Template photopolymerization of methacrylic acid in water—IV. Determination of rate constants of elementary processes

✍ Scribed by Jadwiga Matuszewska-Czerwik; Stefan Poklowiński

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 238 KB
• Volume: 27
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(91)90231-c

✦ Synopsis

Initiation rate for the polymerization of methacrylic acid in water, in the absence and in the presence of polyvinylpyrrolidone as a template, have been determined by the inhibition method. A water-soluble inhibitor (2,2,6,6-tetramethyl-4-hydroxy-piperidine-l-oxyl) was used. The rate constants for template propagation (kp) and termination (kt) were calculated and compared with the corresponding constants for non-template polymerization. It was found that kp and k t in the template polymerization are lower by several orders of magnitude that those in the polymerization without template. The mechanisms of elementary processes of the template polymerization are discussed.