Styrene-co-acrylonitrile resin modifications of PVC/CPE blends

✍ Scribed by Wenjun Yang; Qiye Wu; Liling Zhou; Shuying Wang

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 280 KB
• Volume: 66
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19971121)66:8<1455::aid-app5>3.0.co;2-d

✦ Synopsis

The effects of styrene-co-acrylonitrile resin (AS) on the mechanical properties, morphology, and plasticizing and rheological behaviors of poly(vinyl chloride)/ chlorinated polyethylene(PVC/CPE) blends are studied. The results show that the impact strength and the tensile strength are all increased and the plasticizing and rheological behaviors are also improved when a certain amount of AS is added into PVC/CPE blends, which are different in characteristics and regularity from plastics toughened with elastomers. It is blends of brittle-ductile transition regions (i.e., PVC/ CPE Å 100/10, 100/15) that can obviously be toughened by AS. The analysis of the morphological structure shows that AS promotes the formation of a CPE network that embeds the primary particles of PVC.