Heuristic Search Strategy for Transforming Microstructural Patterns to Optimal Copolymerization Recipes

Heuristic Search Strategy for Transforming Microstructural Patterns to Optimal Copolymerization... Manipulation and optimization of copolymer microstructure for tailoring final properties is of great importance in macromolecular science and engineering. Uncovering the complexities of the interrelationships between copolymerization recipe and copolymer microstructure (a challenging field of study in its own right) is a multiobjective optimization problem, which has attracted a lot of attention in the last 10–15 years. In the present study, a powerful optimizer is developed based on the Non‐dominated Sorting Genetic Algorithm (NSGA‐II) for transforming desired microstructural copolymerization profiles, including molecular weight distribution and chemical composition distribution, back to optimal copolymerization recipes and operating conditions. The optimizer developed has the beneficial features of robust machine learning and multiobjective optimization based upon heuristic search strategies. The metallocene‐catalyzed ethylene/α‐olefin copolymerization is selected as a sufficiently complex system to challenge the proposed optimization tool. The developed computer code is used to explore copolymerization recipes (polymerization temperature and concentrations of ethylene, 1butene, cocatalyst, and hydrogen) needed to synthesize copolymers having desired microstructural features. Based on the results obtained, it is now possible to produce various grades or tailor‐make the copolymer structure by suggesting the “best” copolymerization recipe/conditions as reliably as possible. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Macromolecular Theory and Simulations Wiley

Heuristic Search Strategy for Transforming Microstructural Patterns to Optimal Copolymerization Recipes

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Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1022-1344
eISSN
1521-3919
D.O.I.
10.1002/mats.201700088
Publisher site
See Article on Publisher Site

Abstract

Manipulation and optimization of copolymer microstructure for tailoring final properties is of great importance in macromolecular science and engineering. Uncovering the complexities of the interrelationships between copolymerization recipe and copolymer microstructure (a challenging field of study in its own right) is a multiobjective optimization problem, which has attracted a lot of attention in the last 10–15 years. In the present study, a powerful optimizer is developed based on the Non‐dominated Sorting Genetic Algorithm (NSGA‐II) for transforming desired microstructural copolymerization profiles, including molecular weight distribution and chemical composition distribution, back to optimal copolymerization recipes and operating conditions. The optimizer developed has the beneficial features of robust machine learning and multiobjective optimization based upon heuristic search strategies. The metallocene‐catalyzed ethylene/α‐olefin copolymerization is selected as a sufficiently complex system to challenge the proposed optimization tool. The developed computer code is used to explore copolymerization recipes (polymerization temperature and concentrations of ethylene, 1butene, cocatalyst, and hydrogen) needed to synthesize copolymers having desired microstructural features. Based on the results obtained, it is now possible to produce various grades or tailor‐make the copolymer structure by suggesting the “best” copolymerization recipe/conditions as reliably as possible.

Journal

Macromolecular Theory and SimulationsWiley

Published: Jan 1, 2018

Keywords: ; ; ; ; ;

References

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