Synthesis and characterization of dextran methacrylates
Dextran methacrylates were received by acylation of dextran with methacryloilchloride in the presence of tertiary amines in the DMF/LiCl solution. Dextran methacrylates, obtained in the presence of triethylamine, with DS over 0.5 were insoluble in water.
Подобные документы
This paper describes the synthesis of sodium alginate/hydroxyapatite composites and the influence of the presence of Alg on HA crystallization. It was shown that the presence of Alg and the increase of its concentration leads to the decrease of the HA.
статья, добавлен 30.07.2016- 2. A synthetic approach of d-glucose derivatives: spectral characterization and antimicrobial studies
Synthesis of new series of derivatives of methyl 4, 6-o-(4-methoxybenzylidene)-b-D-glucopyranoside direct acylation with a wide range of acylating agents. Spectral and elemental analysis data of antibacterial action of the synthesized compounds.
статья, добавлен 23.02.2016 Study of the process of intramolecular cyclization products of epichlorohydrin aminolysis of secondary amines. Analysis of the energy characteristics obtained in vacuum and in acetonitrile solution with water as an "active" solvation partner of reaction.
статья, добавлен 30.10.2016Study of the synthesis of complexes of diacetylhydrazine with hydrazine hydrate. Carrying out the reaction of the ligand with cobalt in the presence of salts of metal chloride and furfural. Condensation of diacetylhydrazine with hydrazine monohydrate.
статья, добавлен 15.01.2021Описание взаимосвязей температур плавления минимумов в системах LiCl-MCl и содержания MCl в эвтектиках в зависимости от термических, термодинамических, кристаллографических параметров. Определение координат низкоплавкой эвтектики в системе LiCl–FrC.
статья, добавлен 02.04.2019Study vapor dynamics and growth of crystals in the solution of the two components chemically neutral - water and sucrose. The conditions under which crystals can be transformed into a solution. Conservation equations for interfacial interactions.
статья, добавлен 24.02.2016New facile method for the controllable synthesis of high quality single-phase nanowires with from nanowires templates. Detailed characterization of the superconducting and transport properties of nanowires. Synthesis of porous nanowires and nanotubes.
статья, добавлен 30.07.2016- 8. Algorithm of optimal solution search for the control with model system of methanol synthesis column
The mechanism of development and implementation of the optimal synthesis search algorithm and analysis of gas costs. Features of control using the maintenance schedule. Technological process of methanol synthesis under conditions close to optimal.
статья, добавлен 14.01.2017 The technology for the synthesis of two coumarin-chalcone hybrids by means of Kleisen-Schmidt condensation between 3-acetylcoumarin with benzaldehyde and 4-chlorobenzaldehyde, respectively. Method of identification and control of a chemical process.
статья, добавлен 15.01.2021Influence of synthesis conditions on ceria particles size. Anticorrosion properties of modified carbon nanotubes. Realization the synthesis in aqueous solution at room temperature that reduces the cost of the preparation procedure of nanosized ceria.
статья, добавлен 04.04.2014Study of influence of amino acids on the hydroxyapatite formation. Study of mineral obtained by transmission electron microscopy and powder X-ray diffraction. Analysis of the phase composition, crystal size and lattice microstrains of calcium phosphate.
статья, добавлен 23.12.2016The absorption spectra of substances by vitamins solutions. The calculation of molar absorption coefficients. The spectrum of the triple multivitamin solution. Mass determination of B vitamins in polyvitamin. Spectrophotometric analysis of the components.
статья, добавлен 05.12.2018- 13. Ir spectroscopy and tg analysis investigations of functionalized go and go-containing divinyl rubber
Analysis of the results of a study of graphene oxide and divinely rubber containing graphene oxide, functioning-RO (Oh)2 slot groups as a result of a kill-chlorophosphorylation reaction under the action of PCl3 in the presence of oxygen. Synthesis of GO.
статья, добавлен 10.05.2018 An ion-pair model has been proposed explaining the origin of acidic sites at the silica surface–aqueous solution interface. Importance of role of the dissociated water is shown in the hydrolysis of the saccharose adsorbed on the surface of silica.
автореферат, добавлен 02.04.2014The chemical structure of the polymer latexes. The influence of surfactants on the drip solution. The mechanism of anionic with a negative charge in the screed, acting as air entrainment. Hydrogen bonding, water absorption and compressive strength.
статья, добавлен 22.02.2015Obtaining via hydrolysis of tetraethylorthosilicate in presence of template agent Pluronic P123 Ag/Au bimetallic nanoparticles in porous sol-gel silica films on glass. Definite amounts of AgNO3 and HAuCl4 by dip-coating procedure by a thermal treatment.
статья, добавлен 01.04.2014The kinetic of origin and transformation of the Fe(II)–Fe(III) LDH structures on the steel electrodes surface contacting with FeSO4 and Fe2(SO4)3 dispersion medium of the air oxygen into the system was studied. X-ray diffraction method of investigation.
автореферат, добавлен 02.04.2014The formation of the potassium salt of 3-substituted 6-thio-6,7-dihydro-2H-[1,2,4]triazino[2,3-C]quinazoline-2-ones in the presence of potassium hydroxide in alcohols via reaction of 6-R-3-(2-aminophenyl)-1,2,4-triazin-5-ones (2) with carbon disulfide.
статья, добавлен 22.02.2014Obtaining a biodegradable polymer material with satisfactory thermal properties. Synthesis of copolyester, poly (ethylene phthalate-propylene succinate) by direct polycondensation from ethylene glycol, polypropylene glycol, phthalic and succinic acid.
статья, добавлен 15.01.2021Synthesis semizwitterionic viologens for the crystal engineering of functional materials. Application of the control positions of molecules in crystals using hydrogen bonds. The triple helices had obtained by tunig the spacer between donor and acceptor.
статья, добавлен 17.02.2014Investigation of the reaction of e-caprolactone with methacrylic acid. Synthesis of the compound chloride with polyethylene glycol ether. Peculiarities of surface active methacrylate monomer. Surface tension in aqueous solution in contact with air.
статья, добавлен 23.02.2016The importance of water quality. Applications of machine learning in water quality prediction. Challenges and limitations. Given these multifaceted impacts, the necessity for accurate and timely prediction of water quality cannot be overstated.
статья, добавлен 19.03.2024Alkylation of potassium 9-R1-10-R2-3-R-2-oxo-2Н-[1,2,4]triazino[2,3-с]quinazolin-6-thiolates by N-cycloalkyl-(cycloalkylaryl-)-2-chloracetamides. Analizes of indicators of the antiviral activity of compounds 3.2 and 3.14 against influenza type A H3N2.
статья, добавлен 29.01.2016The using nickel powders as electrode materials in multilayered ceramic capacitors. Development of technology of Ni/NiO nanopowders obtaining with particle size of 20 nm and minimal impurities content. The analyses of powder microstructure the products.
статья, добавлен 30.07.2016Experimental study of interaction of water with the substrate and the role of cesium as a promoter for the adsorption of water on the strontium titanate surface. Enhancement of the catalytic properties of metal oxides by the addition of alkali species.
статья, добавлен 30.07.2016