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

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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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title = "Effect of striation thickness distribution on the course of an unpremixed polymerization",

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.",

author = "Fields, {Steven D.} and Ottino, {Julio M.}",

note = "Funding Information: financial support of CUMIRP, the Center for University of Massachusetts-Industry Research on Polymers, and the donors of the Petroleum Research Fund, administered by the ACS.",

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T1 - Effect of striation thickness distribution on the course of an unpremixed polymerization

AU - Fields, Steven D.

AU - Ottino, Julio M.

N1 - Funding Information: financial support of CUMIRP, the Center for University of Massachusetts-Industry Research on Polymers, and the donors of the Petroleum Research Fund, administered by the ACS.

PY - 1987

Y1 - 1987

N2 - 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.

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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JO - Chemical Engineering Science

JF - Chemical Engineering Science

SN - 0009-2509

IS - 3

ER -

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

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