Direct and inverse neural network modeling in free radical polymerization

• Authors: Silvia Curteanu
• Languages of publication: EN

Abstracts

EN

The first part of this paper reviews of the most important aspects regarding the use of neural networks in the polymerization reaction engineering. Then, direct and inverse neural network modeling of the batch, bulk free radical polymerization of methyl methacrylate is performed. To obtain monomer conversion, number and weight average molecular weights, and mass reaction viscosity, separate neural networks and, a network with multiple outputs were built (direct neural network modeling). The inverse neural network modeling gives the reaction conditions (temperature and initial initiator concentration) that assure certain values of conversion and polymerization degree at the end of the reaction. Each network is a multi-layer perceptron with one or two hidden layers and a different number of hidden neurons. The best topology correlates with the smallest error at the end of the training phase. The possibility of obtaining accurate results is demonstrated with a relatively simple architecture of the networks. Two types of neural network modeling, direct and inverse, represent possible alternatives to classical procedures of modeling and optimization, each producing accurate results and having simple methodologies.

Keywords

EN

neural networks; direct and inverse neural network modeling; methyl methacrylate free radical polymerization

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2004
• Volume: 2
• Issue: 1
• Pages: 113-140

Dates

published

1 - 3 - 2004

online

1 - 3 - 2004

Contributors

author

Silvia Curteanu

• Department of Chemcial Engineering, “Gh. Asachi” Technical University LASI, B-dul D. Mangeron No. 71A, LASI, Romania

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Identifiers

DOI

10.2478/BF02476187