-oxidative and ultraviolet stability, ... -
Quantification of organophosphorus pesticide azamethiphos using electroanalytical approach
Vukojević, Vesna; Đurđić, Slađana; Jevtić, Sonja; Pergal, Marija; Petković, Branka; Stanković, DaliborIn this work, for the first time, we proposed electrochemical behavior and development of analytical procedure for quantification of pesticide azamethiphos, using boron doped diamond (BDD) electrode. It was found that ... -
Radiation stability and thermal behaviour of modified UF resin using biorenewable raw material-furfuryl alcohol
Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Petković, Branka; Jovanović, Slaviša; Marković, Gordana; Porobić, Slavica; Marinović-Cincović, Milena (Elsevier, 2019-06-15)The thermal stability of organic-inorganic nano-composites prepared by a two-stage polymerization of urea-formaldehyde resin (UF) with furfuryl alcohol (FA) and TiO2 before and after irradiation has been researched. The ... -
A Sensitive Voltammetric Sensor for Caffeic Acid Made from Thermolised Modified UF Resins With Incorporated Fe(III) and Ti(IV) Oxide Particles
Petković, Branka; Kostić, Marija; Samaržija-Jovanović, Suzana; Ivanović, Aleksandra; Laban, Bojana; Veljović, Djordje; Stanković, Dalibor (University of Novi Sad, Faculty of Technology Novi Sad, 2022-10-20)Domestic high performance electrode material was prepared by thermolysis of in situ synthesized urea-formaldehyde (UF) resins modified with Fe(III) nitrate and Ti(IV) oxide in different combinations: iron salt and UF resins ... -
A single drop histamine sensor based on AuNPs/MnO2 modified screen-printed electrode
Knežević, Sara; Ognjanović, Miloš; Nedić, Nemanja; Mariano, José; Milanović, Zorana; Petković, Branka; Antić, Bratislav; Vranješ Djurić, Sanja; Stanković, DaliborIn order to ensure high food quality, one of the prime importance is the detection and quantification of histamine, well known marine food poison. In this work, we constructed novel electrochemical biosensor for the detection ... -
Sinteza praha nanočestica srebra
Laban, Bojana; Veljović, Đorđe; Petković, Branka; Jokić, AnjaNanočestice plemenitih metala (NPs) od velikog su interesa zbog svojih izvanrednih optičkih, hemijskih i fizičkih svojstava1. Nanočestice srebra (Ag NPs) privukle su posebnu pažnju zbog njihove primene u različitim oblastima. ...