Effect of striation thickness distribution on the course of an unpremixed polymerization

✍ Scribed by Steven D. Fields; Julio M. Ottino

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 571 KB
• Volume: 42
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(87)80008-8

✦ Synopsis

A lamellar model is used to evaluate the effects of striation thickness distribution on the behaviour of an unpremixed three wmponent random block copolymerization. A Iumped competitive-parallel kinetic scheme is used to describe the polymerization, and the diffusion-reaction process is solved over a periodic set of striations. The results indicate that using an average striation thickness to describe a reacting system may greatly overestimate the conversion, especially if the striation thickness distribution is wide. Lxge regions of unreacted monomers may remain isolated at long times, even for a system which is macroscopically stoichiometric.