Polymer Composites
(Wiley)
• 15 Aug 2019
Porobić, Slavica • Marković, Gordana • Ristić, Ivan • Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Budinski-Simendić, Jaroslava • Marinović-Cincović, Milena
In this applicative work, two types of silica filler were used to increase the adhesion strength between steel and elastomeric hybrid materials based on chlorosulfonated polyethylene rubber (CSM) and polychloroprene rubber (CR) as network precursors. Precipitated silica (PS) with the average size of primary particles 15 nm and diatomaceous earth (DE) with the average size of primary particles 28 μm were used to ascertain differences in metal-elastomer compounds adhesion strength caused by differ ...
Polymer Composites
(Wiley)
• 10 Apr 2019
Jovanović, Vojislav • Jovanović, Slaviša • Marković, Gordana • Samaržija-Jovanović, Suzana • Porobić, Slavica • Budinski-Simendić, Jaroslava • Marinović-Cincović, Milena
The powder recycled rubber (PRR) can be used as a filler and a modifier for elastomeric materials and asphalt. Composites based on elastomers and recycled rubber powders are a serious challenge for the environment. The main goal of this paper was to study the effect of rubber powder on the mechanical properties of elastomeric composites based on three precursors of the network. Triple blends were prepared using non-polar natural rubber (NR), polyisoprene rubber (BR), and styrene-butadiene rubber ...
Polymer Composites
(Wiley)
• 10 Apr 2019
Jovanović, Vojislav • Samaržija-Jovanović, Suzana • Petković, Branka • Milićević, Zoran • Marković, Gordana • Marinović-Cincović, Milena
Two biocomposites based on cellulose (UFC) and starch modified urea formaldehyde (UFS) resin (F/U ratio of 0.8) were synthesized using the same procedure. The hydrolitical, thermal, and radiation stability of biocomposites are determined. Also, released formaldehyde during the acid hydrolysis is determined. Biocomposites based on modified UF resin have been irradiated with (50 kGy). Cellulose modified UF resin after γ-radiation has 1.38% released formaldehyde; unmodified UF resin has 2.21% relea ...
Journal of Thermoplastic Composite Materials
(SAGE)
• 24 Feb 2018
Jovanović, Slaviša • Samaržija-Jovanović, Suzana • Marković, Gordana • Jovanović, Vojislav • Adamović, Tijana • Marinović-Cincović, Milena
The goal of this work was to synthesize and characterize ternary rubber blends based on polyisoprene (natural rubber (NR)), polybutadiene rubber (BR), and styrene–butadiene rubber (SBR) (NR/BR/SBR = 25/25/50) reinforced with different loading silica (SiO2) nanoparticles (0–100 part per hundred parts of rubber (phr)). The specimens were subjected to thermooxidative aging at 100°C, for two times: at 72 and 168 h, respectively, and then mechanically stretched to fracture by tension with a Zwick 142 ...
Journal of Thermal Analysis and Calorimetry
(Springer)
• 09 Jul 2022
Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Jovanović, Tijana • Petković, Branka • Marković, Gordana • Porobić, Slavica • Marinović-Cincović, Milena
This work investigated the thermal characteristics of irradiated composite materials formulated on the urea–formaldehyde resin (UF) and differently activated montmorillonite (K10). UF resin with molar ratio F:U = 0.8 was synthesized in situ with differently activated K10. K10 was activated by heating at 400 °C, with sulfuric acid (H2SO4) without and with magnetic stirring. The samples are marked with TK10, AK10, ASK10, UF/TK10, UF/AK10, and UF/ASK10, respectively. The samples were identified b ...
Journal of Thermal Analysis and Calorimetry
(Springer)
• 11 Feb 2022
Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Jovanović, Tijana • Petković, Branka • Marković, Gordana • Porobić, Slavica • Marinović-Cincović, Milena
In this study, the thermal and hydrolytic properties of composite systems based on the urea–formaldehyde resin (UF) and eco-friendly montmorillonite (K10) as formaldehyde (FA) scavenger were examined. UF resin with molar ratio FA:U = 0.8 was synthesized in situ with inactivated, and activated K10. K10 was activated by sulfuric acid (H2SO4) with and without magnetic stirring. The samples are marked with K10(H2SO4),K10(H2SO4)ST, UF/K10(H2SO4), and UF/K10(H2SO4)ST, respectively. X-ray diffraction a ...
Composites: Part B: Engeneering
(Elsevier)
• 15 Jun 2019
Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Petković, Branka • Jovanović, Slaviša • Marković, Gordana • Porobić, Slavica • Marinović-Cincović, Milena
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 two resins of urea-formaldehyde–TiO2 composites, named: UF/TiO2 and UF/TiO2/FA, were synthesized. The thermal stability of obtained materials was studied by non-isothermal thermo-gravimetric analysis (TG), differential thermal gravimetry (DTG) and differential thermal analysis (D ...
Gamma Irradiation:Properties, Effect and Development of New Materials
(Nova Science Publisher)
• 11 Aug 2021
Marković, Gordana • Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Budinski-Simendić, Jaroslava • Marinović-Cincović, Milena
Gamma radiations are used for sterilization processes in medical devices, food industry as well as in nuclear power plants or aerospace. Gamma irradiation is a very convenient tool for the modification of polymeric materials. The irradiation of polymeric materials with ionizing radiation (gamma rays, X-rays, accelerated electrons, ion beams, etc.) lead to the formation of very reactive intermediates, free radicals, ions and excited states. These intermediates can follow several reaction paths th ...
Reactive and Functional Polymers Volume Two: Modification Reactions, Compatibility and Blends
(Springer Nature Switzerland AG)
• 02 Oct 2020
Marković, Gordana • Marinović-Cincović, Milena • Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Budinski-Simendić, Jaroslava
Crosslinking is a process whereby the polymer segments from different polymer chains are interconnected by covalent (and sometimes ionic) linkages. Crosslinks can be formed either during the polymer synthesis process, or additionally by reaction leading to the connection of already finished macromolecules. The crosslinking agent is necessary for the crosslinking of the finished polymer. Given the great length of the macromolecules, only a small amount of crosslinking agent is necessary to produc ...
Forests
(MDPI)
• 01 Apr 2024
Gulan, Ljiljana • Stajic, Jelena M. • Zeremski, Tijana • Durlević, Uroš • Valjarević, Aleksandar
In urban areas, forest patches and parks are usually the places where people spend most of their time outdoors. Due to the poor environmental protection policy and insufficient investment in industry and energy, Serbia is often ranked among the countries with the highest environmental pollution in Europe. In recent years, ecological protests have been organized all over the country with the aim of raising ecological awareness and resolving environmental issues. The topic has become particularly ...
