Gel-Permeation Chromatography as a Tool for the Real-Time-Estimation of the Chain length Distribution in a Polymerization Reactor
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S. Papadopoulou
Abstract
The knowledge of the chain length distribution (CLD) during the operation in a polymerization reactor is necessary in order to control polymer quality. Model-based measurement methods (Kalman filter) provide the possibility of reconstructing on-line not directly accessible process states from easily available measurements. However, the presence of model inaccuracies or disturbances influencing primarily the CLD demand additional measurement information about CLD.
An extended Kalman filter composed of two decoupled filters and considering Gel-Permeation chromatographic, (GPC), measurements for the continuous estimation of the CLD in the case of free radical polymerization of styrene is discussed. Although the existence of a time delay, due to the GPC analysis, the consideration of this measurement in the filter algorithm produces the local observability of the states characterizing the CLD, allows continuous access to the CLD and its characteristic values and provides a periodical adaption of the CLD to the reality.
© 1987, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Present and Future Trends in Polymer Blends Technology**
- A Dispersive Mixing Testing Apparatus
- Injection Molding of Reinforced Thermosets
- Rheological Characterization of Sulfuric Acid Solutions of Poly(p-phenyleneterephthalamide)
- Fiber Spinning with Molecular Models
- Gel-Permeation Chromatography as a Tool for the Real-Time-Estimation of the Chain length Distribution in a Polymerization Reactor
- Second Moment Specification of Complex States of Polymer Chain Orientation in Fabricated Plastic Parts
- Thermal and Crystallization Behaviour of Polyphenylene Sulfide in Engineering Polymer Blends with HDPE
- Contents
- Review Paper
- Present and Future Trends in Polymer Blends Technology
- Original Contributions
- A Dispersive Mixing Testing Apparatus
- Injection Molding of Reinforced Thermosets
- Rheological Characterization of Sulfuric Acid Solutions of Poly(p-phenyleneterephthalamide)
- Fiber Spinning with Molecular Models
- Gel-Permeation Chromatography as a Tool for the Real-Time-Estimation of the Chain length Distribution in a Polymerization Reactor
- Second Moment Specification of Complex States of Polymer Chain Orientation in Fabricated Plastic Parts
- Thermal and Crystallization Behaviour of Polyphenylene Sulfide in Engineering Polymer Blends with HDPE
Artikel in diesem Heft
- Contents
- Present and Future Trends in Polymer Blends Technology**
- A Dispersive Mixing Testing Apparatus
- Injection Molding of Reinforced Thermosets
- Rheological Characterization of Sulfuric Acid Solutions of Poly(p-phenyleneterephthalamide)
- Fiber Spinning with Molecular Models
- Gel-Permeation Chromatography as a Tool for the Real-Time-Estimation of the Chain length Distribution in a Polymerization Reactor
- Second Moment Specification of Complex States of Polymer Chain Orientation in Fabricated Plastic Parts
- Thermal and Crystallization Behaviour of Polyphenylene Sulfide in Engineering Polymer Blends with HDPE
- Contents
- Review Paper
- Present and Future Trends in Polymer Blends Technology
- Original Contributions
- A Dispersive Mixing Testing Apparatus
- Injection Molding of Reinforced Thermosets
- Rheological Characterization of Sulfuric Acid Solutions of Poly(p-phenyleneterephthalamide)
- Fiber Spinning with Molecular Models
- Gel-Permeation Chromatography as a Tool for the Real-Time-Estimation of the Chain length Distribution in a Polymerization Reactor
- Second Moment Specification of Complex States of Polymer Chain Orientation in Fabricated Plastic Parts
- Thermal and Crystallization Behaviour of Polyphenylene Sulfide in Engineering Polymer Blends with HDPE
