Insect damaged wood as a source of reinforcing filler for thermoplastic composites
MADERAS : Ciencia y Tecnología
In this study, wood polymer composites were manufactured using insect damaged Eastern Black Sea Fir (A. Nordmanniana) wood as filler. The effects of wood type (sound vs insect damaged) and presence of coupling agent (0% vs 3%) on the flexural, tensile, impact, thermal and morphological properties of the wood polymer composites were investigated. The mechanical property values of the wood polymer composites specimens decreased when insect damaged wood was used as filler than sound wood, except
... ound wood, except for the impact strength values. Flexural, tensile and impact strength values, insect damaged wood filled with coupling agent composites provided higher values compared to sound wood filled without coupling agent composites. However, addition of maleic anhydride-graftedpolyethylene coupling agent into polymeric matrix improved both sound and insect damaged filled composite properties. Thermogravimetric analysis analysis showed two main decomposition peaks for polymer composites. Compared to unfilled high-density polyethylene, addition of both sound and insect damaged wood reduced decomposition peak but increased the residue due to the charring of the wood. The results of differential scanning calorimeter analysis showed that addition of sound or insect damaged wood in polymer matrix increase the crystallinity compared the unfilled high-density polyethylene due to the nucleating effect of the filler. Among the composite maleic anhydride-graftedpolyethylene modified composites provided higher crystallinity than unmodified ones. Universidad del B í o -B í o Maderas. Ciencia y tecnología 19(1): 75 -86, 2017 Ashori, A. 2008. Wood-plastic composites as promising green-composites for automotive industries. Bioresources Technology 99:4661-4667. Ateşoğlu, A.; Tunay, M.; Kaygın, T.A.; Yıldız, Y.; Kavaklı, Z. 2014. Analysis and query of the damages resulted from fir bark beetle in gıs environment within forests of Zonguldak-Ulus forestry department. 2 nd Symp of Turkey Forest Ent and Path Symp Proceed 157-164. Ayrilmis, N., Buyuksari, U., Dundar, T. 2010. Waste pine cones as a source of reinforcing fillers for thermoplastic composites. J Appl Polym Sci 117:2324-2330. Bledzki, A.K.; Gassan, K. 1999. Composites reinforced with cellulose based fibres. Progress in Polymer Science 24:221-274. Chen, R.S.; Ghani, M.H.A.; Ahmad, S.; Salleh, M.N.; Tarawneh, M.A. 2015. Rice husk flour biocomposites based on recycled high-density polyethylene/polyethylene terephthalate blend:effect of high filler loading on physical, mechanical and thermal properties. Journal of Composites Materials 49(10):1241-1253. Clemons, C. 2002. Wood-plastic composites in the United States: the interfacing of two industries. Forest Products Journal 52:10-18. Deka, B.K.; Maji, T.K. 2010. Effect of coupling agent and nanoclay on properties of HDPE, LDPE, PP, PVC blend and Phargamites karka nanocomposite. Composites Science and Technology 70: 1755-1761. Jeske, H.; Schirp, A.; Cornelius, F. 2012. Development of a thermogravimetric analysis (TGA) method for quantitative analysis of wood flour and polypropylene in wood plastic composites (WPC). Thermochimica Acta 543:165-171. Kaymakci, A.; Ayrilmis, N. 2014. Investigation of correlation between Brinell hardness and tensile strength of wood plastic composites. Composites: Part B 58:582-585. Klyosov, A.A. 2007. Wood-Plastic Composites. John Wiley & Sons, Hoboken, NJ, 702p. Kordkheili, H.Y.; Farsi, M.; Rezazadeh, Z. 2013. Physical, mechanical and morphological properties of polymer composites manufactured from carbon nanotubes and wood flour. Composites: Part B 44:750-755.