Cationic polymerization of styrene with electrochemically generated perchloric acid—II

✍ Scribed by G. Pistoia

• Publisher: Elsevier Science
• Year: 1974
• Tongue: English
• Weight: 403 KB
• Volume: 10
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(74)90119-0

✦ Synopsis

Abstniet~'rhe electroinitiated polymerization of styrene in LiCIO4-PC solutions has a living character due to the absence of termination. Marked side reactions were observed, limiting the yields. These reactions are mainly due to monomer oxidation by HCIO, and polymer degradation at the anode. They can be minimized by increasing the monomer concentration. Conversion vs time curves show an induction period, an ascending linear portion and a descending portion. Kinetic treatment limited to the ascending portions shows that the polymerization is first-order with respect to monomer and HC104 concentrations. Kp values are considerably lower than those found in HCIO4-C~H4CI 2 and in HCIO4CH2CI2, thus confirming that the influence of the solvent in these processes is not merely electrostatic.