Impact of Microorganisms on Mechanical Properties Changes of Composite Materials with Sawdust as Organic Filler

• Autorzy: Mazur Piotr , Szuszkiewicz Jarosław

Identyfikatory

DOI

10.31648/ts.5845

• Języki publikacji: EN

Abstrakty

EN

The beginning of the XXIst century is characterized by rapid development of polymer materials, including polymer composite materials, which consist of a natural organic filler (wood flour, sawdust, cellulose fiber, flax fiber, sisal fiber) and reinforcement carrier (polymer). In case of that kind of the fillers under the influence of weathering (humidity, temperature) they might be subject to biodegradation due to effect of microorganisms, including funguses, which are responsible for degradation of natural organic fillers. In case of the low melting temperature polymers (e.g. PE-LD) the processing temperature does not entirely eliminate some of the fungal spores. The paper has presented the research results of twelve months. The development of the microorganisms in the natural conditions was examined in a pure filler (sawdust) as well as in a composite. Simultaneously, change of one of the fundamental strength properties, which is the impact strength, was being tested. For the investigated composite the PE-LD as the matrix and a sawdust mixture of pine, larch and oak were used. The sawdust formed the composite in 30% vol. The research results confirmed that in the natural conditions the microorganisms development depends on weathering which varies in the time of the year. The value of the V notch impact strength changed from 12.5 kJ/m2 for the composite in initial phase to the value of 6.7 kJ/m2 after twelve months operation, which is close to 54%.

Słowa kluczowe

EN

polymer; composite; organic filler; microorganisms; impact strength; polyethylene

• Wydawca: Wydawnictwo Uniwersytetu Warmińsko-Mazurskiego w Olsztynie
• Czasopismo: Technical Sciences / University of Warmia and Mazury in Olsztyn
• Rocznik: 2021
• Tom: nr 24(1)
• Strony: 5--11
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., zdj.

Twórcy

autor

Mazur Piotr

• Katedra Technologii Materiałów i Maszyn, Wydział Nauk Technicznych, Uniwersytet Warmińko-Mazurski, ul. Oczapowskiego 11, 10-718 Olsztyn

• https://orcid.org/0000-0002-5596-091X

autor

Szuszkiewicz Jarosław

• Katedra Technologii Materiałów i Maszyn, Wydział Nauk Technicznych, Uniwersytet Warmińko-Mazurski, ul. Oczapowskiego 11, 10-718 Olsztyn, phone: [phone]

• https://orcid.org/0000-0002-4490-3397

Bibliografia

• Barton J. 2014. Polymer composites, biocomposites and nanocomposites. Obtaining, composition, properties and fields of application. Chemik, 68(4): 280-287.
• Garbarczyk J., Paukszta D., Borysiak S. 2009. Thermoplastic polymer composites with lignocellulosic materials. Mechanics, 106(1-M): 93-97.
• Koszkul J. 1999. Polymer Materials. Wydawnictwo Politechniki Częstochowskiej, Częstochowa.
• Mańka M. 2011. Forest Trees Diseases. Powszechne Wydawnictwo Rolnicze i Leśne, Warszawa.
• Miedzianowska J., Masłowski M., Strzelec K. 2018. The natural fiber reinforced polymer composites - factors affecting the mechanical performance. Technologia i Jakość Wyrobów, 63: 45-54.
• Postawa P., Stachowiak T., Szarek A. 2010. Research of properties of wood-polymer composite using DMTA method. Kompozyty, 10(3): 266-269.
• Poszytek K. 2016. Microbial cellulose utilization. Postępy Mikrobiologii, 55(2): 132-146.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)