A possible mechanism for benzene formation during the pyrolysis of poly(vinyl chloride)

✍ Scribed by V. Bellenger; L.B. Carette; E. Fontaine; J. Verdu

• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 259 KB
• Volume: 18
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(82)90165-3

✦ Synopsis

We studied the evolution of hydrogen chloride and benzene from two PVC samples differing only in molecular weight, during a slow pyrolysis experiment. It appears that the evolution rates and total amount of benzene decrease rapidly when molecular weight increases. Twenty to 30 benzene molecules are formed per initial chain-end. The proposed radical mechanism involves a cyclohexadienyl radical as intermediate and initiation from terminal I-chloro-vinyl units.