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Glass beads were mixed into isotactic polypropylene by single and twin-screw extruders and the effect of glass bead content, bead size and preparation route on the melt flow properties of the composites were evaluated by melt flow rate (MFR), capillary rheometer and torque rheometer tests. The results indicated that the filler content and processing route showed greater effect than bead size. The...
The essential work of fracture (EWF) method was employed to determine the fracture behavior of calcium carbonate (CaCO 3 ) filled polypropylene (PP) composites with and without polypropylene grafted with maleic anhydride (PP-g-MA) incorporated. The effect of composition on the EWF parameters of the composites was particularly investigated. It was found that the plane-stress EWF approach worked...
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