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Optical, electrical, dielectric and mechanical properties of microcrystalline cellulose/starch based biocomposite films

  • Othmane Rhalmi EMAIL logo , Khadija Ben Zarouala , Taoufik Garmim , Khadija Chouni , Adil El Meskine , Redouane Lahkale EMAIL logo and Elmouloudi Sabbar
Published/Copyright: October 29, 2024
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Abstract

In this work, we have synthesized biocomposite films based on starch reinforced with microcrystalline cellulose (MCC) with different MCC/starch weight contents (0, 1, 3, 5, and 7 %). These films were characterized by various techniques such as X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), and energy-dispersive X-ray analysis (EDX), which showed dispersed and biocompatible structures for MCC and starch. It was found that the increase in MCC content (from 0 to 7 wt%) led to decreasing the water solubility, and reducing the absorption coefficients, transmission percentages and electrical conductivity. However, the improvement of dielectric and mechanical properties was demonstrated by decreasing the dielectric loss tangent and increasing the Young’s modulus, respectively making them suitable for dielectric and mechanical applications.


Corresponding authors: Othmane Rhalmi and Redouane Lahkale, Department of Chemistry, Faculty of Sciences, Laboratory of Material’s Physical-Chemicals, University of Chouaîb Doukkali, El Jadida, Morocco, E-mail: (O. Rhalmi), (R. Lahkale)

  1. Research ethics: Not applicable.

  2. Informed consent: Not applicable.

  3. Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  4. Use of Large Language Models, AI and Machine Learning Tools: None declared.

  5. Conflict of interest: The authors state no conflict of interest.

  6. Research funding: None declared.

  7. Data availability: Not applicable.

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Received: 2023-12-13
Accepted: 2024-09-05
Published Online: 2024-10-29
Published in Print: 2024-11-26

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