Browsing by Author "Kostić, Marija"
Now showing items 1-12 of 12
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Applications of conductive polymers in modern technologies
Kostić, Marija; Samaržija-Jovanović, Suzana; Cakić, Suzana; Ristić, Ivan (University PIM, Banja Luka, Republic of Srpska, B&H, 2022-06-02)Polymers are the subject of intensive research and development, not only in science but also in industry. In the last few years, many studies have been conducted on conjugated polymers, and this study of polymers has ... -
Correlation between methods of activation of montmorilonite K10 and formaldehyde content in urea-formaldehyde composites
Ristić, Mirjana; Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Petković, Branka; Kostić, Marija; Jovanović, Tijana; Marinović-Cincović, Milena (Faculty of Management Herceg Novi, 2022-05-26)In this paper, the methods of activation of montmorillonite (MMT) K10 with the content of formaldehyde (FA) in urea-formaldehyde (UF) composites are compared. MMT K10 samples were activated in two ways: thermally(physical ... -
Cross-linked bio/inorganically modified urea-formaldehyde resins: influence of γ-radiation on formaldehyde content
Ristić, Mirjana; Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Petković, Branka; Kostić, Marija; Jovanović, Tijana; Marković, Gordana; Marinović-Cincović, Milena (2022-06-13)The effect of γ–irradiation on hydrolytic stability of nano-silica, nano-titania, and wood flour (WF) modified urea-formaldehyde (UF) resins was investigated. Modified UF resin with wood flour (Pinus silvestris L.) as ... -
Domestic material made by calcification of modified UF resins with incorporated Fe-particles-a sensitive platform for electroanalytical quantification of gallic acid.
Petković, Branka; Kostić, Marija; Samaržija-Jovanović, Suzana; Laban, Bojana; Veljović, Djordje; Stanković, Dalibor (University "Union Nikola Tesla", Belgrad, Serbia, 2021-09-24)In this work, we present domestic high performance electrode material prepared by thermolysis of in situ synthesized urea-formaldehyde (UF) resins modified with Fe(III) nitrate. For comparison, material produced ... -
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 ... -
INFLUENCE OF MODIFIED MONTMORILLONITES ON FORMALDEHYDE CONTENT IN UREA-FORMALDEHYDE/MONTMORILLONITE COMPOSITES
Ristić, Mirjana; Samaržija-Jovanović, Suzana; Jovanović, Vojislav; Kostić, Marija; Jovanović, Tijana; Marković, Gordana; Marinović-Cincović, Milena (University of Novi Sad, Faculty of Technology Novi Sad, 2022-10-20)The effect of different montmorillonites (KSF and K10) and their modifications (Na-KSF, Na-K10) on content of formaldehyde-FA (free and liberated) modified urea-formaldehyde (UF) composites was investigated. KSF and K10 ... -
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 ... -
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 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 ... -
Synthesis and characterization of pH-sensitive Saccharide modified polyurethane hydrogels – Effect of polyol, crosslinker and acid chain extender
Kostić, Marija; Cakić, Suzana; Ristić, Ivan; Marinović-Cincović, Milena; Nikolić, Ljubiša; Samaržija-Jovanović, Suzana (Univerzitet u Nišu - Tehnološki fakultet, Leskovac, 2021-07-10)Biodegradable polyurethanes can be the basis for drug delivery systems that are sensitive to external changes. pH-sensitive polyurethanes (PUs) have been used successfully as intravaginal rings and specific drug delivery ...