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Processes 2015, 3(4), 731-748; doi:10.3390/pr3040731

Model-Based Reactor Design in Free-Radical Polymerization with Simultaneous Long-Chain Branching and Scission

Department of Materials Science and Engineering, University of Fukui, Fukui 910-8507, Japan
Academic Editor: Masoud Soroush
Received: 29 September 2015 / Accepted: 22 October 2015 / Published: 3 November 2015
(This article belongs to the Special Issue Polymer Modeling, Control and Monitoring)
View Full-Text   |   Download PDF [1976 KB, uploaded 3 November 2015]   |  

Abstract

Polymers are the products of processes and their microstructure can be changed significantly by the reactor systems employed, especially for nonlinear polymers. The Monte Carlo simulation technique, based on the random sampling technique, is used to explore the effect of reactor types on the branched polymer structure, formed through free-radical polymerization with simultaneous long-chain branching and scission, as in the case of low-density polyethylene synthesis. As a simplified model for a tower-type multi-zone reactor, a series of continuous stirred-tank reactors, consisting of one big tank and the same N-1 small tanks is considered theoretically. By simply changing the tank arrangement, various types of branched polymers, from star-like globular structure to a more randomly branched structure, can be obtained, while keeping the following properties of the final products, the monomer conversion to polymer, the average branching and scission densities, and the relationship between the mean-square radius of gyration and molecular weight. View Full-Text
Keywords: branched; Monte Carlo simulation; polyethylene (PE); radical polymerization; reactor design branched; Monte Carlo simulation; polyethylene (PE); radical polymerization; reactor design
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Tobita, H. Model-Based Reactor Design in Free-Radical Polymerization with Simultaneous Long-Chain Branching and Scission. Processes 2015, 3, 731-748.

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