Effect of nanoclay contents on properties, of bagasse flour/reprocessed high density polyethylene/nanoclay composites

Abstract

The effect of nanoclay contents on the physical and mechanical properties of bagasse flour/ reprocessed high density polyethylene (rHDPE)/ nanoclay composites was investigated. The bagasse flour content was constant at 50%, the maleic anhydride content was constant at 3%, and the nanoclay (Cloisite 30B) content was set at three different levels: 0%, 2%, and 4%. The materials were mixed in a co-rotating twin-screw extruder; afterwards, the specimens were fabricated using an injection molding method. The water absorption and mechanical properties, such as flexural and tensile strength, flexural and tensile modulus, and notched impact strength, were measured. The nanoclay dispersion was examined by X-ray diffraction. The results indicated that tensile and flexural modulus increased with an increase in nanoclay content. Also By increasing the nanoclay content at 2 wt.%, the tensile and flexural strengths of the composite were increased. However, the addition of 4 wt.% nanoclay resulted in reductions of these properties. Water absorption decreased with increasing nanoclay content. The structural examination of the bagasse polymer composite with X-ray diffraction showed that the nanoclay was distributed as an intercalated structure in the polymer matrix, and the d-spacing of layers decreased with increasing nanoclay content. Scanning electron microscopy (SEM) showed that 2% nanoclay samples with lower and more uniform pores compared at 4% nanoclay samples, respectively.

Effect of weathering on physical and mechanical properties of hybrid nanocomposite based on polyethylene, woodflour and nanoclay

“…Similar observation was reported by other researchers (Candan and Akbulut 2015). Another reason for decrease in MOE could be related to the dispersion and homogeneity of the media (Samariha et al 2015). Also Figure 4 shows the drop in MOE values after 2000 h of weathering for all WPCs with and without nanoclay content, however the loss in MOE values was 10,4% for the WPCs and 9,7% and 8,5% for nanoWPCs with 2 and 4wt% nanoclay content, respectively.…”

“…The water absorption of composites decreased with incorporation of nanoclay. The higher the amount of nanoclay, the lower was the water absorption (Samariha et al 2015). Organically modified clay increases the tortuous path for water transport and as a result water diffusivity will decrease (Alexandre et al 2006).…”

Effect of Nanographene on Physical, Mechanical, and Thermal Properties and Morphology of Nanocomposite Made of Recycled High Density Polyethylene and Wood Flour

“…By increasing MFI, stronger connections are created and the particles that come out of the ground polymer are reduced. Samariha et al (2015) studied the morphology of bagasse/recycled high density polyethylene fiber composites by imaging with SEM. Micrographs showed orientation, distribution, and dispersion of reinforcers, and it was determined that presence of coupling agents improved transfer of stress between the matrix and fibers, as well as distribution and dispersion of reinforcers in recycled polyethylene matrix.…”

Effects of different nanoclay loadings on the physical and mechanical properties of Melia composita particle board

“…Ashori and Nourbakhsh (2009) observed considerable improvement in mechanical and physical properties of boards when loaded from 2 to 6 weight % to the boards furnishes. Addition of Cloisite 30B resulted in significant improvement in mechanical properties of wood polymer composites (Samariha et al, 2015). However there is report of compactness of strips having more effect on oriented strand lumber when prepared with different concentration of UF resin along with nano-silane (Taghiyari et al, 2016a).…”