Nanocomposites for Packaging Applications: Synthesis, Characterization, Thermal and Microbial Degradation of Its Residues for Plant Growth

Document Type : Original Research Paper

Authors

1 Faculty of Science, Ilam University, P.O.Box 69315516, Ilam, Iran.

2 Department of Biology, Faculty of Science, Biotechnology and Biological Science Research Center, Shahid Chamran University of Ahvaz, Ahvaz, Iran.

3 Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.

4 Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.

5 School of Engineering, University of British Columbia - Okanagan, 1137 Alumni Avenue, Kelowna, V1V 1V7, Canada.

6 Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G1H9, Canada.

Abstract

Environmental pollution, caused by traditional plastic packaging, has recently become more severe due to non-biodegradable nature of petroleum-based plastics. The present research studies the preparation of polyvinyl alcohol (PVOH)/Starch (ST)/Humic Acid (HA) contained sodium montmorillonite clay (MMT) as a plastic packaging method. It also investigates biodegradability of films in terms of microbial and thermal degradation and their residual effect on plant growth. For doing so, the research utilizes Broido Technique to obtain the activation energy of the films’ thermal degradation. The influence of HA/MMT ratio on the surface morphology and physical characteristics has also been assessed, using the Fourier Transform Infrared (FTIR) spectroscopy, Scanning Electron Microscope (SEM), and thermogravimetric analysis (TA). After 12 days of microbial degradation, the total remaining solids are 32.12 wt% (PVOH/ST/HA (3%)/MMT (1%)); 48.17 wt% (PVOH/ST/HA (3%)/MMT (3%)), and 58.82 wt% (PVOH/ST/HA (1%)/MMT (3%)). The research shows that the highest activation energy for PVOH/ST/HA (3%)/MMT (3%) is 75 kJ/mol.

Keywords

References

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Pollution
Volume 8, Issue 1
January 2022
Pages 133-145

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