A5084768710- Polymer Nanocomposites and Properties
- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Antimicrobial agents and applications
- Microplastics and Plastic Pollution
- Polymer Nanocomposite Synthesis and Irradiation
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Environmental Chemistry and Analysis
- Natural Fiber Reinforced Composites
- Clay minerals and soil interactions
- Material Properties and Applications
- Polymer Synthesis and Characterization
- Advanced Polymer Synthesis and Characterization
- Marine Biology and Environmental Chemistry
- Polymer Science and Applications
- Silicone and Siloxane Chemistry
- Chemistry and Chemical Engineering
- Crystallization and Solubility Studies
- Structural mechanics and materials
- Polymer Science and PVC
- X-ray Diffraction in Crystallography
- Fiber-reinforced polymer composites
- Electrospun Nanofibers in Biomedical Applications
- Nanotechnology research and applications
- Adsorption, diffusion, and thermodynamic properties of materials
A.V. Topchiev Institute of Petrochemical Synthesis
2014-2023
Russian Academy of Sciences
2014-2023
D. Mendeleyev University of Chemical Technology of Russia
2016-2023
Prokhorov General Physics Institute
2009
Constructor University
2009
Current challenges in the development of various polymer nanocomposites and study their properties are considered. Results studying hybrid structural (polymer–layered silicates, polymer–nanodiamonds) functional (based on conducting or liquid-crystalline polymers) nanomaterials presented. Methods modification nanoparticles dispersion a matrix, role interactions between matrix fillers, as well nanoparticle morphology realized course processing, discussed. The bibliography includes 453 references.
Raman spectroscopy has been applied for the rapid and nondestructive monitoring of interlayer structure sodium montmorillonite (MMT) clay modified by ditetradecyl dimethyl ammonium (DDA+) bromide. This work demonstrates that a detailed analysis spectra in fingerprint region (600−1600 cm−1), combination with model simulation, allows one to distinguish different conformational states DDA+ space clay, namely, liquidlike state but rich trans conformers, disordered states, crystallike...
We present Raman structural study of two grades random propylene/1-octene copolymers with low and high molecular weights the 1-octene content up to 4.5 mole %. The copolymer spectra are compared α, γ, smectic modifications isotactic polypropylene. investigation has showed that degree crystallinity conformational order macromolecules slightly decrease growth content. is higher for samples high-molecular-weight grade low-molecular-weight one. Furthermore, we polyethylene/polypropylene (90/10)...
Exploiting Raman spectroscopy and computational modeling, for the first time, we report explain an interesting phenomenon in clay modified by cetyltrimethylammonium bromide. A splitting of CH(2)-chain's symmetric C-C stretching mode found at ~1128 cm(-1) bromide into two bands 1128 1139 is observed. We demonstrate that this appears if types trans-segments with nonequivalent lengths terminal groups coexist CH(2)-chain alkylammonium ion embedded interlayer space. experimental evidence a...
We report a Raman structural study of melt-mixed blends isotactic polypropylene with two grades polyethylene: linear high-density and branched low-density polyethylenes. methods, which had been suggested for the analysis neat polyethylene polypropylene, were modified in this quantitative polyethylene/polypropylene blends. revealed dependence degree crystallinity conformational composition macromolecules on relative content blend components preparation conditions (quenching or annealing)....
A series of biocide-containing polyethylene composites were obtained using novel guanidine-containing copolymers immobilized on an inert mineral carrier. Multispecies microbial communities isolated from the surface samples either incubated or found in environment, and their taxonomic composition was determined. Biofilms reconstructed microorganisms different ecotopes shown to intensively foul surfaces. The presence polyguanidine biocide suppressed growth survival both binary multispecies...
Raman spectroscopy is used to study variations in the orientational order of macromolecules uniaxially drawn intercalated nanocomposites based on two polymer matrices (polyethylene (PE) and isotactic polypropylene (PP)) a filler (modified clay (MC)). The orientation parameters measured using are compared with X-ray data. It demonstrated that, for PE-MC PP-MC nanocomposites, impedes along draw direction localized noncrystalline phase matrix. ability PE PP crystallites not affected by filler.
A Eu-doped luminescent composite material based on polyethylene has been developed and studied by optical spectroscopy, luminescence intensity mapping, SEM.
The paper presents the results of experimental studies polyethylene-based composites reinforced with silicate needle-shaped filler (palygorskite) different mass fraction (0, 5, 10, and 15%). These are less flammable fire toxic than unfilled polyethylene. structure (size, shape, agglomeration filler) local mechanical properties in nonstretched elongated states were investigated by AFM. In stretched samples palygorskite takes a wavy at extremely high elongation is orthogonal to axis tension....
ABSTRACT Polyolefin composites were prepared from 14 PE matrices and three different mineral fillers (montmorillonite, palygorskite glass microspheres) via melt compounding in an extruder. Mechanical properties of the obtained systems analyzed with emphasis on elongation at break conditions for ductile/brittle failure determined. When filler content is raised beyond a certain “critical” value, tensile are dramatically altered transition occurs ductile behavior to brittle fracture. This...