Investigation on the uniformity of high-density polyethylene/wood fiber composites in a twin-screw extruder

2009 ◽  
Vol 113 (4) ◽  
pp. 2081-2089 ◽  
Author(s):  
Jingjing Zhang ◽  
Chul B. Park ◽  
Ghaus M. Rizvi ◽  
Hanxiong Huang ◽  
Qingping Guo
Keyword(s):  
High Density Polyethylene ◽  
Wood Fiber ◽  
Fiber Composites ◽  
High Density ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw

scholarly journals Properties of Raphia Palm Interspersed Fibre Filled High Density Polyethylene

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Henry C. Obasi
Keyword(s):  
Particle Size ◽  
Young’S Modulus ◽  
High Density Polyethylene ◽  
Young's Modulus ◽  
High Density ◽  
Screw Extruder ◽  
Elongation At Break ◽  
Twin Screw ◽  
Partial Degradation ◽  
Different Levels

Blends of nonbiodegradable and biodegradable polymers can promote a reduction in the volume of plastic waste when they undergo partial degradation. In this study, properties of raphia palm interspersed fibre (RPIF) filled high density polyethylene (HDPE) have been investigated at different levels of filler loadings, 0 to 60 wt.%. Maleic anhydride-graft polyethylene was used as a compatibilizer. Raphia palm interspersed fibre was prepared by grinding and sieved to a particle size of 150 µm. HDPE blends were prepared in a corotating twin screw extruder. Results showed that the tensile strength and elongation at break of the blends decreased with increase in RPI loadings and addition of MA-g-PE was found to improve these properties. However, the Young’s modulus increased with increase in the amount of RPI into HDPE and compatibilization further increased the Young’s modulus. The water absorption indices and weight loss for RPI/HDPE composites were found to increase with RPI loadings but were decreased on addition of MA-g-PE.

Effect of Salicylic Acid / Ethanol Treatment on Tensile Properties and Morphology Analysis of Recycled High Density Polyethylene / Wood Fiber Composites

2014 ◽  
Vol 554 ◽  
pp. 17-21
Author(s):  
M.P.M. Hanif ◽  
A.G. Supri ◽  
Z. Firuz
Keyword(s):  
Salicylic Acid ◽  
Tensile Properties ◽  
High Density Polyethylene ◽  
Wood Fiber ◽  
Fiber Composites ◽  
High Density ◽  
Rotor Speed ◽  
Elongation At Break ◽  
Morphology Analysis ◽  
Lower Elongation

The effect of salicylic acid as a coupling agent on the tensile properties, and morphology analysis of recycled high density polyethylene/wood fiber (rHDPE/WF) composites were studied. Both composites rHDPE/WF and rHDPE/WFM (treatment with salicylic acid) were prepared using Brabender Plasticorder at temperature of 160°C and rotor speed of 50 rpm. The result indicated that rHDPE/WFM composites with salicylic acid exhibit higher tensile strength and modulus of elasticity but lower elongation at break than rHDPE/WF composites. The SEM micrographs showed that the wood fiber was more widely dispersed in the rHDPE matrix with addition of ethyl salicylate than rHDPE/WFM.

Preparation of Polypropylene/Sisal Fiber Composites and Study on the Fiber Orientation

2014 ◽  
Vol 989-994 ◽  
pp. 581-586
Author(s):  
Rong Yuan Chen ◽  
Zan Huang ◽  
Wei Zou ◽  
Hai Chen Zhang ◽  
Jin Ping Qu
Keyword(s):  
Tensile Properties ◽  
Fiber Orientation ◽  
Extrusion Direction ◽  
Tensile Tests ◽  
Fiber Composites ◽  
Sisal Fiber ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw ◽  
Better Than

The polypropylene/sisal fiber composites were prepared by twin screw extruder and vane extruder, respectively. The tensile test specimens perpendicular to the extrusion direction and parallel to the extrusion direction were prepared from the extruded composites, respectively. SEM observation showed that fiber orientation of sisal fiber in the composites was not obvious when the content of sisal fiber not more than 15wt%. When the content of sisal fiber was 15wt%, the ability to orientate of sisal fiber in the composite prepared by vane extruder was better than that of in the composite prepared by twin screw extruder, which the fiber orientation of sisal fiber was obvious along the extrusion direction in the composite. Tensile tests showed that the tensile properties of the composite parallel to the extrusion direction with 15wt% sisal fiber prepared by vane extruder were the best compared with other composites in this work. The results illustrated that the orientation of sisal fiber in the composites was beneficial to the improvement of the tensile properties of the composites.

Melt rheological behaviour of high-density polyethylene/montmorillonite nanocomposites

2021 ◽  
pp. 096739112110118
Author(s):  
Vishwa Pratap Singh ◽  
Ravi Kumar ◽  
Ashwith ◽  
Priyanka Singh ◽  
Satyajit Samanta ◽  
...  
Keyword(s):  
High Density Polyethylene ◽  
Rheological Behaviour ◽  
Filler Loading ◽  
High Density ◽  
Melt Blending ◽  
Screw Extruder ◽  
Newtonian Flow ◽  
Opposite Trend ◽  
Twin Screw ◽  
Power Law Index

The present study explains the preparation of high-density polyethylene (HDPE)-based nanocomposites containing different amounts of montmorillonite (MMT) nanoclay (1–10 wt%). These nanocomposites were obtained by melt blending in a co-rotating twin screw extruder in absence and presence of a compatibiliser (HDPE-g-MA). The melt rheological behaviour of HDPE/MMT nanocomposites has been investigated by using capillary rheometer at 190°C, 200°C and 210°C over the shear rate range of 50–1000 s−1. The melt viscosity of HDPE increased marginally at 10 wt% filler loading while addition of compatibiliser to HDPE/MMT composites did not show any significant effect on viscosity. All nanocomposites showed shear thinning and non-Newtonian flow behaviour. The power law index reduced with increase in MMT concentration and increased with increase in temperature while opposite trend was observed for the consistency index. The activation energy was highest for the nanocomposites containing 10 wt% MMT and decreased upon addition of coupling agent.

EFFECT OF PHTHALIC ANHYDRIDE ON TENSILE PROPERTIES AND THERMAL STABILITY OF RECYCLED HIGH DENSITY POLYETHYLENE / WOOD FIBER COMPOSITES

2015 ◽  
Vol 74 (10) ◽  
Author(s):  
M. P. M. Hanif ◽  
Supri A. G. ◽  
Firuz Zainuddin
Keyword(s):  
Thermal Stability ◽  
Tensile Strength ◽  
Tensile Properties ◽  
Phthalic Anhydride ◽  
High Density Polyethylene ◽  
Wood Fiber ◽  
Fiber Composites ◽  
High Density ◽  
Rotor Speed ◽  
Thermal Stability Of

The effect of phthalic anhydride as a coupling agent on the tensile properties and thermal stability of recycled high density polyethylene/wood fiber (rHDPE/WF) composites were studied.  Both composites rHDPE/WF and rHDPE/WF/PAH (modified with phthalic anhydride) were prepared using Brabender Plasticorder at a temperature of 160°C and rotor speed of 50 rpm. The result indicated that rHDPE/WF/PAH composites exhibit higher tensile strength and modulus of elasticity than rHDPE/WF composites. It was also found that the addition of phthalic anhydride offers better thermal stability in rHDPE/WF/PAH composites than that of rHDPE/WF composites.

Effect of Wood Fiber Treated with Salicylic Acid/Ethanol on Tensile Properties and Thermal Stability of Recycled High Density Polyethylene/Wood Fiber Composites

2014 ◽  
Vol 679 ◽  
pp. 132-136 ◽  
Author(s):  
M.P.M. Hanif ◽  
A.G. Supri ◽  
Z. Firuz
Keyword(s):  
Thermal Stability ◽  
Salicylic Acid ◽  
Tensile Properties ◽  
High Density Polyethylene ◽  
Wood Fiber ◽  
Fiber Composites ◽  
High Density ◽  
Elongation At Break ◽  
Lower Elongation ◽  
Thermal Stability Of

The effect of salicylic acid/ethanol as a coupling agent on the tensile properties and thermal stability of recycled high density polyethylene/wood fiber (rHDPE/WF) composites were studied. Both composites rHDPE/WF and rHDPE/WFM (treatment with salicylic acid) were prepared using Brabender Plasticorder at temperature of 160°C and rotor speed of 50 rpm. The result indicated that rHDPE/WFM composites with salicylic acid exhibit higher tensile strength and modulus of elasticity and lower elongation at break than rHDPE/WF composites. It was also found that the addition of salicylic acid/ethanol shows better thermal stability in rHDPE/WFM composites than rHDPE/WF composites.

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