Macromolecular Reaction Engineering
Copyright © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Materials Science Weekly Newsletter
Recently Published Articles
- Kinetics and Modeling of Ring-Opening Copolymerization of l-Lactide and ε-Caprolactone
Feiyin Weng, Xiaohui Li, Yanjiao Wang, Wen-Jun Wang and Steven J. Severtson
Article first published online: 27 APR 2015 | DOI: 10.1002/mren.201500009
A model for ring-opening copolymerization of l-lactide and ε-caprolactone based on coordination insertion mechanism, considering diffusion control in propagation and transesterification reactions is developed. It is successfully applied to predict monomer conversion, molecular weight and distribution, and cumulative polymer composition for copolymers with variable compositions as well as variable chain lengths.
- A Study on a Prepolymerization Process of Aromatic-Contained Polyamide Copolymers PA(66-co-6T) via One-Step Polycondensation
Cai-Liang Zhang, Li Wan, Xue-Ping Gu and Lian-Fang Feng
Article first published online: 16 APR 2015 | DOI: 10.1002/mren.201500006
A facile one-step polycondensation approach to prepare a prepolymer of aromatic-contained polyamide using terephthalic acid (PTA), adipic acid (ADA), hexamethylenediamine (HMDA) as raw materials was explored. The prepolymerization process was divided into four stages: formation of nylon salt, temperature rising, polycondensation, and venting.
- Prediction of the Viscoelastic Behavior of Low-Density Polyethylene Produced in High-Pressure Tubular Reactors
Prokopios Pladis, Dimitrios Meimaroglou and Costas Kiparissides
Article first published online: 16 APR 2015 | DOI: 10.1002/mren.201500008
In the present paper, the molecular information obtained from a kinetic–topology MC algorithm is utilized into the “branch on branch” comprehensive rheological model to predict the rheological behavior of the LDPE melt in a high-pressure ethylene polymerization tubular reactor.
- A Comparison of the Reactivity of Two Platinum Catalysts for Silicone Polymer Cross-Linking by UV-Activated Hydrosilation Reaction
Sophie Marchi, Marco Sangermano, Patrick Meier and Xavier Kornmann
Article first published online: 7 APR 2015 | DOI: 10.1002/mren.201500005
The photopolymerization of silicone polymers can be achieved in the presence of an appropriate transition-metal organometallic compounds. The reactivity of two different platinum catalysts is investigated for the formation of both thin and several centimeters thick materials. DSC analyses are performed to analyze the enthalpy of the different reactions.
- Modeling of Highly Branched Water-Soluble Polymers with Applications to Drug Delivery Model Extensions and Validation
Seung Yeon Kim, Robert Van Dyke, Kai Chang, Lakeshia J. Taite and Francis Joseph Schork
Article first published online: 7 APR 2015 | DOI: 10.1002/mren.201500010
The use of controlled polymerization of a polymer exhibiting a lower critical solution temperature and a polymerizable chain transfer agent to produce highly branched polymer for is explored via mathematical modeling. The application of such polymers is in drug delivery. The model is developed and compared with experimental data.