Morphology and mechanical properties of blends of linear low density polyethylene and poly(ethene-propene-1-butene)

✍ Scribed by A. C. Quental; M. I. Felisberti

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 661 KB
• Volume: 100
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.23518

✦ Synopsis

Abstract

Blends of linear low density polyethylene (LLDPE) and ethene‐propene‐1‐butene copolymer (t‐PP) were obtained through mechanical mixing using a single‐screw extruder with different compositions: 20, 40, 50, 60, and 80 wt % of t‐PP. For this, two types of polyethylene were used: 1‐hexene comonomer and 1‐octene comonomer based. The same blends were prepared in a batch mixer and the torque and temperature were analyzed. The torque showed a decrease with increasing t‐PP content, indicating better processability of the mixture in comparison with LLDPE. The morphology of the blends was analyzed by SEM and showed a composition dependence. The mechanical properties of the blends were evaluated by tensile tests. The results revealed that the best properties were obtained in a 20% t‐PP blend. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 1255–1261, 2006