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Polymer Science: Peer Review Journal

Rheological Properties of Low-Density Polyethylene/Random Copolymer- Polypropylene

Submission: March 14, 2023;Published: April 05, 2023

Volume4 Issue5
March , 2023


Low-Density Polyethylene (LDPE) was blended into random copolymer Polypropylene (PPR) to alter the rheological capacity studied in extrusion. The blending was conducted with a single-screw extruder before pelletizing. Shown are the influences of blends ratio and shear rate on the rheological behaviors by capillary at 200 ℃. As the content of LDPE in PPR/LDPE rises, the apparent viscosity of the blends gradually decreases while the Non-Newtonian index of also decreases. LDPE, PPR and their blends appear in obvious shear-thinning behavior.

Keywords:Random copolymer polypropylene (PPR); Low density polyethylene (LDPE); Viscosity; Non-Newtonian index

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