Open Access Received: 11 September 2025   |   Accepted: 24 October 2025   |   Published: 10 November 2025

MECHANICAL PROPERTIES OF NANO CALCIUM CARBONATE/POLYETHYLENE NANOCOMPOSITES

Normuradov N. F., Khaqberdiyev E. O., Berdinazarov Q. N., Shahobutdinov S. Sh., Kudishkin V. O., Ashurov N. R.

Institute of Polymer Chemistry and Physics Uzbekistan Academy of Sciences, 100128, Tashkent, Uzbekistan Introduction

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Abstract. This study is devoted to studying the mechanical properties of nanocomposites by introducing and increasing the proportion of nanocalcium carbonate (nano-CaCO₃) into polyethylene as an alternative to fillers. Polyethylene nanocomposites were obtained by incorporating industrially used 80 nm nanocalcium carbonate particles and laboratory-produced nanocalcium carbonate particles with particle sizes ranging from 100 nm to 900 nm into polyethylene. The size of nano-CaCO₃ particles was examined using SEM. The two types of nanocalcium carbonate particles used as fillers were introduced into polyethylene in proportions of 5%, 10%, and 15%, and the physical and mechanical properties of the samples were studied. When comparing the mechanical properties of the obtained samples with pure polyethylene, It was observed that the Young's modulus of samples obtained with industrially used calcium carbonate more than doubled with increasing nanocalcium carbonate content, the mechanical strength increased by up to 1.5 times, but the relative elongation decreased by up to 4 times. It was observed that the Young's modulus of the composites obtained in the presence of nanocalcium carbonate obtained under laboratory conditions increased by up to 2 times, the mechanical strength values remained almost unchanged, and the relative elongation decreased by almost 4 times. The mechanical properties were compared to see how the size of nanocalcium carbonate particles affected the mechanical properties of polyethylene, and it was found that the smaller the particle size, the more positive the mechanical properties.

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Key words. Polyethylene, Nano-CaCO₃ , physical and mechanical properties, nanocomposite


DOI: http://uzpolymerjournal.com/articles/article.php?id=250307

*Corresponding author: Normuradov N. F., Institute of Polymer Chemistry and Physics Uzbekistan Academy of Sciences, 100128, Tashkent, Uzbekistan Introduction

Citation: Normuradov N. F., Khaqberdiyev E. O., Berdinazarov Q. N., Shahobutdinov S. Sh., Kudishkin V. O., Ashurov N. R., MECHANICAL PROPERTIES OF NANO CALCIUM CARBONATE/POLYETHYLENE NANOCOMPOSITES. Uzbekistan Journal of Polymers, Vol. 4(3) 2025: pp.68-73. DOI: http://uzpolymerjournal.com/articles/article.php?id=250307

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