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Nanoclay/Polypropylene Composite Monofilament Processing and Properties Using Twin and Single Screw Extruders

The structure and properties of nanoclay/polypropylene composite monofilaments were characterized using scanning electron microscopy, thermal gravimetric analyzer, differential scanning calorimeter, and Instron universal testing machine. Twin and single screw extruders were used to produce composite monofilaments with different weight percentage and types of nanoclays and compatabilizers. Final properties of composite monofilaments were affected by the amount of nanoclay. The tensile strength values decreased compared to the pure polypropylene monofilaments for all composite samples. There was not a significant change at melting point; however, decomposition temperature of composite polypropylene monofilaments increased about 10–18% compared to pure polypropylene monofilaments.