Home Comparison Studies of Anionic Polymerization of Caprolactam in Different Twin Screw Extruders
Article
Licensed
Unlicensed Requires Authentication

Comparison Studies of Anionic Polymerization of Caprolactam in Different Twin Screw Extruders

  • B. H. Lee and J. L. White
Published/Copyright: June 5, 2013
Become an author with De Gruyter Brill
Submit Manuscript Author Information
International Polymer Processing
From the journal International Polymer Processing Volume 16 Issue 2

Abstract

There is a study on the comparison of twin screw extruders and a batch mixer in the polymerization of caproiactam. A sodium metal initiator and 4–4'-diphenylmethane diisocyanate (MDI) as the activator were used. Our attention is given to (i) a modular intermeshing co-rotating twin screw extruder, (ii) a modular intermeshing counter-rotating twin screw extruder and (Hi) a modular tangential counter-rotating twin screw extruder. We consider the variables of screw configuration, temperature profile, screw speed, and throughput on polymer characteristics. It was found that the conversion of twin screw extruders with proper mixing segments is much higher than the internal mixer at low mixing times. This was seen as higher conversion in twin screw extruders than an internal mixer for the same mean residence time considered.

* Mail address: J. L. White, Institute of Polymer Engineering, The University of Akron, Akron, OH 44325-0301, USA
Received: 2000-10-19
Accepted: 2001-2-16
Published Online: 2013-06-05
Published in Print: 2001-05-01

© 2001, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Editorial
  2. Ninth of a Series Pioneer of the Modular Co-rotating Twin Screw Extruder–Rudolf Erdmenger (1911–1991)
  3. Internal Mixer
  4. The “New-Generation” Co-flow Intermeshing Internal Mixer
  5. Screw Extrusion/Continuous Mixers
  6. Twin Screw Compounding of PE-HD Wood Flour Composites
  7. A Transient Melting Model of Polymer Balls Sliding Against the Barrel
  8. Prediction of Screw Length Required for Polymer Melting and Melting Characteristics
  9. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  10. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  11. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  12. The Mapping Method for Mixing Optimization Part I: The Multiflux Static Mixer
  13. The Mapping Method for Mixing Optimization
  14. Reactive Processing
  15. Comparison Studies of Anionic Polymerization of Caprolactam in Different Twin Screw Extruders
  16. Compatibilization of SBR/NBR Blends Using Chemically Modified Styrene Butadiene Rubber
  17. Coextrusion
  18. Convective Instabilities in the Coextrusion Process
  19. Numerical Simulation of Polymer Coextrusion Flows
  20. Thermoforming
  21. Tight Tolerance Thermoforming
https://doi.org/10.3139/217.1636

Articles in the same Issue

  1. Editorial
  2. Ninth of a Series Pioneer of the Modular Co-rotating Twin Screw Extruder–Rudolf Erdmenger (1911–1991)
  3. Internal Mixer
  4. The “New-Generation” Co-flow Intermeshing Internal Mixer
  5. Screw Extrusion/Continuous Mixers
  6. Twin Screw Compounding of PE-HD Wood Flour Composites
  7. A Transient Melting Model of Polymer Balls Sliding Against the Barrel
  8. Prediction of Screw Length Required for Polymer Melting and Melting Characteristics
  9. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  10. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  11. Melting of Polymer Blends in Co-rotating Twin Screw Extruders
  12. The Mapping Method for Mixing Optimization Part I: The Multiflux Static Mixer
  13. The Mapping Method for Mixing Optimization
  14. Reactive Processing
  15. Comparison Studies of Anionic Polymerization of Caprolactam in Different Twin Screw Extruders
  16. Compatibilization of SBR/NBR Blends Using Chemically Modified Styrene Butadiene Rubber
  17. Coextrusion
  18. Convective Instabilities in the Coextrusion Process
  19. Numerical Simulation of Polymer Coextrusion Flows
  20. Thermoforming
  21. Tight Tolerance Thermoforming
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 25.10.2025 from https://www.degruyterbrill.com/document/doi/10.3139/217.1636/html
Scroll to top button