Binary blends of EVA and metallocene-catalyzed ethylene-α-olefin copolymers and their film properties

✍ Scribed by Marianna Kontopoulou; Leo C. Huang; Jennifer A. Lee

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 196 KB
• Volume: 22
• Category: Article
• ISSN: 0730-6679
• DOI: 10.1002/adv.10049

✦ Synopsis

Abstract

Blends of Ethylene‐Vinyl Acetate (EVA) copolymer with a metallocene (single‐site type) catalyzed elastomeric ethylene‐α‐olefin copolymer have been investigated, with a focus on film applications. These blends were found to be immiscible in the melt and solid state, but mechanically compatible. EVA rich blends had a coarser morphology and showed more pronounced shear thinning and elastic behavior, suggesting better processability during the extrusion film blowing process. Ethylene‐α‐olefin copolymer rich blends displayed finer morphologies, better tensile, heat seal, and optical properties and less extrudate swell. © 2003 Wiley Periodicals, Inc. Adv Polym Techn 22: 209–217, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/adv.10049