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25 results on '"Bartnicki, Andrzej"'

4. Synthesis and characterization of vinyl derivatives of naphthalene-2,7-diol as a photoluminescent dopant useful in optical materials

Author

Demirci Gokhan, Gawdzik Barbara, Gil Malgorzata, Podkoscielna Beata, Podkoscielny Wieslaw, and Bartnicki Andrzej

Subjects
Photoluminescence, Dopant, General Chemical Engineering, Diol, 02 engineering and technology, General Chemistry, 021001 nanoscience & nanotechnology, Photochemistry, 01 natural sciences, Characterization (materials science), 010309 optics, chemistry.chemical_compound, chemistry, Optical materials, 0103 physical sciences, 0210 nano-technology, Naphthalene
Abstract

In this study synthesis and characterization of the new methacrylic derivatives of naphthalene-2,7-diol are presented. This reaction was performed in the three stages. In first stage 2,7-NAF was reacted with dimethyl sulfate in the NaOH solutions at 0°C. Next, the obtained 2,7-NAF.Me was modified by epichlorohydrine leading to epoxide compound (2,7-NAF.Me.EP). Finally, the reaction of opening oxirane rings by methacrylic acid was carried out. The chemical structures of all derivatives were confirmed by 1H and 13C NMR. Next, copolymerization reaction with methyl methacrylate (MMA), styrene (St) or divinylbenzene (DVB) was carried out. New monomer (2,7-NAF.MePM) possesses only one double bond and it can be used as a dopant in optical materials technology. The studies of their thermal properties were investigated by means TG/DTG/QMS coupled method. The influence of photoluminescence dopant on thermal stability of the obtained copolymers was also discussed.

Published
2016

24. Studies on synthesis and physicochemical properties of new bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]sulfide terpolymers.

Author

Podkościelna, Beata, Maciejewska, Małgorzata, and Bartnicki, Andrzej

Subjects
GLYCIDYL methacrylate, STYRENE, POLYMER research, SULFIDES, SWELLING of materials, CROSSLINKING (Polymerization)
Abstract

Synthesis and physicochemical properties of the new glycidyl methacrylate, styrene, and bis[4(2-hydroxy-3-methacryloyloxypropoxy)phenyl]sulfide terpolymers of different crosslinking degrees are presented. The terpolymers were obtained in the form of regular microspheres by suspension polymerization. The epoxy group content, thermal properties (DSC, thermogravimetric analysis), and swelling characteristic of the functional microspheres were examined. In addition, a selected terpolymer was modified in the epoxide ring opening reaction with diethylenetriamine. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 [ABSTRACT FROM AUTHOR]

Published
2012
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25. Synthesis of a new tetrafunctional monomer, 1,4-di(2-hydroxy-3-methacryloyloxypropoxy)phenol, and its copolymerization.

Author

Grochowicz, Marta, Bartnicki, Andrzej, and Gawdzik, Barbara

Subjects
METHYL methacrylate, MICROSPHERES, POLYMERIZATION, COPOLYMERS, POLYMERS
Abstract

The article discusses results of a study that examines the application of the aromatic tetrafunctional methacrylate monomer, 1,4-di(2-hydroxy-3-methacryloyloxypropoxy)phenol for the synthesis of porous microspheres. A discussion on the copolymerization with trimethylolpropane trimethacrylate in mixture of pore-forming diluents is given. The study showed that diluent mixture composition influences the copolymers' porous structure.

Published
2008
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