Structure and Properties of Maleated Linear Low-Density Polyethylene and Cellulose Acetate Butyrate Blends

✍ Scribed by Priscila M. Kosaka; Yoshio Kawano; Márcia C. A. Fantini; Denise F. S. Petri

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 315 KB
• Volume: 291
• Category: Article
• ISSN: 1438-7492
• DOI: 10.1002/mame.200500413

✦ Synopsis

Abstract

Summary: Blends of M‐LLDPE and CAB were prepared in an internal laboratory mixer with 5, 10, 20, 30, 40 and 50 wt.‐% of CAB. Structure and properties of the blends were studied by means of tensile tests, DSC, SEM, extraction with a selective solvent, Raman spectroscopy and XRD. Blends prepared with 5 and 10 wt.‐% of CAB displayed the best mechanical properties. SEM and extraction with a selective solvent followed by Raman spectroscopy showed good interfacial adhesion between CAB and M‐LLDPE. No significant change on the melting temperatures (T~m~) of the M‐LLDPE/CAB blends could be observed when compared with the T~m~ obtained for pure M‐LLDPE. XRD demonstrated that the addition of CAB has no influence on the lattice constants of M‐LLDPE, but the introduction of CAB increased the amorphous region, confirming that the miscibility occurs on the amorphous region of the polyethylene.

SEM image of the cryofracture surface of CAB‐20%.

imageSEM image of the cryofracture surface of CAB‐20%.