Jasna V. Džunuzović
University of Belgrade
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Publication
Featured researches published by Jasna V. Džunuzović.
Russian Journal of Physical Chemistry A | 2011
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
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
Tijana S. Radoman; Jasna V. Džunuzović; Katarina Jeremic; Branimir N. Grgur; Dejan Milicevic; Ivanka G. Popović; Enis S. Džunuzović
Progress in Organic Coatings | 2013
Marija V. Pergal; Jasna V. Džunuzović; Rafał Poręba; Sanja Ostojić; Aleksandra Radulović; Milena Špírková
European Polymer Journal | 2012
Enis S. Džunuzović; Jasna V. Džunuzović; Aleksandar D. Marinković; Milena T. Marinović-Cincović; Katarina Jeremic; Jovan M. Nedeljković
Progress in Organic Coatings | 2012
Enis S. Džunuzović; Srba Tasic; Branislav R. Božić; Jasna V. Džunuzović; Branko Dunjic; Katarina Jeremic
Polymer Composites | 2012
Vesna Vodnik; Dušan K. Božanić; Jasna V. Džunuzović; Ivana Vukoje; Jovan M. Nedeljković
Journal of Non-crystalline Solids | 2012
Jasna V. Džunuzović; Marija V. Pergal; Rafał Poręba; Vesna Vodnik; Branislav R. Simonović; Milena Špírková; Slobodan Jovanović
Industrial & Engineering Chemistry Research | 2012
Jasna V. Džunuzović; Marija V. Pergal; Rafał Poręba; Sanja Ostojić; Nada Lazić; Milena Špírková; Slobodan Jovanović
Materials Research Bulletin | 2014
Ivana Vukoje; Vesna Vodnik; Jasna V. Džunuzović; Enis S. Džunuzović; Milena T. Marinović-Cincović; Katarina Jeremic; Jovan M. Nedeljković