✦ LIBER ✦

Use of genetic algorithms in the optimization of free radical polymerizations exhibiting the trommsdorff effect

✍ Scribed by S. S. S. Chakravarthy; D. N. Saraf; Santosh K. Gupta

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 331 KB
Volume: 63
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19970124)63:4<529::aid-app14>3.0.co;2-s

No coin nor oath required. For personal study only.

✦ Synopsis

The genetic algorithm (GA) is adapted and used to obtain optimal temperature histories for methyl methacrylate polymerizations. The reaction time is minimized, while simultaneously requiring the attainment of design values of the final monomer conversion and number average chain length. The technique is robust, and gives near-global optimal solutions. As such, it can easily be used for on-line optimizing control of free radical polymerization reactors in which the reaction is associated with the Trommsdorff effect. The results obtained from GA can be improved further if these are provided as initial guesses to a computer code using the Pontryagin minimum principle with the first order control vector iteration method.

📜 SIMILAR VOLUMES

Multiobjective optimization of a free ra

Multiobjective optimization of a free radical bulk polymerization reactor using genetic algorithm

✍ Sanjeev Garg; Santosh K. Gupta 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 90 KB

A multiobjective optimization technique has been developed for free radical bulk polymerization reactors using genetic algorithm. The polymerization of methyl methacrylate in a batch reactor has been studied as an example. The two objective functions which are minimized are the total reaction time a

Modeling the Effects of Primary Radicals

Modeling the Effects of Primary Radicals in Free-Radical Polymerization

✍ Vladimir Kaminsky; Michael Buback; Mark Egorov 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 123 KB 👁 1 views

Software sensor for the bulk polymerizat

Software sensor for the bulk polymerization of systems exhibiting the trommsdorff effect using viscosity measurements

✍ Raju B. Mankar; Santosh K. Gupta; Deoki N. Saraf 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 373 KB 👁 1 views

A model-predictive software sensor was developed for on-line estimation of monomer conversion and average molecular weight during bulk polymerization of systems exhibiting a gel effect. The viscosity and temperature of the reaction mass are the measured secondary variables, which when used with the

On-line optimization of free radical bul

On-line optimization of free radical bulk polymerization reactors in the presence of equipment failure

✍ Sanjeev Garg; Santosh K. Gupta; D. N. Saraf 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 443 KB 👁 1 views

An on-line optimizing control scheme has been developed for bulk polymerization of free radical systems. The effects of random errors, as well as one kind of a major disturbance (heating system failure), have been studied. A model-based, inferential state estimation scheme was incorporated to estima

Using Kinetics and Thermodynamics in the

Using Kinetics and Thermodynamics in the Controlled Synthesis of Low Molecular Weight Polymers in Free-Radical Polymerization

✍ Christopher Barner-Kowollik; Thomas P. Davis 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 125 KB 👁 1 views

The study of free radical polymerization

The study of free radical polymerization of acrylonitrile by oxidation–reduction system using potassium persulfate–thiourea in aqueous medium

✍ G. K. Nagaraja; T. Demappa; Mahadevaiah 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 87 KB

## Abstract The polymerization kinetics of acrylonitrile (AN) with the potassium persulfate (K~2~S~2~O~8~)/thiourea redox system has been investigated volumetrically in an aqueous medium in the temperature range of 40–80°C. The rate of polymerization (__R__~__p__~) and rate of K~2~S~2~O~8~ disappea