Abstract
Blends of Renewable Polymer (RP) and thermoplastic polyethylene (LDPE and HDPE) may contribute to make recycling more economically attractive. In this study, the monomer is mixed with flexible isocynate as a crosslinker, these mixture is called Renewable Polymer. Renewable polymers are mixed in a Low-density polyethylene (LDPE) and High-density polyethylene (HDPE) with a ratio of 5%, 10%, 15%, 20%, 25% and 30%. The aim of this work to make LDPE/RP and HDPE/RP blends injected via injection molding and to evaluate their mechanical properties via tensile test. Accelerated weathering test up for 500 hours, 1000 hours, 1500 hours, 2000 hours, 2500 hours and 3000 hours. The blends yielded tensile strength and maximum elongation at break curves very dependent on their composition, especially regarding the presence of necking. The tensile strength increase at 500 hours, while maximum elongation at break were found to decreased with increase of UV irradiation hours. In conclusion, RP content and UV irradiation time play significant roles in controlling mechanical properties of the RP-blended with LDPE and HDPE synthetic polymer, thus providing the opportunity to modulate polymer properties.
Highlights
As the economy achieves global status, many factors regarding the competitiveness of a nation come under investigation
Upon UV irradiation exposed for each hour from 500 hours until 3000 hour the tensile strength decreased with addition of renewable polymer (RP) blends
The characterization results indicate that the variations of renewable polymer (RP) content and UV irradiation are effective means to modulate the polymer’s mechanical properties
Summary
As the economy achieves global status, many factors regarding the competitiveness of a nation come under investigation. Advantages of the mechanical recycling of polymers include reduction of oil and energy consumption compared with the synthesis of virgin polymers, reduced disposal of plastic waste in municipal garbage and generation of employment and income. Recycling of municipal plastic waste is often an arduous task due to the fact that is material is usually a mixture of several polymer, which makes processing more difficult and limits the number of potential application [1]. Waste vegetable oils which represent a major potential source of chemicals have been utilized as an alternative feedstock for sustainable monomers. The evaluation of tensile properties of LDPE/RP and HDPE/RP blends was carried out to investigate the composition range for better mechanical performance and to define the impact of UV irradiated exposure
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