Volume 19, Issue 6 pp. 309-322
Full Paper

Multiscale Modeling of Branch Length in Butyl Acrylate Solution Polymerization

Jonathan A. Rawlston

Jonathan A. Rawlston

School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, Georgia 30332, USA

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Francis Joseph Schork

Francis Joseph Schork

University of Maryland, Department of Chemical and Biomolecular Engineering, 2113 Chemical and Nuclear Engineering, College Park, Maryland 20742, USA

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Martha A. Grover

Corresponding Author

Martha A. Grover

School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, Georgia 30332, USA

School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr. NW, Atlanta, Georgia 30332, USA. Fax: (+404) 894 2866Search for more papers by this author
First published: 23 August 2010
Citations: 12

Abstract

Branch lengths resulting from both backbiting and intermolecular chain transfer to polymer are examined for the solution polymerization of butyl acrylate, using a rate-equation model and ordinary differential equations. Backbiting is allowed to generate branches of varying length, according to a cumulative distribution function obtained from a lattice kinetic Monte Carlo simulation. About 8% of the branches produced by backbiting are 10 mers or longer. In contrast to common assumptions about the origins of short-chain and long-chain branches, the model indicates that nearly all of the long-chain branches may be produced by backbiting, rather than intermolecular chain transfer to polymer.

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