Monitoring Reactive Processes along the Extruder
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Abstract
This paper reports data obtained from monitoring the evolution of chemical conversion and morphology during the production of a compatibilized polymer blend of PA 6/EPM/EPM-g-MA and of modified polyolefins (grafted with MA) in a co-rotating twin screw extruder. In the first case, the MA content of the modified rubber decreases strongly to almost zero-level and the particle size reduces dramatically from mm to sub-lm level already in the melting zone. The process seems to be mainly influenced by the local flow characteristics, as they assure efficient generation and renewal of interfacial area. In the second case of MA grafting, a similar evolution is observed regardless of the polyolefin type but, for this kind of reactions, temperature and residence time play an important role.
A brief presentation of the on-line monitoring tools used in the above studies is also included.
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© 2005, Carl Hanser Verlag, Munich
Articles in the same Issue
- Contents
- Contents
- Editorial
- International Polymer Processing Special Issue Macro 2004
- Invited Paper
- A Dilatometer to Measure the Influence of Cooling Rate and Melt Shearing on Specific Volume
- Monitoring Reactive Processes along the Extruder
- Stretch and Shape Distributions of Droplets with Interfacial Tension in Chaotic Mixing
- Cast Film Extrusion
- Nozzle Injection of Physical Blowing Agents in the Injection Molding of Microcellular Foams
- Visualization Analysis of Asymmetric Fountain Flow Phenomenon in Injection Molding of Filler-reinforced Resins by Rotary Runner Exchange System
- In-process Monitoring of Micromoulding – Assessment of Process Variation
- Processing-induced Properties in Glassy Polymers
- Structure Development in Injection Molding: A 3D Simulation with a Differential Formulation of the Kinetic Equations
- Evolution of Morphology of iPP in Processing Conditions
- Regular Contributed Articles
- 3D Simulation of Gas Assisted Injection Molding Analysis of Primary and Secondary Gas Penetration and Comparison with Experimental Results
- Microcellular Injection Molding
- Effect of Material Species on Flash Generation of PPS/GF Composites
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Editorial
- International Polymer Processing Special Issue Macro 2004
- Invited Paper
- A Dilatometer to Measure the Influence of Cooling Rate and Melt Shearing on Specific Volume
- Monitoring Reactive Processes along the Extruder
- Stretch and Shape Distributions of Droplets with Interfacial Tension in Chaotic Mixing
- Cast Film Extrusion
- Nozzle Injection of Physical Blowing Agents in the Injection Molding of Microcellular Foams
- Visualization Analysis of Asymmetric Fountain Flow Phenomenon in Injection Molding of Filler-reinforced Resins by Rotary Runner Exchange System
- In-process Monitoring of Micromoulding – Assessment of Process Variation
- Processing-induced Properties in Glassy Polymers
- Structure Development in Injection Molding: A 3D Simulation with a Differential Formulation of the Kinetic Equations
- Evolution of Morphology of iPP in Processing Conditions
- Regular Contributed Articles
- 3D Simulation of Gas Assisted Injection Molding Analysis of Primary and Secondary Gas Penetration and Comparison with Experimental Results
- Microcellular Injection Molding
- Effect of Material Species on Flash Generation of PPS/GF Composites
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts
