LDPE Production in Tubular Reactors: Comprehensive Model for the Prediction of the Joint Molecular Weight-Short (Long) Chain Branching Distributions
- Dietrich, Maira
- Sarmoria, Claudia
- Brandolin, Adriana
- Asteasuain, Mariano
DOIAbstract
Good control on molecular properties, and as a consequence on end-use properties, is very important for low-density polyethylene (LDPE) manufacturers. However, the connection between the architecture of polymer chains and the kinetic mechanism and polymerization conditions is still a subject of study. In this work, we present a comprehensive model of the polymerization of ethylene in high-pressure tubular reactors. In addition to the usual predictions of conversion, temperature profiles, and average molecular properties, this model also provides bivariate distributions such as molecular-weight-long-chain branching distribution and molecular-weight-short-chain branching distribution of LDPE produced under different operating conditions. The ...
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