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Featured researches published by Jasna V. Džunuzović.


Russian Journal of Physical Chemistry A | 2011

Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester

Marija V. Pergal; Jasna V. Džunuzović; M. Kićanović; Vesna Vodnik; Miodrag M. Pergal; Slobodan Jovanović

Novel polyurethanes (PUs) were synthesized using hydroxy-terminated hyperbranched polyester (BH-20) and 4,4′-methylenediphenyl diisocyanate (MDI) as hard segments and hydroxy-terminated ethylene oxide-poly(dimethylsiloxane)-ethylene oxide triblock copolymer (PDMS-EO) as soft segment, with soft segment content ranging from 30 to 60 wt %. The PUs were synthesized by two-step solution polymerization method. The influence of the soft segment content on the structure, swelling behavior and thermal properties of PUs was investigated. According to the results obtained by swelling measurements, the increase of the hard segment content resulted in the increase of the crosslinking density of synthesized samples. DSC results showed that the glass transition temperatures increase from 36 to 65°C with increasing hard segment content. It was demonstrated using thermogravimetric analysis (TGA) that thermal stability of investigated PUs increases with increase of the soft PDMS-EO content. This was concluded from the temperatures corresponding to the 10 wt % loss, which represents the beginning of thermal degradation of samples.


RSC Advances | 2015

High performance alkyd resins synthesized from postconsumer PET bottles

Pavle Spasojević; Vladimir V. Panić; Jasna V. Džunuzović; Aleksandar D. Marinković; Albert J. J. Woortman; Katja Loos; Ivanka G. Popović

The glycolytic recycling of waste PET presents a challenge for the production of secondary value-added products, such as alkyd resins. A way to overcome the unsatisfactory mechanical, drying and chemical resistance properties of alkyds obtained from difunctional glycolyzates was proposed. Waste PET was glycolyzed using multifunctional alcohols: glycerol (G), trimethylolethane (TME), trimethylolpropane (TMP) and pentaerythritol (PE), giving tetra- and hexa-functional glycolyzates and, for comparison, using diethylene glycol (DEG), propylene glycol (PG) and dipropylene glycol (DPG) giving di-functional glycolyzates. The obtained glycolyzates were examined by 1H and 13C NMR, FTIR spectroscopy and elemental analysis and further used in the synthesis of alkyd resins. The properties of the prepared alkyd resins (acid, hydroxyl and iodine values, color, average molar masses and molar mass distributions, viscosity, drying time, hardness, flexibility, gloss, adhesion and chemical resistance) were investigated with respect to the functionality and the structure of the used glycolyzates. Alkyd resins derived from multifunctional glycolyzates (TME and TMP) showed considerably enhanced properties compared to those produced from difunctional glycolyzates and also to conventional general purpose resins.


Materials & Design | 2014

Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters

Tijana S. Radoman; Jasna V. Džunuzović; Katarina Jeremic; Branimir N. Grgur; Dejan Milicevic; Ivanka G. Popović; Enis S. Džunuzović


Progress in Organic Coatings | 2013

Microstructure and properties of poly(urethane-siloxane)s based on hyperbranched polyester of the fourth pseudo generation

Marija V. Pergal; Jasna V. Džunuzović; Rafał Poręba; Sanja Ostojić; Aleksandra Radulović; Milena Špírková


European Polymer Journal | 2012

Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites

Enis S. Džunuzović; Jasna V. Džunuzović; Aleksandar D. Marinković; Milena T. Marinović-Cincović; Katarina Jeremic; Jovan M. Nedeljković


Progress in Organic Coatings | 2012

Mechanical and thermal properties of UV cured mixtures of linear and hyperbranched urethane acrylates

Enis S. Džunuzović; Srba Tasic; Branislav R. Božić; Jasna V. Džunuzović; Branko Dunjic; Katarina Jeremic


Polymer Composites | 2012

Silver/polystyrene nanocomposites: Optical and thermal properties

Vesna Vodnik; Dušan K. Božanić; Jasna V. Džunuzović; Ivana Vukoje; Jovan M. Nedeljković


Journal of Non-crystalline Solids | 2012

Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester

Jasna V. Džunuzović; Marija V. Pergal; Rafał Poręba; Vesna Vodnik; Branislav R. Simonović; Milena Špírková; Slobodan Jovanović


Industrial & Engineering Chemistry Research | 2012

Studies of the Thermal and Mechanical Properties of Poly(urethane–siloxane)s Cross-Linked by Hyperbranched Polyesters

Jasna V. Džunuzović; Marija V. Pergal; Rafał Poręba; Sanja Ostojić; Nada Lazić; Milena Špírková; Slobodan Jovanović


Materials Research Bulletin | 2014

Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization

Ivana Vukoje; Vesna Vodnik; Jasna V. Džunuzović; Enis S. Džunuzović; Milena T. Marinović-Cincović; Katarina Jeremic; Jovan M. Nedeljković

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