Advances in the development of water-soluble nonstoichiometric polyelectrolyte complexes, which are characterized by high stability and can be involved competitive interpolyelectrolyte reactions, summarized analyzed. The complexes remain stable over a wide range external conditions (pH, ionic strength, temperature), but show rapid, reversible highly sensitive response to environmental changes outside this changing phase state. review considers methods preparation properties formed...

Wild-growing berries of Hippophae rhamnoides L. (sea buckthorn) and Crataegus sanguinea (hawthorn) were used as plant raw materials for obtaining the extracts. Elemental analysis samples was conducted to determine content elements such nitrogen, sulfur, total carbon, organic carbon. The various chemical determined using inductively coupled plasma mass spectrometry (ICP-MS) method. Liquid extracts obtained from fruits 70% ethanol at a ratio 1:10. characterized by parameters flavonoid content,...

The processing of metallurgical slags is an urgent task, as they contain residual amounts precious and non-ferrous metals such gold, silver copper. efficiency extraction these directly depends on the granulometric composition processed material, which determines need for its detailed analysis. purpose this study to effect using various enrichment methods. For purpose, studies were carried out, including analysis, chemical flotation tests Na₂S 3418A reagents, well magnetic separation....

Anode-free lithium-ion batteries offer a volumetric energy density approximately 60% higher than that of conventional cells. Despite this advantage, they often experience rapid capacity degradation and limited cycle life. Optimizing electrolyte formulations—particularly through the use specific additives, solvents, lithium salts—is essential to improving these systems. This study explores electrolytes composed fluorinated carbonate-based solvents applied in anode-free cells featuring copper...

The review concerns the results of studies on synthesis polyelectrolyte coatings charged surfaces. These represent nanostructured systems with clearly defined tendency to self-assembly and self-adjustment, which is particular interest for materials science, biomedicine pharmacology. A breakthrough in this area knowledge due development introduction a new technique, so-called layer-by-layer (LbL) deposition nanofilms. technique very simple, viz ., multilayers are formed as result alternating...

Soil degradation is an important problem on a global scale. Suitable materials for its solution are interpolyelectrolyte complexes (IPEC) of biodegradable polymers. IPEC based the oppositely charged pairs polymers—chitosan and sodium alginate (Ch‐SA), chitosan carboxymethylcellulose (Ch‐SC), chitosan‐gellan gum (Ch‐GG) were prepared studied using different physicochemical techniques (FTIR‐spectroscopy, dynamic light scattering, conductometric turbidimetric titration, rheoviscometric...

Polymer cryogels are very promising for producing functional materials. Their porous structure makes them indispensable some areas of medicine, catalysis, and biotechnology. In this review we focused on methods based biopolymers, interpolyelectrolyte complexes composite them. First, the properties brief theoretical information about production biopolymers were considered. The second section summarizes latest advances in cryogels. features synthesis factors affecting final materials part...

A review discusses recent research findings spanning the last two decades concerning ultrasonic technologies applicable to oil, gas, and coal sectors. Various experiments conducted in laboratories have demonstrated efficacy, cost-effectiveness, environmental friendliness of ultrasound recovering processing bitumen, coal, oil shale. Ultrasound enhances formation permeability, gas viscosity, particularly when delivered short, powerful pulses at medium frequencies. Combining with traditional...

The problem of drug-resistant tuberculosis treatment is complex and urgent: the standard includes oral administration six names antibiotics, i.e. up to twenty tablets a day by patient. This causes severe side effects, including those appeared due formation toxic products drug interactions in body. Therefore, it important that some drugs dissolve stomach, others – intestine, which will lead increased bioavailability, reduced dosage toxicity. development targeted delivery systems for with...

Interpolymer complex of biopolymers as a soil structure-forming agentAn interpolymer based on biopolymerschitosan (CS) and sodium alginate (AlNa) was synthesized.The chitosan-sodium prepared by mixing equimolar solutions polymers in given proportion.Chitosan solution citric acid aqueous were used.The composition the is determined methods gravimetry, turbidimetry dynamic laser light scattering [CS]:[AlNa] = 2:3.Interpolymer formed result ion-ion interaction between cationic polyelectrolyte...

The article presents the results of a study physicochemical properties, mineral and elemental composition natural mud Moiyldy, Tuzkala, Arasan, Shoshkaly, eastern coast Lake Alakol salt lakes North-Eastern region Kazakhstan.Research on is one current trends carried out by scientists from different countries to identify compounds that cause their positive therapeutic effects.A review available data physical chemical muds in Kazakhstan showed lack systematic studies structure peloids part...

This review discusses recent research findings spanning the last two decades concerning ultrasonic technologies applicable to oil, gas, and coal sectors. Various experiments conducted in laboratories have demonstrated efficacy, cost-effectiveness, environmental friendliness of ultrasound recovering processing bitumen, coal, oil shale. Ultrasound enhances formation permeability, gas viscosity, particularly when delivered short, powerful pulses at medium frequencies. Combining with traditional...

The article presents the results of a study nominal part Salicornia europaea L. population growing in Republic Abai. An elemental analysis plant raw materials was carried out, content total carbon, organic nitrogen and sulfur determined. alcoholic extract vegetable obtained Soxlet apparatus. filtered used for chemical analysis. Qualitative reactions revealed presence number biologically active substances extract, such as proteins, terpenes steroids, tannins, xanthones, phenolic compounds,...

The silver and copper nanoparticles in water ethanol extracts of some plants were synthesized by the method "green" chemistry. are studied methods a spectophotometery, dynamic light scattering their stability is studied. possibility reduction sizes shown an ultrasonic dispersion. used as carriers new antitubercular drugs.

The purpose of this article is to study the sorption heavy metals by humic acids light and dark chestnut soil. objects research are samples soils, selected from an ecologically clean area East Kazakhstan. Humic (HA) were separated soil at different pH values. At same time yield HA was 0.075% 1.0, it 0.017% pH=7.0. Further, dependence degree on medium acidity established. It found that zinc cadmium better sorbed in a strongly acidic (рН1.0; 84.14%), while lead preferably 6.0, its higher...

Polyelectrolytic multilayers as drug delivery systemThis article is devoted to preparation of polyelectrolytic microcapsules two antitubercular drugs (ATDs) the new system (DDS).Co-encapsulation oral pyrazinamide and moxifloxcin by carried out for first time.At ionotropic gelation method co-encapsulation a polymeric matrix out.As biopolymers gellan sodium alginate were used.The efficiency was determined using UV-spectroscopy it specified in State pharmacopeia Republic Kazakhstan.Then fiber...

About quantitative determination of flavonoids in vegetative raw materialsNumerous researches show that the medicines created on basis are high performance antineoplastic tools, have antioxidatic properties, reduce risk diseases cardiovascular system.Currently physical and chemical methods analysis, such as spectrophotometry, absorption spectroscopy widely used for identification medicines.However, combined involving various variants chromatographic separation investigated components...

The interpolyelectrolyte complex of the composition [chitosan]:[alginate] = [1]:[4] was prepared by mixing a hydrochloric acid solution cationic polyelectrolyte chitosan and an aqueous anionic polyelectro-lyte sodium alginate. alginate biopolymers first used as soil structurizer. Due to low humus light mechanical composition, dark chestnut dry-steppe zone East Kazakhstan region is subjected erosion. Introducing polymer into specified contributed improvement wind resistance, increase in...

Бас редактор: ЖҰРЫНОВ Мұрат Жұрынұлы, химия ғылымдарының докторы, профессор, ҚР ҰҒА академигі, Қазақстан Республикасы Ұлттық ғылым академиясының президенті, АҚ «Д.В.Сокольский атындағы отын, катализ және электрохимия институтының» бас директоры (