DOI: 10.15507/2658-4123.036.202601.204-220
UDK 674.8:543.4
Physical and Chemical Characteristics of Wood Filler Two-Stage Processing
Ksenia G. Anikeeva
Post-Graduate Student, assistant of the Department of Architecture and Design of Wood Products, Kazan National Research Technological University (68 Karl Marx St., Kazan 420015, Russian Federation), ORCID: https://orcid.org/0009-0003-5128-0946, Scopus ID: 59187925100, Researcher ID: NRB-5416-2025, This email address is being protected from spambots. You need JavaScript enabled to view it.
Ruslan R. Safin
Dr.Sci. (Eng.), Professor, Head of the Department of Architecture and Design of Wood Products, Kazan National Research Technological University (68 Karl Marx St., Kazan 420015, Russian Federation), ORCID: https://orcid.org/0000-0002-0226-4232, Scopus ID: 7003561160, Researcher ID: O-9355-2015, This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
Introduction. An acute problem of modern industry is environmental pollution by plastic products, which are highly resistant to degradation and accumulate in ecosystems. This poses a threat to natural resources and requires the development of alternative materials combining strength and environmental safety. In this context, special attention is paid to wood-polymer composites (WPC), which are a promising class of biodegradable materials. Their drawback is the difficulty in ensuring a strong interaction between the hydrophilic wood filler and hydrophobic polymer matrix that directly affects the physical, mechanical and operational properties.
Aim of the Study. The study is aimed at investigating the effect of two-stage processing of wood filler (thermal modification followed by ozonation) on structural changes in its composition and the physicochemical properties of the obtained composites.
Materials and Methods. The studies were carried out using pine wood flour subjected to two-stage processing. IR spectroscopy was used to analyze the molecular structure and chemical changes. Infrared spectroscopy was used to analyze the molecular structure and chemical changes. There were also used water absorption analysis and determination of bending and tensile strength.
Results. There have been determined the bending and tensile strength, and the degree of water absorption of the material. Thermal treatment resulted in degradation of cellulose and lignin, reduction of humidity and improvement of mechanical properties. Ozonation increased the content of oxygen-containing groups, strengthened adhesion with the polymer matrix and reduced water absorption by 50%. The tensile strength increased by 17.89% and the bending strength by 15.6%.
Discussion and Conclusion. The proposed method of modifying wood filler allows improving significantly the performance characteristics of WPC. The material can be used to produce biodegradable containers for planting that opens up prospects for its application for environmentally friendly technologies. The results obtained confirm the effectiveness of the two-stage approach to filler modification and the feasibility of its use in industrial production.
Keywords: biocomposites, physicochemical properties, IR spectroscopy, tensile and bending strength, thermoplastic starch, wood flour
Conflict of interest: The authors declare that there is no conflict of interest.
For citation: Anikeeva K.G., Safin R.R. Physical and Chemical Characteristics of Wood Filler Two-Stage Processing. Engineering Technologies and Systems. 2026;36(1):204–220. https://doi.org/10.15507/2658-4123.036.202601.204-220
Authors contribution:
K. G. Anikeeva – applying statistical, mathematical, computational or other formal techniques to analyze or synthesize the study data, conducting studies, specifically carrying experiments and collecting data; critical analysis of the obtained results.
R. R. Safin – control, leadership and mentoring in the process of planning and conducting the study; formulating the idea, aims and objectives of the study.
All authors have read and approved the final manuscript.
Submitted 29.09.2025;
revised 06.11.2025;
accepted 16.12.2025
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