hydrogels

A NEW OBTAINING METHOD OF TUBULAR PRODUCTS BASED ON POLYMER GELS

The method for obtaining composite hydrogel tubular products with the increased strength on the basis of copolymers of 2-hydroxyethylmethacrylate with polyvinylpyrrolidone has been developed. The method consists in the formation of hydrogel tubes with a subsequent precipitation from the solution into their outer surface of the reinforced layer based on polyamide, modified with polyvinylpyrrolidone.

Investigation of the properties of nickel-filled copolymers of polyvinylpyrrolidone and hydrogel materials based on them

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.

Formation Features of Tubular Products on the Basis of Composite Hydrogels

The method for obtaining composite hydrogel tubular products with the increased strength on the basis of copolymers of 2-hydroxyethylmethacrylate with polyvinylpyrrolidone has been developed. The method consists in the formation of hydrogel tubes with a subsequent precipitation from the solution into their outer surface of the reinforced layer based on polyamide, modified with polyvinylpyrrolidone.

STRUCTURE FORMATION PECULIARITIES OF NICKEL-FILLED POLYVINYLPYRROLIDONE COPOLYMERS DURING POLYMERIZATION WITH SIMULTANEOUS Ni2+ REDUCTION

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.

RECEIPT FEATURES OF POLYACRYLAMIDE HYDROGEL DISPERSIONS FILLED WITH MAGNETITE

Magnetic hydrogels form a class of soft materials with remote controllable properties that have attracted great attention due to their applications in biomedical engineering, including tissue engineering, drug delivery and release, enzyme immobilization and cancer therapy.

The synthesis and investigation of swelling hydrogels composite filling by gelatin

Hydrogels are one of the perspective classes of polymer systems that embrace numerous biomedical and pharmaceutical applications. Hydrogels have become very popular due to its unique properties such as high water content, softness, elasticity and biocompatibility. Natural and synthetic hydrophilic polymers can be physically or chemically crosslinked to obtain hydrogels. Their resemblance to living tissue opens up many possibilities for applications in biomedical fields.

Тонкоплівкові полімерні композити мембранного типу з підвищеними фізико-механічними властивостями

The membrane type thinly-film composites on the basis of cross-linked co-polymers of 2- hydroxyethyl methacrylate with polyvinyl pirrolidone and aliphatic polyamide -6 are synthesized. The influence of formation conditions on physical and mechanical and sorption properties of synthesized films is investigated. Синтезовано тонкоплівкові композити мембранного типу на основі рідкоструктурованих кополімерів 2-гідроксіетилметакрилату з полівінілпіролідоном і аліфатичного поліаміду-6. Досліджено вплив умов формування на фізико-механічні і сорбційні властивості синтезованих плівок

Розрахунок та обґрунтування технологічних параметрів одержання плівкових гідрогелевих матеріалів відцентровим формуванням

The analysis of technological parameters of hydrogel film materials formation process is carried out on the basis of experimental and theoretical investigations by centrifugal forming method. The theoretical dependences that are determining the relationship between geometric characteristics of form and it’s rotation rate with technological parameters of films formation were received through investigation of composition movement mechanics in centrifugal form.

Гідрогелі на основі похідних сукцинатів хітозану як абсорбенти барвників

The three-dimensional polymer structure was formed by the thermal treatment of xerogels, received by drying the watersoluble polyoxyethylene chitosan succinates without any additional activators of functional groups or catalysts. The obtained samples are swelling in water with forming hydrogels, capable to absorption and release of rhodamine G and malachite green dyes.

Композиційні мембрани з гетерошаром на основі сумішей поліамід - полівінілпіролідон

Синтезовано композиційні мембрани з (ультра)тонким гетерошаром на основі
сумішей ПА-6–ПВП. Підтверджено ефективність модифікування структури гідрогелів
на основі рідкоструктурованих кополімерів ГЕМА–ПВП осадженням тонких полімерних
плівок із розчинів, що дає змогу формувати на їхній поверхні зміцнені структуровані
шари. Визначено фізико-механічні властивості і солепроникність одержаних компо-
зиційних мембран. Встановлено, що варіюванням композиційних складів гідрогелевого і