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Films LDPE/LLDPE made from post – consumer plastics: processing, structure, mechanical properties

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Języki publikacji
EN
Abstrakty
EN
The paper presents the results of the investigation into the themo-mechanical, rheological and structural properties of films made from recycled polyethylenes in the “foil-to-foil” system, the comparative material were films made from primary raw materials. The films were prepared by melt mixing technique in a single screw extruder. Primary polyethylenes, recyclates and their blends were used. The aim of the research was to determine the quality of the materials derived from the closed process of the recycling of polyethylene film in comparison to virgin plastics. The mechanical properties of the films were measured by tensile test and puncture test. The morphology was studied using polarized light microscopy (POM) and FT-IR measurements. DSC and shrinkage were used to determine thermal behavior and the degree of crystallinity. The results showed that the obtained recycled blends rLDPE/rLLDPE are high-quality material with good processing properties susceptible to the production of thin films. Studies on the mechanical properties of the recycled blends showed an increase in tensile strength and elongation. An increase in the melting temperature and heat of fusion, as determined from DSC, was observed with an increase in the recycled blends. Puncture results demonstrated that the post-consumer recycled film was more strength than the film made from virgin plastics. Thus, these materials may serve as valuable recycled plastics useful for packaging applications.
Twórcy
  • Poznan University of Technology, Institute of Materials Technology, Polymer Processing Division, Piotrowo 3 Street, 61-255 Poznan
  • Poznan University of Economics and Business, Faculty Commodity Science, Department of Commodity Science and Ecology of Industrial Products, Poznan, Poland
  • Lublin University of Technology, Mechanical Engineering Faculty, Nadbystrzycka 38, 20-618 Lublin, Poland
Bibliografia
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  • 18. EN 14477 Packaging – Flexible Packaging Material – Determination of puncture resistance – testmethods.
  • 19. ISO 1133-1:2011 Plastics - Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics - Part 1: Standard method.
  • 20. ISO 11357-2:2013 Plastics - Differential scanning calorimetry (DSC) - Part 2: Determination of glass transition temperature and glass transition step height.
  • 21. PN-EN ISO 527-3 Plastics - Determination of tensile properties - Part 3: Test conditions for films and sheets.
  • 22. PN-EN ISO 11501:2005 Plastics - Film and sheeting - Determination of dimensional change on heating.
Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-40f3a5b0-2f4b-4adb-8426-440e790c2fbe
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