• Slide 1

    Recycling Study

Study of recycled plastic aluminates relative to environmental physical stresses as barrier material

This study investigated the capability of recycled plastic aluminates (RPAs) against environmental stresses. These environmental physical stresses of concern are: water, leachate and gas vapour permeation; thermal conductivity, and environmental stress cracking (ESC). RPAs possess properties potential as environmental protection material. The permeation properties with respect to water, gas, leachate, as well as thermal insulation and ESC, that would aid in concluding that RPAs as a barrier material has not been investigated. Hence, this study was carried out with the objective to investigate the above mentioned properties. Flexible plastic aluminium laminate trimmings (FPALTs) and variable weight percentages of organoclay (OC) were formulated, processed, characterized and examined. Methods of examination followed those procedures of American Society for Testing and Materials and International Standards Organization. Fourier Transformed Infrared (FTIR) approach was used for the investigation of ESC resistance. Results showed that impregnation of OC improved the water vapour permeability and thermal insulation property. RPA with 10% OC is the best performing RPAs for thermal insulation. All RPAs batches are considered water and leachate vapour barrier, gas vapour retarder, and moderate thermal insulator. FTIR showed that all pristine RPAs, i.e., regardless of thickness and FPALT particle size, are ESC resistant. With the above mentioned results of the study, it was concluded that RPAs are indeed a barrier and moderate insulator material that would have potential economic value for public consumption. However, it is recommended to conduct further investigation to fully understand the effects of OC concentration in reduced permeability of RPAs. Also, detailed study on economic related analysis and risk assessment is necessary to ensure environmental and public health safety.