hydroxyapatite

THE USE OF ULTRASOUND IN REACTIONS OF OBTAINING OF POLYVINYLPYRROLIDONE COPOLYMERS AND (NANO)COMPOSITES ON ITS BASE

Usually, in chemical industry the energy of ultrasound is being used to intensify technological processes. However, the complexity of the mechanism of ultrasound action makes it difficult to create a single common theory that could explain its influence on the chemical reactions. Therefore, in each particular case wide-ranging studies of the influence of ultrasound on the chemical reaction, as well as on the structure and properties of the synthesized substances and materials are required.

Срібловмісні композити полівінілпіролідону з антибактеріальними властивостями

The polymerization of hydroxylapatite compositions of 2-hydroxyethylmethacrylate with polyvinylpyrrolidone in the presence of silver salts was researched, and it was found that silver salts retard the polymerization velocity. The composites as porous blocks, that containing in their structure silver nanoparticles, were synthesized and their antibacterial and antifunginal properties were confirmed.

Вплив мінеральних наповнювачів на адгезійні властивості гідроксиетилметакрилатних композицій з полівінілпіролідоном

Досліджено адгезійні властивості композицій 2-гідроксиетилметакрилату та
полівінідпіролідоном за різних ініціювальних систем. Проаналізовано вплив різної
природи ініціатора полімеризації на адгезійну міцність клейового шару, утвореного з
композицій з мінеральних наповнювачів. Використано наповнювачі з різними фізико-
хімічними, структурними та іншими властивостями, а саме: гідроксиапатит, монтмо-
рилоніт та комплекс монтморилоніт – полівінілпіролідон (1:5). Встановлено вплив

Effect of Hydroxyapatite on the Glue Line Strength of the Compositions Containing Polyvinylpirrolidone

The influence of nature and mineral filler amount on adhesive ability of composite materials based on 2-hydroxyethylmethacrylate and polyvinylpyrrolidone modified by the low-molecular additives has been determined. The hydroxyapatite effect on the value of adhesive strength of the glued seam composites has been researched.

Mineral Filled Porous Composites Based on Polyvinylpyrrolidone Copolymers with Bactericidal Properties

The polymerization of 2-hydroxyethylmethacrylate compositions with polyvinylpyrrolidone has been investigated in the presence of mineral fillers (hydroxyapatite, montmorillonite and wollastonite). The influence of the nature and amount of mineral filler on polymerization kinetics and composition of copolymers has been determined. In the composite structure silver particles were obtained via silver nitrate reduction by polyvinylpyrrolidone tertiary nitrogen. The synthesized silver-containing composites possess bactericidal properties against E. colі and S. aureus bacteria, in particular.