Research Institute of Forests and Rangelands Iranian Journal of Wood and Paper Science Research 1735-0913 27 2 2012 06 21 The Effect of Lignocellulosic Material and Nanoclay on Physical, Mechanical and Morphological Properties of Wood Plastic Composite The Effect of Lignocellulosic Material and Nanoclay on Physical, Mechanical and Morphological Properties of Wood Plastic Composite 189 201 117060 10.22092/ijwpr.2012.117060 FA Mohammad Tasoji Student Amir Nourbakhsh Abolfazl Kargarfard Wood and Forest Products Science Research Division, Research Institute of Forests and Rangelands, Tehran, Iran, Hossein Hosseinkhani Wood Science & Forest Products Research Division Research Institute of Forests & Rangelands Tehran, Iran Journal Article 2018 09 11 Physical and mechanical properties wood-plastic composites produced from wheat and rice straw particles, nano-clay, polypropylene and MAPP were investigated. The amount of polypropylene and lignocellulosic materials were selected as 60 wt% and 40 wt% respectively. The Nano-clay was added in three levels 0, 2 and 4 wt% and the amount of coupling agent was fixed and set to 2 wt% for all treatments except for the control. The control samples were made from polypropylene and lignocellulosic materials with neither nanoclay nor coupling agent was used. The results showed that the tensile and flexural strengths were decreased by the addition of nanoparticles. For tensile and flexural modulus, adding 2 wt% of nanoclay led to an increase in both moduli. However there was a decrease in both moduli when 4 wt% nanoclay was added. The impact strength decreased adding nanoclay. There was a decrease in 24 hour water absorption when 2 wt% of nanoclay was added but an increase was observed in 4 wt% of nanoclay level. According to the mechanical and physical properties of all the treatments, the samples made of rice straw showed better results compare to wheat straw samples due to their high amount of silica and its compatibility with nanoclay.  SEM test was performed. Physical and mechanical properties wood-plastic composites produced from wheat and rice straw particles, nano-clay, polypropylene and MAPP were investigated. The amount of polypropylene and lignocellulosic materials were selected as 60 wt% and 40 wt% respectively. The Nano-clay was added in three levels 0, 2 and 4 wt% and the amount of coupling agent was fixed and set to 2 wt% for all treatments except for the control. The control samples were made from polypropylene and lignocellulosic materials with neither nanoclay nor coupling agent was used. The results showed that the tensile and flexural strengths were decreased by the addition of nanoparticles. For tensile and flexural modulus, adding 2 wt% of nanoclay led to an increase in both moduli. However there was a decrease in both moduli when 4 wt% nanoclay was added. The impact strength decreased adding nanoclay. There was a decrease in 24 hour water absorption when 2 wt% of nanoclay was added but an increase was observed in 4 wt% of nanoclay level. According to the mechanical and physical properties of all the treatments, the samples made of rice straw showed better results compare to wheat straw samples due to their high amount of silica and its compatibility with nanoclay.  SEM test was performed. https://ijwpr.areeo.ac.ir/article_117060_8bbfc25bf0b6d2ca737a0d81c4f9d6a8.pdf