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

• Autorzy: Czarnecka-Komorowska Dorota , Wiszumirska Karolina , Garbacz Tomasz

Identyfikatory

DOI

10.12913/22998624/92205

• 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.

Słowa kluczowe

EN

polyethylene; films; recycling; extrusion; crystallinity; FTIR; mechanical properties

PL

polietylen; filmy; recykling; wytłaczanie; krystaliczność; FTIR; właściwości mechaniczne

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2018
• Tom: Vol. 12, no 3
• Strony: 134--142
• Opis fizyczny: Bibliogr. 22 poz., fig., tab.

Twórcy

autor

Czarnecka-Komorowska Dorota

• Poznan University of Technology, Institute of Materials Technology, Polymer Processing Division, Piotrowo 3 Street, 61-255 Poznan

autor

Wiszumirska Karolina

• Poznan University of Economics and Business, Faculty Commodity Science, Department of Commodity Science and Ecology of Industrial Products, Poznan, Poland

autor

Garbacz Tomasz

• Lublin University of Technology, Mechanical Engineering Faculty, Nadbystrzycka 38, 20-618 Lublin, Poland

Bibliografia

• 1. Banasiak A., Sterzyński T. Właściwości kompozytów polimerowych PE + talk, Composites 2002, 2, 2.
• 2. Bula K., Knitter M., Properties of high-density polyethylene reinforced with pine-wood fillers, Drewno 2016, 59, 197.
• 3. Czarnecka-Komorowska D., Ciesielska D. Wpływ liczby obiegów na właściwości recyklatów polimerowych. Inżynieria i Aparatura Chemiczna 2005, 44, 3, 16-17.
• 4. Czarnecka-Komorowska D., Szostak M., Kujawa N., Kompozyty na bazie odpadów poliolefin napełnianych popiołami lotnymi, Inż. Ap. Chem. 2010, 49, 5, 31-32.
• 5. Fisher J. M. Handbook of molded part shrinkage and warpage. Plastic Design Library, William Andrew Inc., Norwich 2003.
• 6. Garbacz T. Structure and properties of cellular thin-walled cable coatings. Polimery 2012, 57, 11- 12, 91-94.
• 7. Garbacz T., Palutkiewicz, P. Geometrical properties of polymer films produced in blown molding extrusion process. Przetwórstwo Tworzyw 2016, 22, 3, 171, 116-125.
• 8. Jachowicz T., Godlewska A. Skurcz przetwórczy wyprasek wtryskowych napełnionych włóknem szklanym, Postępy Nauki i Techniki, 7, 2011.
• 9. Jeziórska R., Klepka T., Paukszta D. Polycarbonate/maleic anhydride grafted polyethylene/graphite composites. Polimery 2007, 294, 52.
• 10. Jumari N.F., Mohd-Yusof K. Comparison of Melt Flow Index of Propylene Polymerisation in Loop Reactors using First Principles and Artificial Neural Network Models, Chemical Engineering Transactions, 56, 2017, 163-168.
• 11. Madi N.K. Thermal and mechanical properties of injection molded recycled high density polyethylene blends with virgin isotactic polypropylene, Materials & Design 2013, 46, 435-441.
• 12. Rosato D. V., Rosato D. V., Rosato M. G.: Injection Molding Handbook. Kluwer Academic Publisher, Norwell 2000.
• 13. Saechling, Poradnik, Tworzywa sztuczne,Wyd. 5., 2007.
• 14. Savargaonkar N., Patel R., Karjala T., Salibi P., Liu L. Fundamentals of abuse performance of LLDPE/ LDPE blends in blown film applications. TAPPI Conference 2014, 2, 1092-1116.
• 15. Sikora R. Przetwórstwo tworzyw wielkocząsteczkowych. Wydawnictwo Edukacyjne. Warszawa 1993.
• 16. Sykutera D., Bieliński M. Wybrane właściwości recyklatu polipropylenowego pochodzącego z porowatych wyprasek formowanych metodą wtryskiwania, Polimery 2014, 7-8, 602.
• 17. Wunderlich B., Macromolecular Physics; Crystal nucleation, growth, annealing, Academic Press: New York, 1976.
• 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).