Processing and Characterization of Polypropylene Nanocomposite Films Reinforced with Hexagonal Boron Nitride Nanosheets

Authors

  • Gülay Bayramoğlu
    Affiliation
    Yalova Vocational School, Department of Textile - Clothing, Shoes and Leather, Yalova University, 87 Mehmet Durmam Caddesi , 77100 Yalova Turkey
  • Mehmet Mudu
    Affiliation
    Institute of Graduate Studies, Department Polymer Materials Engineering, Yalova University, 77200 Yalova, P.O.B. 77100, Turkey
https://doi.org/10.3311/PPch.20589

Abstract

In this study, we synthesized hexagonal boron nitride nanosheets (h-BNN) via the molten hydroxide exfoliation method which results in small flakes and nanoscrolls. The resultant h-BNNs can be dispersed in various solvents such as water, ethanol, and acetone, and form a stable dispersion. The morphological and structural analysis of h-BNNs were performed with Fourier Transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), and scanning electron microscopy (SEM). The masterbatch (MB) method was used to incorporate the h-BNNs into the polypropylene (PP) matrix via melt mixing. Dilution and film production processes were performed using a twin screw extruder. Nanocomposite films having an h-BNN weight ratio of 1%, 2%, 3%, and 5% were prepared. Thermogravimetric analyzer (TGA) and differential scanning calorimetry (DSC) were used to investigate the thermal stability. Crystallization (Tc) temperatures were increased with the increased amount of h-BNNs and h-BNNs nucleating agent behavior on the PP crystallization was observed. Oxidation induction time (OIT) of the pure PP was increased from 8.84 min to 17.82 min. The results show a considerable effect of the h-BNN content on the thermo-oxidative stability of the nanocomposites studied. The rheological and mechanical properties of the PP-hBNN nanocomposite films were also determined depending on the particle loading ratio. Optimum particle content providing the best thermal, mechanical, and rheological properties were found to be 3% wt.

Keywords:

nanocomposite films, hexagonal boron nitride nanosheets, polypropylene, oxidation induction time

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Published Online

2023-02-01

How to Cite

Bayramoğlu, G., Mudu, M. “Processing and Characterization of Polypropylene Nanocomposite Films Reinforced with Hexagonal Boron Nitride Nanosheets”, Periodica Polytechnica Chemical Engineering, 67(1), pp. 94–103, 2023. https://doi.org/10.3311/PPch.20589

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Articles