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Articles by Fatih MENGELOGLU
Total Records ( 2 ) for Fatih MENGELOGLU
  The mechanical properties of eucalyptus wood flours (EWF) filled recycled high density polyethylene (HDPE) composites were investigated. First thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) analysis were conducted for recycled HDPE and EWF. Later the effects of EWF and maleic anhydride grafted polyethylene (MAPE) concentrations were studied. TGA analysis revealed that EWF and recycled HDPE started degrading around 230 °C and 280 °C, respectively. Melting temperature of the recycled HDPE was around 129 °C. Mechanical property evaluation showed that the increased concentration of EWF in polymer-composites reduced the tensile, flexural, and impact strength while increased the tensile and flexural modulus. The addition of small amount of MAPE coupling agent improved the tensile and flexural strength but this increase was leveled off at higher concentrations. Impact strength of the composites was reduced by the coupling agent. This study showed that polymer-composites can be manufactured utilizing recycled HDPE and eucalyptus wood flours in the process temperature range of 130-230 °C and could provide additional income for the lumber mills and promote the recycling of HDPE.
  Ramazan KURT and Fatih MENGELOGLU
  The investigation consisted of utilizing boron compounds (BCs) as a synergist with ammonium polyphosphate (APP) in manufacturing flame retardant wood-polymer composites (WPCs). Flame retardants (FRs) at various ratios (APP, boric acid (BA), borax (BX), zinc borate and BA/BX mixtures) were used to determine the physical, mechanical, and burning rate properties of WPCs manufactured from wood flour, polypropylene, and maleic anhydride polypropylene. The results showed that the addition of FRs reduced all mechanical properties of WPCs except for impact strength. However, this reduction was lower for samples having BCs in FRs formulation. Similar burning rate results were achieved in WPCs having FRs. The combination of BA/BX with APP is thought to have overcome the negative effect of APP on strength properties through the formation of boron phosphate between APP and BA. BCs, used as the synergist, improved the mechanical and FRs performance of WPCs. This study showed that using BCs as synergists with APP has potential as a relatively inexpensive halogen-free FR alternative for the industry.
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