IMPROVING THE OPERATIONAL PROPERTIES AND CHEMICAL STABILITY OF POLYETHYLENE GEOMEMBRANES FILLED WITH SHEROBOD ARGILLITE FOR AGGRESSIVE SALINE SOIL CONDITIONS

M.N. Davronova; F.B. Eshkurbanov; P.J. Tojiyev; J.A. Bakirov; J.B. Abduraimov; N.Kh. Karshiyev; A.A. Ashurova

doi:10.5281/zenodo.21466505

Authors

M.N. Davronova Termez Branch of the Tashkent Medical Academy Author
F.B. Eshkurbanov Termez State University of Engineering and Agrotechnology Author
P.J. Tojiyev Termiz State Pedagogical Institute Author
J.A. Bakirov Termez University of Economics and Service Author
J.B. Abduraimov Termez State University of Engineering and Agrotechnology Author
N.Kh. Karshiyev Denau Institute of Entrepreneurship and Pedagogy Author
A.A. Ashurova Termez State University of Engineering and Agrotechnology Author

DOI:

https://doi.org/10.5281/zenodo.21466505

Keywords:

HDPE nanocomposites, clay-polymer interfacial interaction, tortuosity coefficient, environmental stress crack resistance, thermomechanical properties, mineral fillers, long-term durability in saline environments.

Abstract

This study investigates the stability of nanocompositegeomembranes based on high-density polyethylene,modified with local argillite minerals from the Sherabad deposit, under conditions of aggressive saline soil.
The primary objective of the research is to enhance the chemical degradation resistance and the physical-mechanical properties of the polymer material using nanofillers. Nanocomposite samples were prepared by
incorporating various amounts (1-7 wt. %) of argillite into the high-density polyethylene melt via
extrusion. The chemical stability of the materials was tested under long-term exposure (90 days) to highly mineralized (sulfate and chloride) aggressive environments. Scanning electron microscopy (SEM) analysis showed a uniform distribution of argillite particles within the polymer matrix and the formation of a tortuous path effect. The results indicate that the addition of an optimal amount of argillite, specifically 5%, increased the tensile strength of the geomembrane by 23% and significantly reduced the diffusion rate of salt ions.Thesefindings provide a scientific basis for the potential of creating highly durable and effective
geomembranes for hydrotechnical and land reclamation structures using local mineral raw materials.

Author Biographies

M.N. Davronova, Termez Branch of the Tashkent Medical Academy

Termez Branch of the Tashkent Medical Academy,Termiz, Uzbekistan
F.B. Eshkurbanov, Termez State University of Engineering and Agrotechnology

Termez State University of Engineering and Agrotechnology, Termiz,Uzbekistan
P.J. Tojiyev, Termiz State Pedagogical Institute

Termiz State Pedagogical Institute, Termez, Uzbekistan
J.A. Bakirov, Termez University of Economics and Service

Termez University of Economics and Service, Termez, Uzbekistan
J.B. Abduraimov, Termez State University of Engineering and Agrotechnology

Termez State University of Engineering and Agrotechnology, Termiz,Uzbekistan
N.Kh. Karshiyev, Denau Institute of Entrepreneurship and Pedagogy

Denau Institute of Entrepreneurship and Pedagogy, Denau, Uzbekistan
A.A. Ashurova, Termez State University of Engineering and Agrotechnology

Termez State University of Engineering and Agrotechnology, Termiz,Uzbekistan

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