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Drvna industrija, Vol. 72 No. 3, 2021.

Original scientific paper

https://doi.org/10.5552/drvind.2021.1971

Heat-Treated Wood Reinforced High Density Polyethylene Composites

Kadir Karakuş ; Kahramanmaras Sutcu Imam University, Faculty of Forestry, Department of Forest Industrial Engineering, Kahramanmaras, Turkey
Deniz Aydemir orcid id orcid.org/0000-0002-7484-2126 ; Bartin University, Faculty of Forestry, Department of Forest Industrial Engineering, Bartin, Turkey
Gokhan Gunduz orcid id orcid.org/0000-0002-2602-2211 ; Bartin University, Faculty of Forestry, Department of Forest Industrial Engineering, Bartin, Turkey
Fatih Mengeloğlu ; Kahramanmaras Sutcu Imam University, Faculty of Forestry, Department of Forest Industrial Engineering, Kahramanmaras, Turkey

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Abstract

This study investigated the effect of untreated and heat-treated ash and black pine wood flour concentrations on the selected properties of high density polyethylene (HDPE) composites. HDPE and wood flour were used as thermoplastic matrix and filler, respectively. The blends of HDPE and wood fl our were compounded using single screw extruder and test samples were prepared through injection molding. Mechanical properties like tensile strength (TS), tensile modulus (TM), elongation at break (EatB), fl exural strength (FS), fl exural modulus (FM) and impact strength (IS) of manufactured composites were determined. Wood fl our concentrations have significantly increased density, FS, TM and FM and hardness of composites while reducing TS, EatB and IS. Heat-treated ash and black pine fl our reinforced HDPE composites had higher mechanical properties than untreated ones. Composites showed two main decomposition peaks; one coming from ash wood flour (353-370 °C) and black pine wood fl our (373-376 °C), the second one from HDPE degradation (469-490 °C). SEM images showed improved dispersion of heat-treated ash and black pine wood flour. The obtained results showed that both the untreated and heat-treated ash/black pine wood flour have an important potential in the manufacture of HDPE composites.

Keywords

HDPE; wood flour; thermal modification; heat treatment; polymer composite

Hrčak ID:

260757

URI

https://hrcak.srce.hr/260757

Publication date:

22.7.2021.

Article data in other languages: croatian

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