Bakkara Ayagoz

EDUCATION

2007 -2011 bachelor's degree, Al-Farabi Kazakh National University, Almaty, Kazakhstan, Faculty of Chemistry.
2011-2013 magistracy, Al-Farabi Kazakh National University, Almaty, Kazakhstan, Faculty of Chemistry and Chemical Technology.
2013-2016 doctoral studies, Al-Farabi Kazakh National University, Almaty, Kazakhstan, Faculty of Chemistry and Chemical Technology.
2017 Doctoral dissertation defense at Al-Farabi Kazakh National University, Almaty, Kazakhstan

Scopus Publications

Development of optimal modes of mechanochemical treatment of technogenic raw materials with various modifiers to produce heat-insulating materials
Bakhtiyar Sadykov, Ainur Khairullina, Aida Artykbayeva, Alua Maten, Anar Zhapekova, Aigul Turesheva, Ayagoz Bakkara
Pure and Applied Chemistry, 2026
This paper presents the results of studies on the effect of mechanochemical treatment (MCT) and modification of technogenic waste based on ash and fly ash. Mechanical modification was carried out using a laboratory ball mill with the addition of organic modifiers to the system. After MCT, the physicochemical properties of the obtained modified ash and fly ash particles were studied. Heat insulators based on ash and slag after MCT have a noticeable positive effect on its rheological properties, improving its structure and heat resistance. Self-propagating high-temperature synthesis (SHS) samples with fly ash after MCT showed a significant decrease in thermal conductivity, which leads to improved heat-insulating properties. The obtained samples based on technogenic waste are effective heat-resistant and environmentally friendly materials that are superior to many traditional analogues.
Lattice fluorination-enabled programmable energetics in metastable intermolecular composites: Atomic F/O engineering and hierarchical redox control enabling instantaneous memory chip destruction
Jingwei Li, Xuwen Liu, Zhangbo Ming, Yongsheng Jia, Jinshan Sun, Yingkang Yao, Quanmin Xie, Yihao Shen, Zhichao Zhao, Guangyu Yin, Sabit Tursynbek, Meruyert Nazhipkyzy, Zhandos Tauanov, Ayagoz Bakkara, Makpal Seitzhanova
Defence Technology, 2026
As a prototypical high-energy-density reactive material system, metastable intermolecular composites (MICs) have attracted considerable interest owing to their customizable component configurations and interfacial architectures. Nevertheless, their energy release characteristics are fundamentally constrained by the formation of condensed-phase products with elevated boiling points, thereby diminishing their efficacy in applications requiring rapid pressure generation or shock wave propagation. Herein, we demonstrate a molecular-level fluorination approach that enables oxygen substitution by fluorine within bismuth oxide crystalline frameworks, yielding ternary Bi x O y F z crystals with atomically precise F/O stoichiometric control through systematic solvent polarity engineering. This energetics system, designed through a multilevel regulation strategy, realizes stepwise redox reactions of Al-F and Al-O during energy release, with the partitioning between these redox pathways being precisely allocable through hierarchical regulation. Furthermore, the pre-ignition reaction (PIR) between Bi x O y F z and Al 2 O 3 (the inert passivation shell of Al) weakens the passivation layer, lowering the ignition threshold. The in situ generation of low-boiling-point AlF 3 promotes rapid gas expansion, leading to significantly enhanced pressurization rates and deflagration wave velocities under confinement compared to conventional strategies. To evaluate energy output capabilities and validate potential safety-protection applications, the system successfully achieved instantaneous destruction of SD chips, enabling secure data erasure. This work establishes crystalline lattice fluorination as a generalized materials design strategy to transcend intrinsic limitations of MICs systems in component selection and reaction thermodynamics, providing new paradigms for adaptive energetic architectures and transient microelectromechanical applications.
Creation of Modified Aluminum Powders with Increased Reactivity for Energy Systems
Ayagoz E. Bakkara, Ainur S. Khairullina, Aida B. Artykbayeva, Alua E. Maten, Aizhan O. Nugymanova, Anar O. Zhapekova, Bakhtiyar S. Sadykov
Crystals, 2025
Aluminium plays a key role in developing modern energy technologies, from electrical systems to high-energy materials, providing a combination of functionality, economy, and reliability, but the oxide film on its particles reduces the effective reactivity. This work aims to increase the reactivity of aluminum powder by mechanochemical treatment using modifiers. The materials used were aluminum powder of the ASD brand and graphite of the GL-1 brand. The experiment subjected aluminum powder to mechanochemical treatment (MCT) with different graphite contents. It was shown that MCT significantly increases active aluminum content in the powder due to partial destruction of the oxide film on its surface. In addition, morphological analyses confirm the destruction of the oxide, the graphite coating, and the appearance of lamellar structures measuring 0–58 µm. Thermal analysis shows that the primary exothermic peak shifts from 662.6 °C to 653.9 °C for Al + 10% graphite, and the heat released increases by 27%, which means lower activation energy and more complete oxidation. However, at 20% graphite, the thermal gain decreases, since carbon shields the metal areas. Thus, the optimal content is 10% graphite: at this ratio, the best thermochemical behavior of the powder is achieved. The data obtained indicate that the MCT of aluminum powder with graphite effectively increases its reactivity. The resulting aluminum powders with modified particle surfaces facilitate the development of new technologies for the creation of various high-energy solid propellant systems. For rocket engines, preference is given to solid rocket propellant (SRP), which is a mixture of substances (components) capable of burning in the absence of air, producing a large amount of gaseous working fluid heated to a high temperature, providing thrust.
High-Temperature SHS Heat Insulators Based on Pre-Activated Mineral Raw Materials
Bakhtiyar Sadykov, Ainur Khairullina, Aida Artykbayeva, Alua Maten, Anar Zhapekova, Timur Osserov, Ayagoz Bakkara
Crystals, 2024
In this paper, the results of the technological combustion of SHS heat insulators based on mineral origins are presented. It is shown that after mechanochemical treatment of minerals—diatomite—the kinetic characteristics of the combustion process change, providing targeted formation of the phase composition, structure, and properties of the SHS composite. A positive effect of using various modifiers during the MCT of diatomite—the activation of the combustion process—was established. The selection of modifiers provides an increase in the strength of the synthesized SHS composites as a result of the formation of aluminate compounds in the synthesis products, and a decrease in thermal conductivity to 0.157 W/m*K due to the formation of the ultraporous structure of the samples.
Efficiency and Prospects of the Use of Mechanochemical Treatment to Obtain Innovative Composite Systems
Ayagoz Bakkara, Bakhtiyar Sadykov, Anar Zhapekova, Timur Oserov, Aisulu Batkal, Ainur Khairullina, Nina Mofa
Chemengineering, 2022
This review is devoted to the possibilities of using mechanochemical processing and to achievements in this field for obtaining materials for a wide range of purposes. The mechanochemical processing of various materials and compositions in energy-intensive grinding devices allows the production of innovative systems, ensuring the necessary complex structure and properties. A detailed analysis of the processes of mechanochemical processing in the production of designs for various purposes is given, and the latest practical results in this area are highlighted. A detailed analysis of the processes of mechanochemical processing in the production of structures for various purposes is given, as well as recent practical results in this area, such as the use of mechanochemical processing to increase the performance of aluminum and other metals used as a combustible substance in energy-intensive systems. This review also presents the prospects for the use of mechanochemical processing to obtain physiologically active drugs from plant materials, which is an effective method for creating new materials in the field of pharmaceuticals, animal husbandry, veterinary medicine, crop production, etc.
Energetic Compositions by Mechanochemical Treatment of Metal Powders: 3. Influence of Activated and Modified Aluminum Particles on Combustion of Thermite SiO2–Al Mixtures
A. E. Bakkara, B. S. Sadykov, Z. L. Sultanova, A. S. Khairullina, N. N. Mofa, Z. A. Mansurov
International Journal of Self Propagating High Temperature Synthesis, 2021
The influence of mechanochemical treatment (MCT) and modification of Al particles on the process of technological combustion in aluminothermic SiO2–Al mixtures was studied by XRD, SEM/EDS, and pyrometrically. Graphite, polyvinyl alcohol, and stearic acid were used as modifiers. Combined use of modifiers and MCT was found to markedly increase combustion temperature and burning velocity of thermite SiO2–Al compositions.
Preparation of silvered colloidal compositions for nanocosmetic drugs
N.N. Mofa, A.O. Zhapekova, B.S. Sadykov, A.E. Bakkara, M.I. Tulepov, B. Elouadi
Eurasian Chemico Technological Journal, 2020
The article presents the results of obtaining nanosilver aqueous suspensions by electrolysis method with variations in the quality and composition of water, the type, and quantity of modifying additives, as well as the creation of colloidal compositions consisting of silicon dioxide and nanosilver emulsion as a result of mechanochemical treatment of the system. As a modifier of silver nanoparticles, citric acid, glycerin, and ether-cellulose were used, which can form the thinnest layers on the surface of the metal particle, preventing particles from sticking together and precipitating them. It is shown that the use of modifiers in the preparation of a colloidal solution with silver particles and ultrasonic treatment of the system provide an increase and stabilization of the activated state of colloidal systems with silver nanoparticles and silicon dioxide. Obtained under the influence of ultrasonic treatment homogeneous and resistant to delamination soft gel systems containing silver and having antimicrobial activity are promising for the manufacture of drugs for cosmetic purposes.
Fabrication of Metal Powders for Energy-Intensive Combustible Compositions Using Mechanochemical Treatment: 2. Structure and Reactivity of Mechanically Activated Al–Modifier–SiO2 Mixtures
N. N. Mofa, B. S. Sadykov, A. E. Bakkara, Z. A. Mansurov
Russian Journal of Non Ferrous Metals, 2019
The results of studying the particles of the aluminum–modifier–quartz composites after mechanochemical treatment (MCT) in a planetary centrifugal mill by various physicochemical methods are presented. Graphite (C), polyvinyl alcohol (PVA), and stearic acid (SA) are used as modifiers. To increase the dispersive ability of plastic metallic powders (metal–modifier), MCT was performed in the presence of quartz, the weight fraction of which in the composite varies from 5 to 20%. The largest grinding of aluminum particles is observed with an increase in the graphite content from 5 to 20% and SiO 2 content from 5 to 10% in the composition of aluminum–modifier–quartz composites. The particle decreases, while that of crystallites increases with the MCT of the Al–SA–SiO 2 system with an increased quartz content in the composite. The maximal imperfection of aluminum after MCT is characteristic of the Al–SA–5%SiO 2 samples. An increase in the particle size and, correspondingly, a decrease in the specific surface with rather small crystallite sizes are observed after MCT for the Al–PVA–SiO 2 composition. It is shown that the imperfection of the crystalline structure of aluminum particles increases with an increase in the quartz content in the system. The synthesized powder material is a composite formation of aluminum and quartz particles bound by polymer formed based on polyvinyl alcohol in this case. The MCT of the Al–modifier–SiO 2 mixtures results in an increase in the powder activity both due to the accumulation and redistribution of defects in aluminum particles and due to the change of the surface structure due to the incorporation of modifying additives into the destructed oxide layer. The conceptual model of transformation of the surface layer and subgrain structure of aluminum particles during MCT is presented.
Using mechanochemical treatment to obtain metal powders for energy-intensive combustible compositions. 2. Structure and reactivity of mechanically activated Al–modifier–SiО2 mixtures
N. N. Mofa, B. S. Sadykov, A. E. Bakkara, Z. A. Mansurov
Izvestiya Vuzov Poroshkovaya Metallurgiya I Funktsional Nye Pokrytiya, 2019
The paper presents the results obtained when studying particles of aluminum-modifier-quartz composites by different physicochemical methods after mechanochemical treatment (MCT) in a planetary centrifugal mill. Graphite (C), polyvinyl alcohol (PVA) and stearic acid (SA) were used as modifiers. To increase the dispersibility of plastic metal powders in the composition (modifier metal), MCT was carried out in the presence of quartz with its mass fraction in the composite ranging from 5 to 20 %. The most significant grinding of aluminum particles was observed with an increase in the graphite content from 5 to 20 %, and SiO2 from 5 to 10 % in the composition of aluminum-modifier-quartz composites. The particle size decreases, while the crystallite size increases with an increase in the quartz content in the composite during the Al–SA–SiO2 system MCT. Al–SA–5%SiO2 showed the maximum defectiveness of aluminum after MCT. For the Al–PVA–SiO2 composition after MCT, an increase in the particle size and, accordingly, a decrease in the specific surface were observed at sufficiently low crystallite size values. It was shown that with an increase in the quartz content in the system, the defective crystal structure of aluminum particles increases as a result of MCT. In this case, the synthesized powder material is a composite formation of aluminum and quartz particles bound by a polymer obtained from polyvinyl alcohol. As a result of Al–modifier–SiO2 mixture MCT, powder activity increases due to the accumulation and redistribution of defects in aluminum particles, as well as changes in the surface structure occurring after modifying additives penetration into the oxide layer to be destroyed. A conceptual model for the transformation of the surface layer and subgrain structure of aluminum particles as a result of MCT is presented.
Fabrication of Metallic Powders for Energy-Intensive Combustible Compositions by Mechanochemical Treatment: 1. Peculiarities of the Structure and State of Aluminum Powder Particles Formed by Mechanochemical Treatment
N. N. Mofa, B. S. Sadykov, A. E. Bakkara, Z. A. Mansurov
Russian Journal of Non Ferrous Metals, 2018
The morphology, dispersion, structure, and average particle size of aluminum powders after mechanochemical treatment with different organic modifiers (graphite, stearic acid, and polyvinyl alcohol) are investigated by electron force microscopy, X-ray phase analysis, IR spectroscopy, EDX, and granulometric analysis, which show significant changes in the particle surface layer. It is stated that the mechanochemical treatment of aluminum with organic additives leads to the partial reduction of the surface oxide layer and several types of active centers able to enter chemical reactions when using these composites in the composition of various combustible mixtures are formed. It is found that upon an increase in the content of modifiers, i.e., graphite and polyvinyl alcohol, in the composite with these additives, the activity of aluminum increases. The increment of the activity index falls with an increase in the content of stearic acid in the Al composite. This may be because a dense encapsulating layer poorly soluble in alkali is formed when grinding the Al–C17H35COOH mixture with a large amount of stearic acid (more than 5%). Both the accumulation and redistribution of defects over the particle bulk, an increase in amount of active aluminum, and the formation of active centers and the encapsulating layer based on organic modifiers occur during the mechanical action in powders of the compositions under study.
Influence of the Type of Catalysts on the Formation of a Superhydrophobic Carbon Nanomaterial in Hydrocarbon Flames
G. T. Smagulova, M. Nazhipkyzy, B. T. Lesbaev, A. E. Bakkara, N. G. Prikhod’ko, Z. A. Mansurov
Journal of Engineering Physics and Thermophysics, 2018
Mechanochemical Treatment, Structural Peculiarities, Properties, and Reactivity of SHS Systems Based on Natural Materials. 4. Production of SHS Ceramics Based on Mechanoactivated Materials
Z. A. Mansurov, N. N. Mofa, B. S. Sadykov, Zh. Zh. Sabaev, A. E. Bakkara
Journal of Engineering Physics and Thermophysics, 2016

Publications

1. Bakkara A.E., Sadykov B.S., Zhapekova A.O., Oserov T., Batkal A., Khairullina A.S. and Mofa N.N. Efficiency and prospects of the useing of mechanochemical treatment to obtain innovative composite systems // ChemEngineering 2022, 6, 90, pp. 1-17.
2. N. Mofa, A. Zhapekova, B. Sadykov, A. Bakkara, M. Tulepov, and B. Elouadi Preparation of Silvered Colloidal Compositions for Nanocosmetic Drugs, Eurasian . J.,2020, Vol. 22, No. 1, pp. 11-18. .
3. 1. Mofa N. N., Sadykov B. S., Bakkara A. E. and Mansurov Z. A. Fabrication of Metallic Powders for Energy-Intensive Combustible Compositions by Mechanochemical Treatment: 1. Peculiarities of the Structure and State of Aluminum Powder Particles Formed by Mechanochemical Treatment // Russian Journal of Non-Ferrous Metals, 2018, Vol. 59, No. 4, pp. 450–457. .
4. Mofa N. N., Sadykov B. S., Bakkara A. E. and Mansurov Z. A. Fabrication of Metal Powders for Energy-Intensive Combustible Compositions Using Mechanochemical Treatment: 2. Structure and Reactivity of Mechanically Activated Al–Modifier–SiO2 Mixtures // Russian Journal of Non-Ferrous Metals, 2019, Vol. 60, No. 6, pp. 694–703.

RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)

Пaтeнт нa пoлeзную мoдeль №6132 Рecпубликa Кaзaхcтaн 04.06.2021г. зaявитeль РГП нa ПХВ «Инcтитут прoблeм гoрeния» Кoмитeтa нaуки МOН Рecпублики Кaзaхcтaн, Cпocoб пригoтoвлeния гeлeвых кoмпoзиций лeчeбнo-кocмeтичecкoгo нaзнaчeния / Н.Н. Мoфa, A.O. Жaпeкoвa, A.E. Бaккaрa.
Патент Сухая цементная смесь Мофа Н.Н., Баққара А.Е., Жапекова А.О., Садыков Б.С., Осеров Т.Б., Батқал А.Н., Хайруллина А.С.

INDUSTRY EXPERIENCE

Leading Research Fellow, Institute of Combustion Problems 2021 - present,

Senior Lecturer KazNU named after. al-Farabi - 2016 - present