Naslov
Weathering of High Density Polyethylene-Wood Plastic Composites

Autori
Kratofil Krehula, Ljerka ; Katančić, Zvonimir ; Ptiček Siročić, Anita ; Hrnjak-Murgić, Zlata

Izvornik
Journal of wood chemistry and technology (0277-3813) 34 (2014), 1; 39-54

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
polyethylene ; wood-plastic composite ; degradation ; weathering ; UV stabilizer

Sažetak
Due to widespread use of wood-plastic composites, high density polyethylene-wood flour composites (HDPE/WF) were studied in order to determine their stability in different application conditions. UV degradation and periodic absorption/desorption of moisture cause damaging changes to material during WPCs exterior application so it is needed to ensure WPCs durability against atmospheric influences. Samples were characterized by FTIR spectroscopy and scanning electron microscopy (SEM) in order to study the degradation after simulated weathering. The degree of water absorption was also determined. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used for determination of composites’ thermal properties. Results show that the stability of the HDPE/WF composites to UV treatment highly depends on stabilizer content and its dispersion in polymer matrix. Incompatibility of HDPE and wood particles is a major problem which should be solved to achieve good durability and satisfying properties in use.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

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