Effect of filler loading and coconut oil coupling agent on properties of low-density polyethylene and palm kernel shell eco-composites

2014 ◽  
Vol 22 (3) ◽  
pp. 200-205 ◽  
Author(s):  
Salmah Husseinsyah ◽  
Koay Seong Chun ◽  
Akmal Hadi ◽  
Romisuhani Ahmad
2012 ◽  
Vol 626 ◽  
pp. 615-619 ◽  
Author(s):  
B.Y. Lim ◽  
Salmah Husseinsyah ◽  
Pei Leng Teh

The rheological properties of the low density polyethylene (LDPE)/palm kernel shell (PKS) composites were studied by using a melt flow indexer. The silane treated and untreated composites were investigated. Both of the composites were further varied by amount of filler loading from 10 to 40 php. The testing temperature of composites varied from 180 to 210 °. It was found out that the MFI values of the composites increased with temperature but decreased with a rise of filler loading. The treated LDPE/PKS composites exhibited lower MFI values compared to untreated composites, which indicated the increase of viscosity. Thus, a better adhesion between the LDPE matrix and PKS was established. The effect of temperature on the viscosity of LDPE/PKS composites was found to obey the Arrhenius equation. The results showed that the activation energy of the composites increased with the increase of filler loading. However, at similar filler loading, the silane treated composites showed lower activation energy compared to untreated composites, leading to the reduction of their temperature sensitivity.


Author(s):  
F. Inegbedion ◽  
L. C. Igbonazobi ◽  
A. O. Imasuen ◽  
C. O. Inetianbor

All over the world, polyethylene wastes has been found littered on the streets of most communities and states. Palm kernel shell (agricultural waste) constitutes dirt and environmental pollution. The aim of this research was to study the potentials of palm kernel shell (PKS) filler as reinforcement for low density polyethylene (LDPE) waste. LDPE-Palm kernel shell composites of varying ratio (100:0, 90:10, 80:20, 70:30, 60:40, 50:50) of LDPE to PKS respectively were produced using the compression moulding technique. Mechanical properties such as water absorption, hardness, young’s modulus and tensile strength of the composites were found to increase with increasing PKS loading. The results showed that composites containing 40% of PKS gave the highest tensile strength corresponding to 18.42MPa. The results also indicated that the composites with 50% filler loading gave the highest hardness of 84.25A and water absorption rate which stood at 3.1%. The elongation at break was found to decrease with increasing filler content. The scanning electron micrograph (SEM) obtained revealed that the composites with 20% and 50% palm kernel shell had voids and surface cracks.


2014 ◽  
Vol 803 ◽  
pp. 250-254
Author(s):  
Murad Salem Mohamed Omar ◽  
Hui Lin Ong ◽  
Hazizan Md Akil ◽  
N.A. Nik Nur Azza ◽  
M. Muhammad Safwan ◽  
...  

Effects of 3-aminopropyltriethoxysilane (APTES) as coupling agent on thermal properties of Polypropylene/Palm Kernal Shell (PP/PKS) biocomposites were studied. PKS with different filler loading (5, 10, 15, 20 and 25 wt %) were added into polypropylene matrix and were compounded using hot melt blending method. Thermogravimetric Analysis (TGA) result shows a higher thermal stability of amino silane modified fillers (10% filler loading). Percentage of crystallinity for PP/PKS composites increased after adding amino silane due to better dispersion of filler and the ability of coupling agent to enhance compatibility between PKS and polypropylene hence it increases the nucleation site.


2020 ◽  
Vol 15 (3) ◽  
pp. 44-49
Author(s):  
Ibiyemi A. Idowu ◽  
Olutosin O. Ilori

The study examined the effect of fillers on the mechanical properties of the recycled low density polyethylene composites under weathered condition with a view of managing the generation and disposal of plastic wastes. Discarded pure water sachets and fillers (glass and talc) were sourced and recycled. Recycled low density polyethylene (RLDPE) and preparation of RLDPE/glass, RLDPE/talc and RLDPE/glass/talc composites were carried out using a furnace at compositions of 0 – 40% in steps of 10% by weight. The mixtures were poured into hand-laid mould. The samples produced were exposed to sunlight for eight (8) weeks and their mechanical properties were studied. The results of mechanical tests revealed that tensile strength decreased with increasing filler loading while impact strength and hardness property increased marginally and considerably with increasing filler loading for all the composites respectively. The study concluded that glass and talc were able to reinforce recycled low density polyethylene under weathered condition. Keywords: Recycled Low Density Polyethylene (RLDPE); Fillers; Glass, Talc; Weathering condition; Sunlight; and Mechanical properties; Tensile strength, Impact and hardness


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