A5011825362- Nanocomposite Films for Food Packaging
- Electrospun Nanofibers in Biomedical Applications
- Advanced Sensor and Energy Harvesting Materials
- Silk-based biomaterials and applications
- Polymer Surface Interaction Studies
- biodegradable polymer synthesis and properties
- Neuroscience and Neural Engineering
- Hemostasis and retained surgical items
- Conducting polymers and applications
- Material Properties and Applications
- 3D Printing in Biomedical Research
- Nerve injury and regeneration
- Textile materials and evaluations
- Dyeing and Modifying Textile Fibers
- Polymer Nanocomposites and Properties
- Surfactants and Colloidal Systems
- Hydrogels: synthesis, properties, applications
- Graphene and Nanomaterials Applications
- Lignin and Wood Chemistry
- Biopolymer Synthesis and Applications
- Advanced Polymer Synthesis and Characterization
- Adsorption, diffusion, and thermodynamic properties of materials
- Liquid Crystal Research Advancements
- Polymer Nanocomposite Synthesis and Irradiation
- Mechanical Behavior of Composites
Peter the Great St. Petersburg Polytechnic University
2018-2023
Saint-Petersburg State University of Technology and Design
2008-2023
Institute of Macromolecular Compounds
2014-2020
Institute of Physiologically Active Compounds
2013
Russian Academy of Sciences
2011
In this study, bioactive composite systems based on natural polymers (chitosan and lignin) were prepared in study. The structural, mechanical, morphological properties of chitosan-based materials containing various amounts lignin filler investigated. infra-red IR spectroscopy data confirmed the formation chemical bonds between components obtained composites. mechanical film samples studied air physiological solution. It was demonstrated that breaking elongation values wet state higher...
Biocompatible electrically conducting chitosan-based films filled with single-wall carbon nanotubes were obtained. Atomic force microscopic studies of the free surface topography revealed a change in morphology chitosan nanotubes. Introducing 0.5 wt.% into results an increase tensile strength (up to ~180 MPa); strain values also rise up ~60%. It was demonstrated that containing 0.1–3.0 have higher conductivity (10 S/m) than pure (10−11 S/m). The investigation electrical stimulation human...
This paper discusses the mechanical and physicochemical properties of film matrices based on chitosan, as well possibility optimizing these by adding chitin nanofibrils. It is shown that with introduction nanofibrils a filler, stability composite materials increases. By varying concentration nanofibrils, it possible to obtain spectrum samples different bioactive for growth human dermal fibroblasts. Film nanocomposite chitosan 5 wt % have an optimal balance bioactivity in relation culture
Sustainable polymer composites derived from industrial waste offer a viable solution to resource scarcity and environmental concerns. This review explores the development, properties, applications of incorporating fly ash, slag, agricultural residues, recycled polymers. Utilizing these materials minimizes impact while enhancing mechanical, thermal, chemical properties. Key processing techniques such as melt blending, extrusion, additive manufacturing contribute performance optimization. The...
Bioactive biodegradable chitosan films containing chitin nanofibrils have been developed for use as face masks in cosmetology. It was found that thermal modification of promotes the transformation polymer into insoluble form without alkali or aldehydes. The structure and properties were studied by IT spectroscopy, atomic force microscopy, thermogravimetric analysis, X-ray structural analysis. Analysis infrared (IR) spectra showed addition accelerates process composite films. This is apparent...
New tubular conduits have been developed for the regeneration of peripheral nerves and repair defects that are larger than 3 cm. The consist a combination poly(L-lactide) nanofibers chitosan composite fibers with chitin nanofibrils. In vitro studies were conducted to assess biocompatibility using human embryonic bone marrow stromal cells (FetMSCs). revealed good adhesion differentiation on just one day after cultivation. Furthermore, an in vivo study was carried out evaluate...
Composite chitosan fibers filled with chitin nanofibrils (CNF) were obtained by the wet spinning method. The paper discusses mechanical properties of such type and their hemocompatibility, as well possibility optimizing these adding nanofibrils. It was shown that low CNF concentration (about 0.5%) leads to an increase in fiber tensile strength due additional orientation macromolecules. At same time, content CNF, stability composite a humid medium increases. All fibers, except 0.5% showed...
Hemorrhage occurring during and after surgery still remains one of the biggest problems in medicine. Although a large number hemostatic products have been created, there is no universal preparation; thus, development new materials an urgent task. The aim this research to increase properties chitosan by introducing chitin nanofibrils (ChNF). blood absorbance ChNF-containing sponges time-until-arrest bleeding were studied. Non-woven containing 0.5% ChNF without obtained. studies ζ-potential...
This study focused on a potential application of electrically conductive, biocompatible, bioresorbable fibers for tubular conduits aimed at the regeneration peripheral nerves. The conducting, mechanical, and biological properties composite based chitosan single-walled carbon nanotubes were investigated in this paper. It was shown that introducing 0.5 wt.% SWCNT into facilitated formation denser fiber structure, resulting improved strength (σ = 260 MPa) elastic (E 14 GPa) characteristics....
The influence of chitin nanofibrils on the production chitosan-based fibers is described in article.The and composite were prepared from an aqueous solution 2-% acetic acid using coagulation method.The incorporation 0.1-0.3% mass fractions CNs into chitosan matrix contributed to increase mechanical properties fibers.The nanofibers spun with electrospinning a 70-% acetic-acid containing 10 % PEO 1-30 CNs.The introduction solutions accelerates considerably quality at electric field decreases...
Abstract In the work composite films based on chitosan and single-walled carbon nanotubes (0.01%, 0.1%, 0.5% 1%) were obtained. The electrical mechanical properties of measured. It was shown that a film with 1% SWCNT has sufficient conductivity optimal for bioactivity culture human dermal fibroblasts. been established treating in corona discharge changes structure increases adhesion proliferation fibroblast cells.