A model and measurement technique for micromixing in copolymerization reactors

M. Atiqullah; E. B. Nauman

doi:10.1016/0009-2509(90)87119-D

A model and measurement technique for micromixing in copolymerization reactors

M. Atiqullah, E. B. Nauman^*

^*Corresponding author for this work

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

22 Scopus citations

Abstract

A new model is presented for copolymer composition distributions in a stirred tank reactor with unmixed feed streams. The new model is a variant which now explicitly considers the effects of backmixing on the popular, lamellar stretch model. It can also be regarded as an application to time-dependent slab geometries of the droplet diffusion model. An experimental technique based on gradient elution thin-layer chromatography was developed to measure the copolymer composition distribution in styrene-methyl methacrylate copolymers. Results for a laboratory-scale, stirred tank reactor showed good agreement with the statistical or Stockmeyer distribution, thus indicating a close approach to perfect mixing in this small vessel. An upper limit on the initial striation thickness was calculated to be 1 mm.

Original language	English
Pages (from-to)	1267-1279
Number of pages	13
Journal	Chemical Engineering Science
Volume	45
Issue number	5
DOIs	https://doi.org/10.1016/0009-2509(90)87119-D
State	Published - 1990
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1016/0009-2509(90)87119-D

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title = "A model and measurement technique for micromixing in copolymerization reactors",

abstract = "A new model is presented for copolymer composition distributions in a stirred tank reactor with unmixed feed streams. The new model is a variant which now explicitly considers the effects of backmixing on the popular, lamellar stretch model. It can also be regarded as an application to time-dependent slab geometries of the droplet diffusion model. An experimental technique based on gradient elution thin-layer chromatography was developed to measure the copolymer composition distribution in styrene-methyl methacrylate copolymers. Results for a laboratory-scale, stirred tank reactor showed good agreement with the statistical or Stockmeyer distribution, thus indicating a close approach to perfect mixing in this small vessel. An upper limit on the initial striation thickness was calculated to be 1 mm.",

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year = "1990",

doi = "10.1016/0009-2509(90)87119-D",

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AU - Atiqullah, M.

AU - Nauman, E. B.

PY - 1990

Y1 - 1990

N2 - A new model is presented for copolymer composition distributions in a stirred tank reactor with unmixed feed streams. The new model is a variant which now explicitly considers the effects of backmixing on the popular, lamellar stretch model. It can also be regarded as an application to time-dependent slab geometries of the droplet diffusion model. An experimental technique based on gradient elution thin-layer chromatography was developed to measure the copolymer composition distribution in styrene-methyl methacrylate copolymers. Results for a laboratory-scale, stirred tank reactor showed good agreement with the statistical or Stockmeyer distribution, thus indicating a close approach to perfect mixing in this small vessel. An upper limit on the initial striation thickness was calculated to be 1 mm.

AB - A new model is presented for copolymer composition distributions in a stirred tank reactor with unmixed feed streams. The new model is a variant which now explicitly considers the effects of backmixing on the popular, lamellar stretch model. It can also be regarded as an application to time-dependent slab geometries of the droplet diffusion model. An experimental technique based on gradient elution thin-layer chromatography was developed to measure the copolymer composition distribution in styrene-methyl methacrylate copolymers. Results for a laboratory-scale, stirred tank reactor showed good agreement with the statistical or Stockmeyer distribution, thus indicating a close approach to perfect mixing in this small vessel. An upper limit on the initial striation thickness was calculated to be 1 mm.

UR - https://www.scopus.com/pages/publications/0025568017

U2 - 10.1016/0009-2509(90)87119-D

DO - 10.1016/0009-2509(90)87119-D

M3 - Article

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SP - 1267

EP - 1279

JO - Chemical Engineering Science

JF - Chemical Engineering Science

IS - 5

ER -

A model and measurement technique for micromixing in copolymerization reactors

Abstract

ASJC Scopus subject areas

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