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Mechanical and Morphological Properties of HDPE: PP and LDPE: PP Polymer Blend Composites Reinforced with TiO2 particles
الخواصالمیكانیكیة و المجھریة لمتراكبات الخلائط البولیمریة HDPE: PP و LDPE: PP المقواة بدقائق اوكسید التیتانیوم

Authors: Sihama I. Salih --- Abdullkhaliq F.hamood --- Alyaa H. Abdalsalam
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2013 Volume: 31 Issue: 12 Part (A) Engineering Pages: 2211-2227
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

In this research two groups of polymer blends have been prepared First group included (High density polyethylene (HDPE): Polypropylene (PP))While the Second group(included Low density polyethylene (LDPE): Polypropylene (PP)) both groups prepared withpolypropylene of (20% and 80%). From the results of tensile test for the prepared blends it has been showed that the optimum blending ratio was (20%LDPE:80%PP and 20%HDPE:80%PP) which thenreinforced with (2, 5 and 8wt%) oftitanium dioxide (TiO2), particle size (0.421μm). Titaniaparticles weremechanically mixed with the polymers prior tomelt mixing for better dispersion.Polymerblend composites were obtained by using single screw extruder. Results showed that mechanical properties increased as titania content increased except elongation.Furthermore the result recorded highest values ofimpact strength and fracture toughness at2%wt TiO2which is 312 Mpa and 572.8Mparespectively,for the polymer blend (20%HDPE: 80%PP) composite and for the polymer blend (20%LDPE: 80%PP) composites the impact strength and fracture toughness are 262.5Mpa and 468 Mpa respectively.The mechanical properties values of 20%HDPE: 80%PP is higher than 20%LDPE: 80%PP polymer blendcomposites. Scanningelectron microscopy (SEM) imagesshowed that there isbonding developed between TiO2 and polymer blends in some regions.

Keywords

Polymer blend --- TiO2 --- HDPE --- PP --- composite --- Mechanical properties

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