2-hydroxyethylmethacrylate

The initiating ability of finely dispersed bimetallic particles in the polymerization reaction of 2-hydroxyethyl methacrylate in polyvinylpyrrolidone presence is proven. The bimetal formation on the surface of ferrum particles was confirmed by the X-ray spectroscopic microanalysis results. The regularities of block polymerization of such compositions have been studied. The effect of metals nature, monomer and polyvinylpyrrolidone ratio, as well as the temperature on polymerization kinetics and "limit" monomer conversion was determined.

Processing of polymers and composites based on them by centrifugal molding is important for production the bodies of revolution, which are used in various industries. This article analyzes the centrifugal molding and presents the results of research about new areas of such materials applications. For instance as method for the hydrogel films production of materials based on copolymers of 2-hydroxyethyl methacrylate (HEMA) with polyvinylpyrrolidone (PVP), including filled hydrogels, which can be applicable in medicine, electrical and tool engineering.

The effect of the presence of finely dispersed metal fillers of various natures (Zn, Co, Ni) on the thermophysical characteristics (Vick heat resistance, glass transition temperature) of polyvinylpyrrolidone block copolymers with 2-hydroxyethylmethacrylate was studied. It was found that the heat resistance of the obtained composites significantly exceeds the heat resistance of unfilled copolymers and is in the range of 360-395K, depending on the nature and content of the metal filler.

Composite materials based on copolymers of polyvinylpyrrolidone and 2-hydroxyethylmethacrylate with combined fillers consisting of metal powders and graphite were obtained by the method of polymerization filling. The developed materials are characterized by sufficiently high physical and mechanical properties, increased electrical conductivity and water content. It was established that the addition of graphite to metal-filled copolymers increases the sensitivity of the electrical resistance of composites to moisture changes.

The possibility of using hydrogels based on copolymers of polyvinylpyrrolidone with 2 hydroxyethylmethacrylate to saturate them with plant extracts was established. Hydrogel materials were obtained with extracts of Calendula officinalis and Arnica montana. The sorption capacity of the hydrogels regarding the extract data was determined.

The paper presents the results of the study of copolymerization of 2-hydroxyethylmethacrylate (HEMA) with polyvinylpyrrolidone (PVP) under the action of two-component initiation systems of iron (II) sulfate/radical type initiator. The influence of the nature of the radical initiator (In) in the FeSO4/In system on the behavior of the polymerization of HEMA/PVP compositions, structural parameters of the polymer matrix network and properties of hydrogels based on pHEMA-gr-PVP copolymers were established.

The properties of nickel-filled copolymers of polyvinylpyrrolidone with 2-hydroxyethylmethacrylate and hydrogel materials based on them, obtained by the method of polymerization with simultaneous reduction of metal ions have been investigated. The influence of polymer-monomer composition formulation, content of metal-filler and conditions of Ni2+ reduction reaction on physico-mechanical, sorption, electrical and magnetic characteristics of obtained materials has been established.

The course of the grafted polymerization of 2-hydroxyethylmethacrylate on polyvinylpyrrolidone with the formation of a reticulated copolymer with simultaneously chemical reduction of nickel ions is confirmed. The influence of the reduction process on the structural parameters of the polymeric matrix – the grafting efficiency and the content of polyvinylpyrrolidone in the copolymer, the molecular weight between crosslinks is established. The influence of the presence of polymer-monomer composition components on the particles formation of nickel filler is investigated.

Composite hydrogel metal-filled materials in many cases during the operation are used in the form of films, in medicine these are membrane different kind, of transdermal drugs, implants, elements of medical equipment intended for installation of a reliable contact with the human body, the instrument making-elements of different sensors (humidity, temperature, pressure, concentration of gaseous and liquid products), etc.

The hydrogel film composites of biomedical purpose based on copolymers of polyvinylpyrrolidone with 2-hydroxyethylmethacrylate have been synthesized. The influence of filler nature, quantity and composition on the regularities of obtaining, structure and properties of hydrogels have been determined. Synthesized hydrogel composites are recommended to be used for the controlled drug release systems.