Assem Shinibekova

@dulaty.kz

Chemistry and chemical technology
Taraz Regional University named by M.Kh.Dulaty University

Assem Shinibekova


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https://researchid.co/assemstar

RESEARCH, TEACHING, or OTHER INTERESTS

Chemical Engineering, Analytical Chemistry
6

Scopus Publications

117

Scholar Citations

5

Scholar h-index

3

Scholar i10-index

Scopus Publications

  • Solvent-Free Synthesis of P(MMA-AA) Copolymers and Their Application as Sustainable Primers for Concrete Substrates
    Aisha Nurlybayeva, Zhansaya Urkimbayeva, Raikhan Rakhmetullayeva, Raushan Taubayeva, Nurbanu Sarova, et al.
    Polymers, 2025
    This study reports the solvent-free synthesis, structural characterization, and performance evaluation of poly (methyl methacrylate-co-acrylic acid) [P(MMA-AA)] copolymers intended for use as sustainable concrete primers and industrial coatings. A series of copolymers with varying MMA-AA molar ratios were synthesized via bulk radical polymerization and characterized using 1H and 13C nuclear magnetic resonance (NMR) spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The resulting materials were evaluated for their physical mechanical properties, including viscosity, tensile strength, surface hardness, and wettability. The findings revealed that higher MMA content improved the thermal stability, tensile strength, and hardness of the coatings, whereas increasing the AA content enhanced crosslinking density, hydrophilicity, and chemical resistance. These results demonstrate the potential of solvent-free P(MMA-AA) copolymers as environmentally friendly, high-performance alternatives to conventional solvent-based systems in protective coating applications.
  • Applications and Advantages of Cellulose–Chitosan Biocomposites: Sustainable Alternatives for Reducing Plastic Dependency
    Akmaral Darmenbayeva, Gaziza Zhussipnazarova, Reshmy Rajasekharan, Bakytgul Massalimova, Roza Zharlykapova, et al.
    Polymers, 2025
    This review presents a comprehensive review of cellulose–chitosan-based biocomposites that have high potential as sustainable alternatives to synthetic polymers. These biocomposites, due to biocompatibility, biodegradability, and antimicrobial properties, attract attention for wide application in various industries. This review includes modern methods for producing cellulose–chitosan composites aimed at improving their mechanical and chemical properties, such as strength, flexibility, and water resistance. Particular attention is paid to the use of composites in packaging materials, where they provide protection and durability of products, and help reduce the environmental footprint. In medicine, such composites are used for drug delivery and tissue engineering, providing controlled release of active substances and tissue regeneration. In addition, their advantages in wastewater treatment are discussed, where the composites effectively remove heavy metal ions and organic pollutants due to their high sorption capacity. This study focuses on the wide potential of cellulose–chitosan biocomposites and their role in solving environmental problems.
  • Adsorption of Bichromate and Arsenate Anions by a Sorbent Based on Bentonite Clay Modified with Polyhydroxocations of Iron and Aluminum by the “Co-Precipitation” Method
    Bakytgul Kussainova, Gaukhar Tazhkenova, Ivan Kazarinov, Marina Burashnikova, Aisha Nurlybayeva, et al.
    Molecules, 2024
    The physicochemical properties of natural bentonite and its sorbents were studied. It has been established the modification of natural bentonites using polyhydroxoxides of iron (III) (mod.1_Fe_5-c) and aluminum (III) (mod.1_Al_5-c) by the “co-precipitation” method led to changes in their chemical composition, structure, and sorption properties. It was shown that modified sorbents based on natural bentonite are finely porous (nanostructured) objects with a predominance of pores of 1.5–8.0 nm in size. The modification of bentonite with iron (III) and aluminum compounds by the “co-precipitation” method also leads to an increase in the sorption capacity of the obtained sorbents with respect to bichromate and arsenate anions. A kinetic analysis showed that, at the initial stage, the sorption process was controlled by an external diffusion factor, that is, the diffusion of the sorbent from the solution to the liquid film on the surface of the sorbent. The sorption process then began to proceed in a mixed diffusion mode when it limited both the external diffusion factor and the intra-diffusion factor (diffusion of the sorbent to the active centers through the system of pores and capillaries). To clarify the contribution of the chemical stage to the rate of adsorption of bichromate and arsenate anions by the sorbents under study, kinetic curves were processed using equations of chemical kinetics (pseudo-first-order, pseudo-second-order, and Elovich models). It was found that the adsorption of the studied anions by the modified sorbents based on natural bentonite was best described by a pseudo-second-order kinetic model. The high value of the correlation coefficient for the Elovich model (R2 > 0.9) allows us to conclude that there are structural disorders in the porous system of the studied sorbents, and their surfaces can be considered heterogeneous. Considering that heterogeneous processes occur on the surface of the sorbent, it is natural that all surface properties (structure, chemical composition of the surface layer, etc.) play an important role in anion adsorption.
  • Performance and modeling of Ni(II) adsorption from low concentrated wastewater on carbon microspheres prepared from tangerine peels by FeCl3-assisted hydrothermal carbonization
    Jose L. Diaz De Tuesta, Fernanda F. Roman, Vitor C. Marques, Adriano S. Silva, Ana P.F. Silva, et al.
    Journal of Environmental Chemical Engineering, 2022
  • Assisted hydrothermal carbonization of agroindustrial byproducts as effective step in the production of activated carbon catalysts for wet peroxide oxidation of micro-pollutants
    Jose L. Diaz de Tuesta, Marcus C. Saviotti, Fernanda F. Roman, Gabriel F. Pantuzza, Hiram J.F. Sartori, et al.
    Journal of Environmental Chemical Engineering, 2021
  • Synthesis and research of copolymers on the basis of methyl methacrylate and their application in paint and varnish coverings
    International Journal of Chemical Sciences, 2015

RECENT SCHOLAR PUBLICATIONS

  • Solvent-Free Synthesis of P (MMA-AA) Copolymers and Their Application as Sustainable Primers for Concrete Substrates
    A Nurlybayeva, Z Urkimbayeva, R Rakhmetullayeva, R Taubayeva, ...
    Polymers 17 (22), 3039 , 2025
    2025
    Citations: 1
  • Applications and advantages of cellulose–chitosan biocomposites: sustainable alternatives for reducing plastic dependency
    A Darmenbayeva, G Zhussipnazarova, R Rajasekharan, B Massalimova, ...
    Polymers 17 (1), 23 , 2024
    2024
    Citations: 24
  • Adsorption of bichromate and arsenate anions by a sorbent based on bentonite clay modified with polyhydroxocations of iron and aluminum by the “Co-Precipitation” method
    B Kussainova, G Tazhkenova, I Kazarinov, M Burashnikova, ...
    Molecules 29 (15), 3709 , 2024
    2024
    Citations: 7
  • Performance and modeling of Ni (II) adsorption from low concentrated wastewater on carbon microspheres prepared from tangerine peels by FeCl3-assisted hydrothermal carbonization
    JLD De Tuesta, FF Roman, VC Marques, AS Silva, APF Silva, TC Bosco, ...
    Journal of Environmental Chemical Engineering 10 (5), 108143 , 2022
    2022
    Citations: 38
  • Assisted hydrothermal carbonization of agroindustrial byproducts as effective step in the production of activated carbon catalysts for wet peroxide oxidation of micro-pollutants
    JLD de Tuesta, MC Saviotti, FF Roman, GF Pantuzza, HJF Sartori, ...
    Journal of Environmental Chemical Engineering 9 (1), 105004 , 2021
    2021
    Citations: 42
  • Synthesis and research of copolymers on the basis of methyl methacrylate and their application in paint and varnish coverings
    A Nurlybayeva, M Sakhy, ES Negim, E Rustem, A Shinibekova
    International Journal of Chemical Sciences 13 (2), 922-934 , 2015
    2015
    Citations: 5

MOST CITED SCHOLAR PUBLICATIONS

  • Assisted hydrothermal carbonization of agroindustrial byproducts as effective step in the production of activated carbon catalysts for wet peroxide oxidation of micro-pollutants
    JLD de Tuesta, MC Saviotti, FF Roman, GF Pantuzza, HJF Sartori, ...
    Journal of Environmental Chemical Engineering 9 (1), 105004 , 2021
    2021
    Citations: 42
  • Performance and modeling of Ni (II) adsorption from low concentrated wastewater on carbon microspheres prepared from tangerine peels by FeCl3-assisted hydrothermal carbonization
    JLD De Tuesta, FF Roman, VC Marques, AS Silva, APF Silva, TC Bosco, ...
    Journal of Environmental Chemical Engineering 10 (5), 108143 , 2022
    2022
    Citations: 38
  • Applications and advantages of cellulose–chitosan biocomposites: sustainable alternatives for reducing plastic dependency
    A Darmenbayeva, G Zhussipnazarova, R Rajasekharan, B Massalimova, ...
    Polymers 17 (1), 23 , 2024
    2024
    Citations: 24
  • Adsorption of bichromate and arsenate anions by a sorbent based on bentonite clay modified with polyhydroxocations of iron and aluminum by the “Co-Precipitation” method
    B Kussainova, G Tazhkenova, I Kazarinov, M Burashnikova, ...
    Molecules 29 (15), 3709 , 2024
    2024
    Citations: 7
  • Synthesis and research of copolymers on the basis of methyl methacrylate and their application in paint and varnish coverings
    A Nurlybayeva, M Sakhy, ES Negim, E Rustem, A Shinibekova
    International Journal of Chemical Sciences 13 (2), 922-934 , 2015
    2015
    Citations: 5
  • Solvent-Free Synthesis of P (MMA-AA) Copolymers and Their Application as Sustainable Primers for Concrete Substrates
    A Nurlybayeva, Z Urkimbayeva, R Rakhmetullayeva, R Taubayeva, ...
    Polymers 17 (22), 3039 , 2025
    2025
    Citations: 1