Macromolecular Reaction Engineering
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Materials Science Weekly Newsletter
Recently Published Articles
- Modeling Acrylic Acid Radical Polymerization in Aqueous Solution
Nils F. G. Wittenberg, Calista Preusser, Hendrik Kattner, Marek Stach, Igor Lacík, Robin A. Hutchinson and Michael Buback
Article first published online: 11 JUN 2015 | DOI: 10.1002/mren.201500017
The complexities of aqueous-phase polymerization of non-ionized acrylic acid are captured in a model that considers the formation of midchain radicals, the influence of radical chain length on termination kinetics, and the influence of monomer concentration on propagation kinetics. The model is verified against monomer conversion profiles, polymer branching levels, and molar mass distributions collected over a range of experimental conditions.
- When Polymer Reaction Engineers Play Dice: Applications of Monte Carlo Models in PRE (pages 141–185)
Amanda L. T. Brandão, João B. P. Soares, José Carlos Pinto and André L. Alberton
Article first published online: 3 JUN 2015 | DOI: 10.1002/mren.201500020
Monte Carlo (MC) methods are the most powerful of all mathematical methods used in polymer reaction engineering because they can predict the molecular architecture of polymers with details that cannot be easily captured by any other modeling technique. This article reviews the literature on steady-state and dynamic MC methods in polymer reaction engineering. We hope to convince the readers that playing dice regularly can be a great asset to polymer reactors engineers.
- You have free access to this contentMathematical Tools and Approaches for Polymerization Reaction Engineering II— Statistical Modeling Tools and Approaches (pages 138–140)
José Carlos Pinto
Article first published online: 26 MAY 2015 | DOI: 10.1002/mren.201500027
- Model-Based Production of Polymer Chains Having Precisely Designed End-to-End Gradient Copolymer Composition and Chain Topology Distributions in Controlled Radical Polymerization, A Review
Xiaohui Li, Shaoning Liang, Wen-Jun Wang, Bo-Geng Li, Yingwu Luo and Shiping Zhu
Article first published online: 15 MAY 2015 | DOI: 10.1002/mren.201500012
This article summarizes the recent development and application of the model-based monomer feeding strategies (MMFS) on precise production of polymer chains. With the MMFS method, a series of polymer products with predesigned copolymer composition distributions and chain topologies are successfully synthesized by semi-batch-controlled radical polymerization. Extending MMFS to heterogeneous systems and to continuous polymerization operations are encouraged in future research.
- Kinetic Parameters of the Initiator Decomposition in Microwave and in Conventional Batch Reactors – KPS and V50-Case Studies
Cristiane Costa, André L. Alberton, Alexandre F. Santos, Montserrat Fortuny, Pedro H. H. Araújo, Claudia Sayer and José Carlos Pinto
Article first published online: 13 MAY 2015 | DOI: 10.1002/mren.201500013
This work presents a thorough statistical analysis of parameters used to describe the kinetic rate constants of microwave-assisted decomposition of initiators. The confidence regions of the estimated parameters confirm the difference for microwave and conventional heating. The relation of temperature and volume of hot spots can explain the increase of kinetic rate constants as a thermal effect.