Abstract
AbstractPolyethylene (PE) and polycarbonate (PC) are not thermodynamically miscible, and they tend to be phase‐separated during melt‐processing, because of significant incompatibility in structures and properties. Interestingly, minerals such as CaCO3 are used in PE‐based supermarket bags for improving surface characteristics. In this study, recycled low‐density polyethylene (LDPE) and PC resins are melt‐blended at 50/50 wt%, without and with oxidized polyethylene (OPE) as a compatibilizer. A parallel experiment is conducted with 50/50 blends of virgin LDPE and PC resins. Various characteristics such as tensile, viscoelastic, melt‐flow, and phase morphology of the materials are analyzed. The 50/50 blend of recycled LDPE/PC blend shows an average tensile strength of 15 MPa, which increases to 24 MPa on the addition of 5 wt% OPE, where total recycled content is 95 wt% including 15 wt% CaCO3. Notably, the presence of CaCO3‐based filler in recycled LDPE has a profound effect in improving the mechanical performance of the materials.
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