Mechanical, thermal and morphological properties of environmentally degradable ABS and poly(vinyl alcohol) blends

✍ Scribed by B. Ramaraj

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 187 KB
• Volume: 106
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.25170

✦ Synopsis

Abstract

Blends of acrylonitrile–butadiene–styrene (ABS) with 5, 10, 15, and 20 wt % of poly(vinyl alcohol) (PV) were prepared by extruding in a corotating twin screw extruder. The ABS material was blended with PVA with the objective to enhance the degradability of ABS. The extrudate strands were cut into pellets and injection molded to make test specimens. These ABS/PVA blend specimens were tested for physicomechanical properties like tensile strength, elongation, modulus of elasticity, abrasion resistance, density, and water absorption, These blends were further characterized by melt flow Index, differential scanning calorimetry, thermogravimetry analysis, and scanning electron microscopy. The morphological analysis reveals the existence of PVA domains in the ABS matrix. Differential scanning calorimetry thermograms indicates the chemical interaction between ABS and PVA domains. The prepared blends show enhanced environmental and thermal degradation. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007