Quality Sustainability Of Recycled High Density Polyethylene (HDPE)

Open Access

Year : 2025 | Volume : 13 | Issue : 05 | Page : 28 37
    By

    Naydenova-Marinova Petranka,

  • Bonchev Marin,

  • Velev Petar,

  1. Assistant Professor, Department of Organic Synthesis, University of Chemical Technology and Metallurgy, Sofia, Bulgaria
  2. PhD Student, PMB Industries Ltd, Pazardzhik, Bulgaria
  3. Associate Professor, Department of Polymer Engineering, University of Chemical Technology and Metallurgy, Sofia, Bulgaria

Abstract

The main way to reduce the generated large amounts of polymer waste is their recycling, their return to the processes of processing and reuse. The main and most commonly used method is mechanical recycling, in which some of the characteristics of the processed material deteriorate. It is known that the properties of the recyclate are most significantly affected by the homogeneity and the degree of aging of the end-of-life plastic products. Since polypropylene is a major pollutant in waste high-density polyethylene, this study tracked to what extent and what content of polypropylene leads to a decrease in the properties of the regranulate. For this purpose, the authors tracked the rheological and mechanical characteristics of high-density polyethylene with polypropylene impurities. The percentage content of polypropylene was established, which affects the mechanical properties of the regranulate. The processability, quality and homogeneity of the collected high-density polyethylene after use were studied, as well as the possibilities for improving the quality of the granulate produced from it. Data from a study of the behavior of fresh high-density polyethylene with admixtures of polypropylene recyclate in a certain percentage were compared with those of high-density polyethylene collected after use. In this way, the working group established the influence of the processing process on the rheology and mechanical properties of the recyclate and the degree of degradation of the polymers.

Keywords: High density polyethylene, polypropylene, mechanical recycling, properties, waste.

[This article belongs to Journal of Polymer and Composites ]

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How to cite this article:
Naydenova-Marinova Petranka, Bonchev Marin, Velev Petar. Quality Sustainability Of Recycled High Density Polyethylene (HDPE). Journal of Polymer and Composites. 2025; 13(05):28-37.
How to cite this URL:
Naydenova-Marinova Petranka, Bonchev Marin, Velev Petar. Quality Sustainability Of Recycled High Density Polyethylene (HDPE). Journal of Polymer and Composites. 2025; 13(05):28-37. Available from: https://journals.stmjournals.com/jopc/article=2025/view=223109


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Regular Issue Open Access Original Research
Volume 13
Issue 05
Received 15/07/2025
Accepted 05/08/2025
Published 15/08/2025
Publication Time 31 Days
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