A5005169389- Polymer Nanocomposite Synthesis and Irradiation
- Nanoparticles: synthesis and applications
- Laser-Ablation Synthesis of Nanoparticles
- Gold and Silver Nanoparticles Synthesis and Applications
- Electron and X-Ray Spectroscopy Techniques
- Ion-surface interactions and analysis
- Antimicrobial agents and applications
- Nonlinear Optical Materials Studies
- Advanced Polymer Synthesis and Characterization
- Material Properties and Applications
- Microplastics and Plastic Pollution
- Nanoparticle-Based Drug Delivery
- Polymer Nanocomposites and Properties
- Dendrimers and Hyperbranched Polymers
- TiO2 Photocatalysis and Solar Cells
- Pigment Synthesis and Properties
- Flame retardant materials and properties
- Graphene and Nanomaterials Applications
- Thermal and Kinetic Analysis
- Synthesis of Tetrazole Derivatives
- Chemical Synthesis and Characterization
- Nanomaterials for catalytic reactions
- Analytical chemistry methods development
- Click Chemistry and Applications
- Chemical Synthesis and Analysis
Lomonosov Moscow State University
2013-2024
Moscow State University
2011
Tuning the size and spatial distribution of metal nanoparticles is a key issue for obtaining metal–polymer nanocomposites with desirable properties. It was shown that action white X-ray radiation (bremsstrahlung, Emax ∼ 30 keV) on swollen films interpolyelectrolyte complexes copper silver ions in an aqueous—alcoholic environment resulted formation specific type nanostructures characterized by transmission electron microscopy (TEM). The structure pattern explained autocatalytic enhancement...
Due to the presence of cationic units interpolyelectrolyte complexes (IPECs) can be used as a universal basis for preparation biocidal coatings on different surfaces. Metallopolymer nanocomposites were successfully synthesized in irradiated solutions polyacrylic acid (PAA) and polyethylenimine (PEI), dispersions non-stoichiometric IPECs PAA-PEI containing silver ions. The data from turbidimetric titration dynamic light scattering showed that pH 6 is optimal value obtaining IPECs. Metal...
In order to control pathogenic microorganisms, three polymer compositions were prepared and tested. First, a water-soluble positively charged polycomplex was synthesized via the electrostatic binding of anionic polyacrylic acid an excess polyethylenimine enhance biocidal activity polycation. Second, aqueous solution AgNO3 added polycomplex, thus forming ternary polycation-polyanion-Ag1+ complex with additional antimicrobial effect. Third, resulting subjected UV irradiation, which ensured...
Gold nanoparticles (AuNPs) with average sizes of 1.5 nm and 3 narrow size distribution have been prepared in the irradiated aqueous solutions suspensions Au(III)-complexes units poly(1-vinyl-1,2,4-triazole) (PVT) – poly(acrylic acid) (PAA) respectively. The formation AuNPs has studied using UV-VIS spectroscopy transmission electron microscopy. effective stabilization ultrasmall is achieved due to combination both electrostatic interaction polymer specific adsorption functional groups on...
Abstract Poly‐1‐vinyl‐1,2,4‐triazole (PVT)‐based materials with silver nanoparticles are promising antibacterial products. The metal controllable sizes were obtained by radiation‐induced reduction of the dispersions complexes PVT ions. Formation in aqueous suspensions irradiated at pH 6.0, 2.5, and 2.0 was studied using methods UV–VIS spectroscopy transmission electron microscopy. has detected a change efficiency interaction between protonated or non‐protonated units surface nanoparticles....
Abstract The immobilization of N , ‐diallyl‐ ‐dimethylammonium chloride (DADMAC) on low‐density polyethylene (LDPE) films was carried out by the method postradiation grafting using x‐ray radiation. introduction polycation exchanger links provided appearance hydrophilicity surface modified film. By measuring wetting contact angle, IR and SEM, island‐type character coating from grafted polyDADMAC detected. death Gram‐negative bacteria Pseudomonas aeruginosa, Gram‐positive Staphylococcus aureus...
Tuning the size and structure of bimetallic nanostructures is for design functional compounds with desirable properties. In this paper, mechanisms that control radiation-induced assembly core–shell nanoparticles in polyelectrolyte matrices are discussed. The stages Ag/Cu nanoparticle formation films poly(acrylic acid)–poly(ethylenimine) complexes have been studied first time using X-ray diffraction analysis including synchrotron techniques combined electron microscopy. generation silver...
Metal–polymer nanocomposite polyvinyltriazole–silver nanoparticles were obtained using one-pot synthesis in irradiated aqueous solutions of 1-vinyl-1,2,4-triazole (VT) and silver ions. Gel permeation chromatography data show that upon radiation initiation, the molecular weight poly(1-vinyl-1,2,4-triazole) increases with increasing monomer concentration. To study kinetics polymerization features radiation–chemical formation nanoparticles, UV-Vis spectroscopy was used. TEM images a relatively...
Gold nanoparticles (AuNPs) stabilized with poly(1-vinyl-1,2,4-triazole) (PVT) have been synthesized via a one-pot manner in irradiated solutions of 1-vinyl-1,2,4-triazole (VT) and Au(III) ions. The transmission electron microscopy examinations shown that the sizes formed range from 1 to 11 nm are affected by ratio VT gold To study kinetics peculiarities polymerization assembling AuNPs, UV-Vis spectroscopy was used. analysis data obtained reveals an inhibition period, influenced...