Alexander Alexandrovich Berlin

Alexander Alexandrovich Berlin
Russian Academy of Sciences | RAS · Institute of Chemical Physics in Chernogolovka

About

729
Publications
40,689
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2,983
Citations
Citations since 2017
148 Research Items
1444 Citations
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300
2017201820192020202120222023050100150200250300

Publications

Publications (729)
Article
Filled compositions of polylactide (PLA) with a reduced graphene oxide (RGO) at various components ratios were obtained by two independent methods: the solid-phase mixing of components under the action of shear strains and the liquid-phase synthesis in a chloroform solution with ultrasonic stirring. The influence of the structure of formed composit...
Article
Двумя независимыми способами — твердофазным смешением компонентов под действием сдвиговых деформаций и жидкофазным синтезом в растворе хлороформа при перемешивании ультразвуком получены наполненные композиции полилактида (ПЛА) с восстановленным оксидом графена (ВОГ) различного состава. Изучено влияние структуры образующихся композитов на комплекс и...
Article
Hydrolysis of fibrous and film materials based on polylactide and poly(3-hydroxybutyrate) polyesters obtained by electrospinning and casting from solutions in chloroform, as well as their ternary composition with chitosan, has been studied. The effect of hydrolysis conditions on the course of the process is shown.
Article
Full-text available
Composites of polylactide containing graphite nanoplates as a filler in the concentration range 1–20 wt% were prepared in methylene chloride using the sonication technique. The thermal characteristics and phase transitions were studied by DSC and TGA methods. The temperatures and heats of glass transition, crystallization, and melting were determin...
Article
This study was aimed to investigate the effect of reduced graphene oxide (rGO) on the pyrolysis of polylactide composites (PLA4042D/rGO) prepared in solution. GC-MS analysis of PLA4042D /rGO pyrolysis products showed that introduction of rGO into the composition with PLA leads to a significant change in the ratio of main degradation products. A sha...
Article
Using magnetron sputtering technology, two types of metal coatings, stainless steel and titanium, are applied to the surface of unidirectional carbon tape. Prior to the deposition of metal coatings, the surface of the carbon tape was pretreated in a low-temperature plasma in air. The results of the adhesion strength of the metal coatings to the car...
Conference Paper
Full-text available
К физико-химическим процессам, протекающим в нижней ионосфере Земли с участием электронно-возбужденных состояний, в настоящее время проявляется значительный интерес, что связано, в первую очередь, с проблемами дистанционной пассивной локации поверхности Земли. Спонтанный рост солнечной активности сопровождается значительным увеличением электромагни...
Article
Film biodegradable ternary compositions of polylactide and poly(3-hydroxybutyrate) with chitosan of various compositions are prepared. The thermal properties and absorption capacity of the compositions for iron and chromium ions are studied. It is shown that the sorption activity depends both on the ratio of the components in the compositions and o...
Article
Full-text available
The measurements of Montenbrook et al. to determine the water surface level of the Walchensee Alpine lake in Bavaria (Germany) are a vivid example of the manifestation of the peculiarities of the relationship between the GPS satellite system and remote sensing of the Earth’s surface. The experiments were conducted in 2007 in the framework of the GO...
Article
Full-text available
The measurements of Montenbrook et al. to determine the water surface level of the Walchensee Alpine lake in Bavaria (Germany) are a vivid example of the manifestation of the peculiarities of the relationship between the GPS satellite system as a source and remote sensing of the Earth’s surface. The experiments were conducted in 2007 in the framewo...
Article
Full-text available
Ultrathin electrospun fibers of pristine biopolyesters, poly(3-hydroxybutyrate) (PHB) and polylactic acid (PLA), as well as their blends, have been obtained and then explored after exposure to hydrolytic (phosphate buffer) and oxidative (ozone) media. All the fibers were obtained from a co-solvent, chloroform, by solution-mode electrospinning. The...
Article
Full-text available
Наглядным примером проявления особенностей взаимосвязи спутниковой системы GPS как ис-точника и дистанционного зондирования поверхности Земли служат измерения группы Монтенбрука по определению уровня поверхности воды горного озера Вальхензе в Баварии (Германия). Эксперимен-ты были проведены в 2007 году по программе GORS (GPS Occultation, Reflectome...
Article
Full-text available
The main problems of remote sensing of the Earth’s surface within the frequency range of 1.2–1.6 GHz are discussed. They are related to the resonant quantum properties of the radio wave propagation medium in the lower ionosphere. For passive remote sensing, the main source is incoherent microwave radiation of the D and E ionospheric layers in the d...
Article
Full-text available
Compositions of polylactide (PLA) and poly(3-hydroxybutyrate) (PHB) thermoplastic polyesters originated from the nature raw have been obtained by blending under shear deformations and electrospinning methods in the form of films and nanofibers as well as unwoven nanofibrous materials, respectively. The degrees of crystallinity calculated on the bas...
Article
Full-text available
The possibility of synthesizing and processing incombustible materials based on oligomer and polymer oxides and their hybrids with organic and organoelement compounds at temperatures of 20–200°C is explored. Inorganic thermosetting plastics with a wide range of pour points (100–700°C) are synthesized. A more intense heat treatment can provide the f...
Article
Full-text available
The hydrolytic and enzymatic degradation of polymer films of poly(3-hydroxybutyrate) (PHB) of different molecular mass and its copolymers with 3-hydroxyvalerate (PHBV) of different 3-hydroxyvalerate (3-HV) content and molecular mass, 3-hydroxy-4-methylvalerate (PHB4MV), and polyethylene glycol (PHBV-PEG) produced by the Azotobacter chroococcum 7B b...
Article
Fundamental problems associated with new directions in the development of composite materials are considered.
Article
Full-text available
The possibility of synthesizing and processing incombustible materials based on oligomer and polymer oxides and their hybrids with organic and organoelement compounds at temperatures of 20–200°C is explored. Inorganic thermosetting plastics with a wide range of pour points (100–700°C) are synthesized. A more intense heat treatment can provide the f...
Article
Full-text available
К. Ю. Прочухан, Ал. Ал. Берлин, Ю. А. Прочухан ДИСПЕРГИРОВАНИЕ ГЕТЕРОГЕННЫХ СИСТЕМ КАК СПОСОБ ИНТЕНСИФИКАЦИИ ХИМИЧЕСКИХ РЕАКЦИЙ И ПОЛУЧЕНИЯ НОВЫХ ПРОДУКТОВ Ключевые слова: диспергирование, диффузионный режим, турбулентный реактор, поверхность раздела фаз, гидродинамика, растительные жиры, полиглицерид, поверхностно-активные вещества. В работе рассм...
Article
Full-text available
Transparent in visible light, water-stable low-melting nonorganic polymers with softening temperature 70-208 °С have been prepared on the basis of a water-soluble oligomer compound of alumina-borophosphate, aluminum oxychloride and polyethylenepolyamine at 120 °С. Their thermomechanical and heat properties were studied. The compound was used as a b...
Article
The novel biodegradable biocomposites on the base of poly(3-hydroxybutyrare) nanofibers with embedded iron oxide nanoparticles have been studied by transmission electron microscopy (TEM), Mssbayer spectroscopy, small angle X‑ray scattering (SAXS), and macroscopic magnetization techniques.
Book
This book contains abstracts of presentations of the 9th conference in the series "Space challenges of the XXI century" dedicated to the 100th anniversary of the outstanding scientific event: publication of K. E. Tsiolkovsky's book "Research of the world spaces by jet devices". Purpose of the conference SPACE’2019 was to promote international coop...
Article
The solution of various applied problems usually leads to the need to find answers to purely scientific fundamental questions and discover new phenomena. The article gives examples of such discoveries. It was discovered that flammability of polymeric materials can be decreased by dispersion of a material containing microencapsulated low-boiling fla...
Article
The flow bifurcation transitions of shear-thinning fluids in a channel with sudden contraction and expansion are studied by means of numerical modeling. The rheological properties of the non-Newtonian fluids under consideration are described with the Carreau-Yasuda model. Flow-bifurcation diagrams for media with different viscosity curves are calcu...
Article
Novel biodegradable biocomposites based on poly(3-hydroxybutyrate) nanofibers with embedded iron oxide nanoparticles enriched with ⁵⁷Fe isotope have been studied by transmission electron microscopy (TEM), Mössbauer spectroscopy, small angle X-ray scattering (SAXS), and macroscopic magnetization techniques.
Article
Main trends in the development of thermotropic liquid crystalline (LC) polymers based on p‑hydroxybenzoic acid are described in this review. The relationship between the structure of the main chain of copolymers and their thermal and mechanical properties is shown. The possibility of creating biodegradable LC polymers is demonstrated.
Article
Full-text available
A new materialconsisted of titanium dioxide microparticles photosensitized by organic dyes to generate photodynamic effect is suggested and tested. The effectivity of using such material for water photopurification from organic pollution using daylight is proven.
Article
Full-text available
Ultrafine polyester fibers - poly-(3-hydroxybutyrate), polylactide, and their compositions of various compositions - were obtained by electrospinning. The high absorption capacity of these fibers in relation to oil is comparable to the absorbents used, however, the advantage of the proposed systems is their biodegradability, which implies their sub...
Article
A new material consisted of titanium dioxide microparticles photosensitized by organic dyes for generating the photodynamic effect is proposed and tested. The efficiency of using such a material for photopurifying water of organic pollution by daylight illumination is proven.
Article
Full-text available
The results of evaluating the adhesion strength and mechanical characteristics of elementary filaments used to make LUP carbon tape after metal plating the tape with titanium and stainless steel are presented. The thickness of these coatings is determined by atomic force microscopy and also by measuring the diameter of filaments before and after me...
Article
Ultrafine polyester fibers composed of poly(3-hydroxybutyrate), polylactide, and their various blends were obtained by electrospinning. The fibers were shown to have high absorption capacity towards oil, which is comparable with that of currently used absorbents. An advantage of the proposed systems is their biodegradability, which allows their sub...
Article
The method of synthesis of nanoscaled sodium dodecahydro-closo-dodecaborate Na2[B12H12] is presented. The desired product has been prepared by heating to 200°C the composite formed by the introduction of the triethylammonium salt [Et3NH]2[B12H12] into the silicate matrix of sodium liquid glass. The morphology and phase composition of the synthesize...
Article
Problems related to the production of composite materials based on synthetic polymer matrices reinforced with natural fibers of different classes are considered. The main natural fibers of plant and animal origin used to create polymer composites are characterized, and the properties of the composites are described. The advantages and disadvantages...
Article
Under the conditions of shear deformations, blends of polylactide with natural polysaccharides and their derivatives (starch, chitosan, and ethyl cellulose) were obtained in a Brabender mixer at different ratios of components; their properties were studied. It has been shown that the mechanical parameters of compositions depend on their composition...
Article
Full-text available
A detailed analysis of the influence of Rydberg states on the behavior of GPS signals in the D and E layers of the ionosphere is presented. The main chemical reactions that lead to the formation of the nonequilibrium two-temperature plasma and highly excited Rydberg complexes are considered. Special attention is given to the l-mixing reaction respo...
Article
Full-text available
With the example of Aramid fibers, it is shown that the model of acumulation of fiber breaks in composites cannot explain their observed tensile strength exceeding that of unimpregnated Aramid fibers. The model of longitudinal splitting of fibers proposed by Wagner, with account of fiber-matrix interaction, is based on the idea that the break of fi...
Article
Full-text available
The method of nanoscaled sodium dodecahydro-closo-dodecaborate Na2[B12H12] synthesis is presented. The composite is heated to 200°C to yield the desired product, forming with the introduction of triethyl- ammonium salt [Et3NH]2[B12H12] into the silicate matrix of a sodium liquid glass. The morphology and phase composition of the synthesized sample...
Article
For ultrahigh-molecular-weight polyethylene and composites on its basis which contain graphite nanosheets, molybdenum disulfide, shungite, and montmorillonite as fillers, the surface energy is determined and the work of adhesion of water to their surface is calculated. It is shown that the surface energy of the composites prepared from ultrahigh-mo...
Article
The blends of polylactide with starch at different component ratio are obtained under shear deformation in a Brabender mixer. The thermal behavior of polylactide composites with starch is studied by DSC, and their crystallinity is determined using X-ray diffraction; according to GPC data, the biodegradation of these composites upon exposure in the...
Article
The effect of boric acid (BA) on the thermal destruction of polyvinyl alcohol (PVA) was studied. The pyrolysis temperatures were chosen based on the thermogravimetric analysis data. The composition of the main products of pyrolysis was determined. The mechanisms of thermal destruction were proposed for PVA and its composite with BA. The observed ph...
Article
Full-text available
Ternary rubber crumb–starch–sevilen and double sevilen–starch composites are obtained. It is shown that, when the starch content in the mixture is increased, the elastic modulus grows and the strength and elongation at break reduce. It is found that exposure in soil results in growth of the mechanical parameter. Analysis of the composites by IR spe...
Article
Full-text available
Many drivers use the Navigator based on a satellite system GPS (or GLONASS). This factor is highly convenient because it allows going in the right direction without thinking. However, sometimes there is a situation that upsets the driver. The Navigator behaves unpredictably and does not correspond to its intended purpose. Moreover, it happens only...
Article
It is believed that the organization of industrial processes should strive to enable chemical reactions in the kinetic regime. In this study, examples showing how the diffusion regime can be more profitable in terms of improving product quality and process parameters have been given. When formaldehyde is polymerized, the diffusion regime allows inc...
Article
The effect of boron polyoxide on the thermal degradation of polyvinyl alcohol is studied. Based on the results of thermogravimetric analysis, a kinetic model of thermal degradation of boric acid and polyvinyl alcohol is proposed taking into account the catalytic nature of the dehydration process and accelerated carbonization. The characteristic fea...
Article
Full-text available
It is commonly believed that sodium azide is insensitive to mechanical impact [1]. However, the results of recent studies of the nonisothermal kinetics of the decomposition of sodium azide and its mixtures with small amounts of water [3] are indicative of the necessity of investigating this subject in more detail. The point is that the sensitivity...
Article
Under conditions of shear deformations, low‐density polyethylene (LDPE) and polylactide (PLA) composites are obtained in rotor disperser. The production of these composites allows one to use polymers derived from natural raw and to reduce the cost of the materials on their base. The addition of rigid PLA leads to increase in elastic modulus from 20...
Chapter
Molecular dynamic simulation of low-temperature uniaxial compression and tension of a glass from 1000 molecules of C13H28 oligomer is carried out. Stress-strain diagrams, an influence of deformation on density of the glass, and connection between local density and atom rearrangements are discussed. The influence of original level of stress on initi...