The Change of Mechanical Properties of Acorn Powder Reinforced Polystrene and Polyoxymethylene due to Gamma Radiation

In the present study, the effects of gamma radiation on the mechanical properties of acorn powder reinforced polystyrene (PS) and polyoxymethylene (POM) were investigated. Different amounts of acorn powder reinforced PS and POM samples were produced by using a plastic injection machine and these samples were exposed to 45 kGry gamma irradiation. Subsequently, the test samples were examined for the changes in their tensile, three-point bending and Izod impact strengths and the effect of gamma irradiation on the samples was established through comparing the findings with the pre-radiation state. With the increasing amount of acorn powder, the tensile strength of acorn powder reinforced PS and POM materials decreased. In contrast to the tensile strength, the bending strength of the samples increased with the increasing amount of filler material. In addition, an increase in the mechanical properties such as tensile and bending strength of materials exposed to gamma radiation has occurred.

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[1]Kısmet Y. 2015. Kurutulmuş Kolza Bitkisinin Dolgu Malzemesi Olarak Alçak Yoğunluklu Polietilenin Mekanik Özelliklerine, Yoğunluğuna ve Su Emme Kapasitesine Etkileri, Journal of Polytechnic, Vol. 18 No. 4, pp.203-209.

[2]Amer H.A. 2011. Raps, Untersuchungen zum Materialverhalten von Rapsstroh-Polypropylen Compounds, PhD Thesis, Berlin.

[3]Nawang R., Danjaji I.D., Ishiaku U.S., Ismail, H. 2001. Machanical proporties of sago starch-filled linear low density polyethylene (LLDPE) composites, Polymer Testing,Vol. 20, No.2, pp.167-172.

[4]Michaeli W. 2006. Verarbeitungsverfahren für die Kunststoffe, Einführung in die Kunststoffverarbeitung, 5nd ed, Wien,

[5]Kijenska M., Kowalska E., Palys B., Ryczkowski J.2010. Degradability of composites of low density polyethylene/polypropylene blends filler with rape straw, Polymer Degradation and Stability,Vol.95,No. 4, pp. 536-542.

[6]Micusik M., Omastova M., Nogellova Z., Fedorko P., Olejinkova K., Trchova M., Chodak I. 2006. Effect of crosslinking on the properties of composites based on LDPE and conducting organicfiller,European Polymer Jaurnal,Vol. 42 No. 10, pp.2379-2388.

[7]Ravve A. 2000. Principles of Polymer Chemistry. 2nd ed. New York, USA, Springer.

[8]Osman M.A., Atallah A., Suter U.W.2004. Influence of excessive filler coating on the tensile properties of LDPE-calcium carbonate composites,Polymer, Vol. 45No.4, pp.1177-1183.

[9]Gürü M., Akyüz Y., Akın E.2005.Mermer tozu/polyester kompozitlerde dolgu oranının mekanik özelliklere etkileri,Politeknik, Vol. 8, No.3, pp. 271-274.

[10]Kaiser W. 2006. Polyolefine, Kunststoffchemie für Ingenieure. Carl Hanser Verlag München Wien.

[11]Stoeckhert K., Woebcken W. 1998. Kunststoffen, Kunststoff-Lexikon. 9nd ed. Wien.

[12]Zou P., Xiong H., Tang S. 2008. Natural weathering of rape straw flour (RSF)/HDPE and nano-SiO2/RSF/HDPE composites,Carbohydrate Polymers, Vol.73, No.3, pp.378-383.

[13]Detlef G. 2006. Füllstoffe, Vincentz Network, Hannover,

[14]Juhasz A.J., Best S. M., Brooks R., Kawashita M., Miyata N., Kokubo T., Nakamura T., Bonfield W. 2004. Mechanical properties of glass-ceramic A-W-polyethylene composites: effect of filler content and particle size,Biomaterials, Vol.25,No.6, pp.949-955.

[15]Luo X., Li J., Feng J., Xie S., Lin X. 2013. Evaluation of distillers grains as fillers for low density polyethylene: mechanical, reological and thermal characterization,Composites Science and Technology, Vol. 89 13, pp.175-179.

[16]Deng Y., Li N., Wang Y., Zhang Z., Dang Y., Liang J. 2010. Enhanced dielectric properties of low density polyethylene with bismuth sulfide used as inorganic filler, Materials Letters, Vol. 64, No. 4, pp.528-530.

[17]Olguner G., Özer A.Y. 2000. Radyasyonla sterilizasyon II: İlaçların radyasyonla sterilizasyonu, Hacettepe Üniversitesi Ankara, Vol. 25, pp.53-73.

[18]Naki N. 2003. Kozmetik ürünler ve kozmetik ürün hammadderlerinin gama radyasyonla dekontaminasyonu/sterilizasyonu üzerine çalışmalar. Yüksek Lisans Tezi, Hacettepe