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Compounding and Morphology of Nylon/Ethylene-Propylene Rubber Reactive and Nonreactive Blends

  • C. E. Scott and C. W. Macosko
Published/Copyright: May 28, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 10 Issue 1

Abstract

The processing behavior and morphology are investigated for nonreactive and reactive nylon/ethylene-propylene rubber blends. The nylon (PA) is a partially aromatic amorphous nylon with amine termination. The rubbery phases are an ethylene-propylene rubber (EP) and a similar ethylene-propylene rubber (EP-MA) with 0.7% grafted maleic anhydride. The nonreactive PA/EP blends show poor interfacial adhesion between the two phases. The reactive PA/EP-MA blends show excellent adhesion and much smaller dispersed phase domain sizes. The interfacial chemical reaction affects several separate parameters which influence the size of the dispersed phase: the formation of a copolymer at the interface which reduces the interfacial tension; different rheological properties of the modified and unmodified rubbers; the effect of the interfacial reaction on the rheology of the blend; changes in process parameters due to the effect of the interfacial reaction; reduction in the rate of particle-particle coalescence due to the presence of the copolymer at the interface; as well as other effects. A semi-empirical relationship is used to separate the effects of phase rheology and applied mixing stress.

* Mail address: Prof. Dr. C.W. Macosko, Department of Chemical Engineering, University of Minnesota, 421 Washington Avenue SE, Minneapolis, MN 55455, U.S.A.
Received: 1994-5-2
Accepted: 1994-8-24
Published Online: 2013-05-28
Published in Print: 1995-03-01

© 1995, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Battenfeld: International Polymer Processing Machinery Manufacturer
  5. Screw Extrusion/Mixing
  6. On-line Measurement of Residence Time Distribution in a Twin-screw Extruder
  7. Bulk Density of Plastic Pellets in a Screw Channel
  8. Simulation of the Screw Bowing Effect in an Intermeshing Counter-Rotating Twin-screw Extruder
  9. Blending of SAN and SBS in Corotating Twin-screw Extruders
  10. Blends of PVC with Miscible Polymers
  11. Solids Transport in Extruders
  12. Reactive Processing
  13. Compounding and Morphology of Nylon/Ethylene-Propylene Rubber Reactive and Nonreactive Blends
  14. Die Extrusion
  15. Approximate Simulation Method on the Three-dimensional Polymer Melts Flow in a Die
  16. Molding
  17. On the Simulation of Thermoplastic Injection Moulding Process
  18. Simulation of Heat Transfer and Melting in Rotational Molding
  19. Polyarylamide/Polypropylene Blends
  20. Flexural Stiffness of Injection Molded Glass Fiber Reinforced Thermoplastics
  21. Control Volume Finite Element Method for Mold Filling Simulation
https://doi.org/10.3139/217.950036

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Battenfeld: International Polymer Processing Machinery Manufacturer
  5. Screw Extrusion/Mixing
  6. On-line Measurement of Residence Time Distribution in a Twin-screw Extruder
  7. Bulk Density of Plastic Pellets in a Screw Channel
  8. Simulation of the Screw Bowing Effect in an Intermeshing Counter-Rotating Twin-screw Extruder
  9. Blending of SAN and SBS in Corotating Twin-screw Extruders
  10. Blends of PVC with Miscible Polymers
  11. Solids Transport in Extruders
  12. Reactive Processing
  13. Compounding and Morphology of Nylon/Ethylene-Propylene Rubber Reactive and Nonreactive Blends
  14. Die Extrusion
  15. Approximate Simulation Method on the Three-dimensional Polymer Melts Flow in a Die
  16. Molding
  17. On the Simulation of Thermoplastic Injection Moulding Process
  18. Simulation of Heat Transfer and Melting in Rotational Molding
  19. Polyarylamide/Polypropylene Blends
  20. Flexural Stiffness of Injection Molded Glass Fiber Reinforced Thermoplastics
  21. Control Volume Finite Element Method for Mold Filling Simulation
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