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Influence of nanoparticle weight fraction on morphology and thermal properties of HDPE/SiO2 composite films

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High-density polyethylene (HDPE) composite films with di erent amounts of SiO 2 nanoparticles ( 1 - 20 % vol.) were prepared by melt blending using a high-pressure thermal pressing technique. The morphological characterization, surface topology and distribution of nanoparticles in polymer matrix of nanocomposites were investigated by using Scanning electron microscopy (SEM) and atomic force microscopy (AFM). The thermal characterization of the nanocomposites were investigated by di erential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). SEM and AFM results revealed that silica nanoparticles aggregates were distributed mainly homogeneously. The nano-fillers change supramolecular structure and surface morphology of HDPE strongly. DSC results showed addition of nano-SiO 2 particles slightly decrease the melting temperature by 3-4 degree but strongly decrease the crystallization temperature by 7-8 degree. And crystallinity degree of the HDPE decrease. The thermal stability of the composite films was measured using Thermo Gravimetric analysis (TGA). Polymer nanocomposite showed higher thermal stability as compared with pure HDPE. Composites with 20% vol. of nano-SiO 2 have maximum thermal degradation temperature of 498.4 ◦ C.

About the Author

A. A. Nabiyev
ANAS Institute of Radiation Problems; Joint Institute for Nuclear Research


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For citations:

Nabiyev A.A. Influence of nanoparticle weight fraction on morphology and thermal properties of HDPE/SiO2 composite films. Eurasian Journal of Physics and Functional Materials. 2020;4(1):38-49.

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ISSN 2522-9869 (Print)
ISSN 2616-8537 (Online)