MECHANICAL, DIFFUSION AND DEGRADATION PROPERTIES OF BLENDS OF CELLULOSE AND RECYCLED LOW DENSITY POLYETHYLENE

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dc.contributor.author Were, G
dc.date.accessioned 2017-05-19T11:33:33Z
dc.date.available 2017-05-19T11:33:33Z
dc.date.issued 2017-05-19
dc.identifier.isbn 9966 923 28
dc.identifier.uri http://journals.jkuat.ac.ke/index.php/jscp/article/view/1127
dc.identifier.uri http://hdl.handle.net/123456789/3106
dc.description.abstract This paper discusses the effect of Cellulose (CEL) concentration on mechanical, diffusion and degradation properties of Recycled Low Density Polyethylene (RHDPE). Injection molded blends of RLDPE and CEL were prepared in percentage ratios of 100:0, 95:5, 90:10, 85:15 and 80:20. Dynamic mechanical analysis, creep, diffusion, thermal degradation and biodegradation measurements were carried out on the molded samples. Three relaxation processes namely; α, β1 and β2 were observed. The α process is assigned to large scale chain motion where as β1 and β2 suggest lamellae shear of two different thicknesses. The intensities of the processes decreased with increase in cellulose loading whereas the temperature shifts were not observed. Creep strain increased moderately with increasing loading intakes while recovery decreased. Deformation behavior follows WLF law suggesting that free volume plays a crucial role. Water uptake was found to increase with cellulose loading. Weight change profiles for the blends at room temperature indicated that the diffusion is Fickian. Diffusion coefficient increased with CEL intake. Thermo-gravimetric analysis (TGA) showed that the decomposition trend shifted from one stage to two stage with increasing CEL intake. The models of analysis for DMA and Creep data were VFT and WLF respectively. Thermal degradation data was analyzed using Arrhenius laws while Fick’s laws were used in diffusion measurements. Energy is distributed through the three transitions on impact. Creep increases with CEL intake whereas recovery is improved. Diffusivity increases while thermal stability as well as toxic byproducts decreased with CEL intake. Degradation was enhanced with CEL intake thus the composites can be adopted by policy makers to minimize environmental pollution. en_US
dc.description.sponsorship JKUAT en_US
dc.language.iso en en_US
dc.publisher JKUAT en_US
dc.relation.ispartofseries Proceedings of the 2013 JKUAT Scientific Technological and Industrialization Conference;14-15th November 2013
dc.subject Recycled Low Density Polyethylene (RLDPE) en_US
dc.subject cellulose (CEL) en_US
dc.subject Thermo-gravimetric analysis (TGA) en_US
dc.subject JKUAT en_US
dc.subject Kenya en_US
dc.subject William Landel Ferry (WLF) en_US
dc.subject Dynamic Mechanical Analysis (DMA) en_US
dc.title MECHANICAL, DIFFUSION AND DEGRADATION PROPERTIES OF BLENDS OF CELLULOSE AND RECYCLED LOW DENSITY POLYETHYLENE en_US
dc.type Article en_US


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