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

Steven D. Fields; Julio M. Ottino

doi:10.1016/0009-2509(87)80008-8

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

Steven D. Fields^*, Julio M. Ottino

^*Corresponding author for this work

Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

A lamellar model is used to evaluate the effects of striation thickness distribution on the behaviour of an unpremixed three component random block copolymerization. A lumped 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. Large regions of unreacted monomers may remain isolated at long times, even for a system which is macroscopically stoichiometric.

Original language	English (US)
Pages (from-to)	459-465
Number of pages	7
Journal	Chemical Engineering Science
Volume	42
Issue number	3
DOIs	https://doi.org/10.1016/0009-2509(87)80008-8
State	Published - 1987

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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abstract = "A lamellar model is used to evaluate the effects of striation thickness distribution on the behaviour of an unpremixed three component random block copolymerization. A lumped 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. Large regions of unreacted monomers may remain isolated at long times, even for a system which is macroscopically stoichiometric.",

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AU - Ottino, Julio M.

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AB - A lamellar model is used to evaluate the effects of striation thickness distribution on the behaviour of an unpremixed three component random block copolymerization. A lumped 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. Large regions of unreacted monomers may remain isolated at long times, even for a system which is macroscopically stoichiometric.

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