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Study on Functionalization of Isotactic PP with Maleic Anhydride in an Internal Mixer and a Twin-screw Extruder

  • S. M. Ghahari , H. Nazokdast and H. Assempour
Published/Copyright: June 3, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 18 Issue 3

Abstract

The grafting reaction of maleic anhydride to molten iPP was investigated in both an internal mixer and a twin- screw extruder. The influence of peroxide content, added maleic anhydride and process variables such as residence time, screw speed and reaction temperature were considered. The rate and level of grafting were quantitatively measured by FTIR and titrometery technics. Maximum level of grafting at constant peroxide content was obtained when concentration of added maleic anhydride reached up to 6%, above which is declined. The rate of grafting increased with increasing the peroxide content. However the β-scission of polypropylene was found to be taken place as a parallel competitive reaction which was intensified with increasing peroxide content. It was demonstrated that it is possible to make an optimization on the grafting reaction on the basis of experimental results in conjunction with a free radical kinetic model developed for this reaction.

* Mail address: H. Nazokdast, Dept. of Polymer Engineering, Amir Kabir University of Technology, Hafez, Ave. No. 424, P.O. Box 15875-4413, Teheran, Iran
Received: 2002-9-10
Accepted: 2003-5-26
Published Online: 2013-06-03
Published in Print: 2003-09-01

© 2003, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. First in a Series: Polymer Processing in Developing Countries Polymer Processing in Peru
  5. Screw Extrusion
  6. Modeling and Analysis of Helicoidal Flow in a Conical Extruder
  7. A Powerful Universal Plasticating System for Single-screw-extruders and Injection-moulding Machines
  8. Cross Channel Flow Velocity and Motion Trajectory of Polymers in a Helical Channel
  9. Mixing and Compounding
  10. Influence of Low Molecular Weight Additives on Die Extrusion Rheometer Flow of Thermoplastic Melts
  11. Design of a Static Temperature Scanning Ultrasonic Measurement System and Application to Multi-phase Polymer Systems
  12. Raman Spectroscopy as an On-line Technique to Monitor Shear Flow Effect on Partially Miscible Polymer Blends
  13. Reactive Extrusion
  14. Flow Effects on Polymer Transesterification
  15. A Dynamic Model Accounting for Oscillating Behavior in Reactive Extrusion
  16. Study on Functionalization of Isotactic PP with Maleic Anhydride in an Internal Mixer and a Twin-screw Extruder
  17. Quality Aspects on the Power Cable Core Insulation Extrusion and Thermal Curing Process
  18. Die Extrusion
  19. Flow Balancing in Extrusion Dies for Thermoplastic Profiles
  20. Flow Balancing in Extrusion Dies for Thermoplastic Profiles
  21. Molding
  22. On the Residual Stress and Shrinkage in Injection Compression Molding
https://doi.org/10.3139/217.1750

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. First in a Series: Polymer Processing in Developing Countries Polymer Processing in Peru
  5. Screw Extrusion
  6. Modeling and Analysis of Helicoidal Flow in a Conical Extruder
  7. A Powerful Universal Plasticating System for Single-screw-extruders and Injection-moulding Machines
  8. Cross Channel Flow Velocity and Motion Trajectory of Polymers in a Helical Channel
  9. Mixing and Compounding
  10. Influence of Low Molecular Weight Additives on Die Extrusion Rheometer Flow of Thermoplastic Melts
  11. Design of a Static Temperature Scanning Ultrasonic Measurement System and Application to Multi-phase Polymer Systems
  12. Raman Spectroscopy as an On-line Technique to Monitor Shear Flow Effect on Partially Miscible Polymer Blends
  13. Reactive Extrusion
  14. Flow Effects on Polymer Transesterification
  15. A Dynamic Model Accounting for Oscillating Behavior in Reactive Extrusion
  16. Study on Functionalization of Isotactic PP with Maleic Anhydride in an Internal Mixer and a Twin-screw Extruder
  17. Quality Aspects on the Power Cable Core Insulation Extrusion and Thermal Curing Process
  18. Die Extrusion
  19. Flow Balancing in Extrusion Dies for Thermoplastic Profiles
  20. Flow Balancing in Extrusion Dies for Thermoplastic Profiles
  21. Molding
  22. On the Residual Stress and Shrinkage in Injection Compression Molding
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