Smykovskaya Regina Sergeevna
@chph.ras.ru
Scopus Publications
- Effect of AgNPs on PLA-Based Biocomposites with Polysaccharides: Biodegradability, Antibacterial Activity and Features
Kristine V. Aleksanyan, Elena E. Mastalygina, Regina S. Smykovskaya, Nadezhda A. Samoilova, Viktor A. Novikov, et al.
International Journal of Molecular Sciences, 2025
According to existing ecological problems, one of the promising developments is the creation of polyfunctional materials, which can be biodegradable, along with possessing antibacterial activity. The present research proposes biocomposites based on PLA with silver nanoparticles (AgNPs) and natural polysaccharides obtained in a twin-screw extruder. Introduction of polysaccharides to PLA-based biocomposites with/without AgNPs led to significant decrease in the elastic modulus and tensile strength, while the elongation at break remained almost unchanged. Thanks to the presence of natural polysaccharides, there was intensified biodegradation in soil despite the AgNP availability. The maximal mass loss was 29% for the PLA–PEG1000–starch + AgNPs (80:10:10 + 0.5 wt%) biocomposite. Analyses of the systems before and after soil exposure were carried out using DSC and FTIR spectroscopy methods. According to a thermal analysis, it was found that PLA crystalline regions degrade during exposure to soil. The same feature was detected during the spectral analysis. The intensity of the characteristic absorption bands of PLA decreased. Furthermore, it was found that the dark areas on the surface of the materials are of a polysaccharide nature and may be signs of biofouling of the materials by microbial flora. The tests on fungus resistance showed that biocidal additives such as AgNPs in PLA-based biocomposites with polysaccharides did not inhibit the development of mycelial fungi–biodestructors. And the increased amount of chitosan in the films contributed to their more active destruction by the end of the observation period. It was demonstrated that such biocomposites can inhibit bacterial growth. - Nanotechnological advancement in green hydrogen production from organic waste: Recent developments, techno–economic, and life cycle analyses
Chandra Tejaswi Padigala, Gour Gopal Satpati, Mamata Singhvi, Lalit Goswami, Anamika Kushwaha, et al.
International Journal of Hydrogen Energy, 2024 - Development of Poly(lactic acid)-Based Biocomposites with Silver Nanoparticles and Investigation of Their Characteristics
Kristine V. Aleksanyan, Regina S. Smykovskaya, Nadezhda A. Samoilova, Viktor A. Novikov, Aleksander M. Shakhov, et al.
Polymers, 2024
Nowadays, the demand for food packaging that maintains the safety and quality of products has become one of the leading challenges. It can be solved by developing functional materials based on biodegradable polymers, such as poly(lactic acid) (PLA). In order to develop PLA-based functional materials with antibacterial activity, silver nanoparticles (AgNPs) were introduced. In the present study, AgNPs stabilized by a copolymer of ethylene and maleic acid were used. Under the joint action of shear deformations and high temperature, the biocomposites of PLA with poly(ethylene glycol) and AgNPs were produced. Their mechanical and thermal characteristics, water absorption, and structure were investigated using modern methods (DSC, FTIR, Raman spectroscopy, SEM). The effect of AgNP concentration on the characteristics of PLA-based biocomposites was detected. Based on the results of antibacterial activity tests (against Gram-positive and Gram-negative bacteria, along with yeast) it is assumed that these systems have potential as materials for extending the storage of food products. At the same time, PLA–PEG biocomposites with AgNPs possess biodegradability. - Preparation and Study of the Properties of Biodegradable Keratin-Containing Compositions
R. S. Smykovskaya, O. P. Kuznetsova, T. I. Medintseva, A. V. Kireynov, V. G. Volik, et al.
Polymer Science Series D, 2022 - Mechanical and Rheological Properties of Biocomposites Based on Polyethylene and Keratin
R. S. Smykovskaya, O. P. Kuznetsova, T. I. Medintseva, V. G. Volik, E. V. Prut, et al.
Russian Journal of Physical Chemistry B, 2022 - Sctructure and Properties of Biocomposities Based on Keratin and Thermoplastic Polymers
R. S. Smykovskaya, O. P. Kuznetsova, V. G. Volik, E. V. Prut
Russian Journal of Physical Chemistry B, 2020 - New polymer composites based on keratin and polyethylene
E. V. Prut, R. S. Smykovskaya, O. P. Kuznetsova, Yu. I. Deryabina, V. G. Volik, et al.
Doklady Physical Chemistry, 2017
