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Effect of pro-oxidant concentration on characteristics of packaging films of cobalt stearate filled polypropylene

  • Sunil Sable , Sanjeev Ahuja and Haripada Bhunia EMAIL logo
Published/Copyright: August 3, 2020
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Journal of Polymer Engineering
From the journal Journal of Polymer Engineering Volume 40 Issue 8

Abstract

In this work, polypropylene (PP) filled with different proportions of CoSt were prepared in a twin-screw extruder by compounding technique. Eight films of these compounds were prepared using compression moulding. The modified PP films were characterized for chemical, physical, thermal, and morphological properties (before and after biodegradation). The biodegradation of the CoSt filled PP films was studied under controlled composting conditions, and the degradation intermediates were evaluated for their ecotoxicological impact. The CoSt present in the PP film was confirmed by Fourier transform infrared spectroscopy. As the addition of CoSt was progressively increased, the tensile strength and thermal stability decreased as shown by UTM and thermogravimetric analysis. The compounding of CoSt in PP reduced its crystallinity as revealed by the differential scanning calorimetry and X-ray diffraction analysis, and this led to enhanced degradation of PP. After biodegradation, SEM results of modified PP films showed rougher morphology than before biodegradation. The maximum biodegradation (19.78%) was shown by the film having 2 phr CoSt. The ecotoxicity tests of the degraded material, namely, microbial test, plant growth test, and earthworm acute-toxicity test demonstrated that the biodegradation intermediates were nontoxic. Hence, CoSt filled PP has high industrial potential to make biodegradable flexible packaging.

Keywords: biodegradability; compounding; ecotoxicity; polypropylene; pro-oxidant
Corresponding author: Haripada Bhunia, Department of Chemical Engineering, Thapar Institute of Engineering and Technology, Patiala147004, Punjab, India, E-mail:

Funding source: Council of Scientific and Industrial Research

Award Identifier / Grant number: 22(00745)/17/EMR-II

Acknowledgments

The authors gratefully acknowledge the valuable comments and suggestions of Dr. P. K. Bajpai, Ex-Distinguished Professor, TIET, Patiala, Punjab, India.The authors would like to thank Dr. Vishal Goel, IOCL Faridabad, India for extending the compounding facilities.

  1. Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: The authors wish to express their sincere thanks to the Council of Scientific and Industrial Research (CSIR), Govt. of India for financial support through scheme number 22(00745)/17/EMR-II.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Supplementary Material

The online version of this article offers supplementary material (https://doi.org/10.1515/polyeng-2020-0065).

Received: 2020-03-26
Accepted: 2020-06-06
Published Online: 2020-08-03
Published in Print: 2020-09-25

© 2020 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Material properties
  3. Influences of interface structure on tribological properties of engineering polymer blends: a review
  4. Effect of pro-oxidant concentration on characteristics of packaging films of cobalt stearate filled polypropylene
  5. Effects of lamellar microstructure of retinoic acid loaded-matrixes on physicochemical properties, migration, and neural differentiation of P19 embryonic carcinoma cells
  6. Synthesis of Ag@PANI nanocomposites by complexation method and their application as label-free chemo-probe for detection of mercury ions
  7. Preparation and assembly
  8. Fabrication of ultrahigh-molecular-weight polyethylene porous implant for bone application
  9. Green composites based on Atriplex halimus fibers and PLA matrix
  10. Rubber-ceramic composites applicable in flexible antennas
  11. Star-shaped arylacetylene resins derived from silicon
  12. Engineering and processing
  13. Mathematical analysis of a non-Newtonian polymer in the forward roll coating process
https://doi.org/10.1515/polyeng-2020-0065
Keywords for this article
biodegradability; compounding; ecotoxicity; polypropylene; pro-oxidant

Articles in the same Issue

  1. Frontmatter
  2. Material properties
  3. Influences of interface structure on tribological properties of engineering polymer blends: a review
  4. Effect of pro-oxidant concentration on characteristics of packaging films of cobalt stearate filled polypropylene
  5. Effects of lamellar microstructure of retinoic acid loaded-matrixes on physicochemical properties, migration, and neural differentiation of P19 embryonic carcinoma cells
  6. Synthesis of Ag@PANI nanocomposites by complexation method and their application as label-free chemo-probe for detection of mercury ions
  7. Preparation and assembly
  8. Fabrication of ultrahigh-molecular-weight polyethylene porous implant for bone application
  9. Green composites based on Atriplex halimus fibers and PLA matrix
  10. Rubber-ceramic composites applicable in flexible antennas
  11. Star-shaped arylacetylene resins derived from silicon
  12. Engineering and processing
  13. Mathematical analysis of a non-Newtonian polymer in the forward roll coating process
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