Macromolecular Reaction Engineering
Copyright © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Materials Science Weekly Newsletter
Recently Published Articles
- 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.
- A Novel Approval for Degradation of Polybutadiene and Synthesis of Diene-Based Telechelic Oligomers via Olefin Cross Metathesis
Bin Jiang, Tian Wei, Ting-Ting Zou, Gary L. Rempel and Qin-Ming Pan
Article first published online: 1 APR 2015 | DOI: 10.1002/mren.201500004
Synthesis of well-defined functionalized telechelic oligomers containing only a few butadiene repeating units is accomplished via metathetic degradation of polybutadiene in the presence of Grubbs second generation catalyst with selected monomers as chain transfer agents. The structures and compositions of metathesis products are acquired using 1H-NMR and GC-MS analysis.