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The Effect of CO2 Pressure on Viscoelasticity of LDPE

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Published/Copyright: April 6, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 23 Issue 2

Abstract

The effect of impregnated carbon dioxide (CO2) and pressure on dynamic viscoelastic responce of a commercial LDPE was investigated by a magnetic driven rotational rheometer equipped with a high-pressure chamber. It was found that i) the mode distribution of the viscoelastic relaxation is not sensitive to CO2 pressure realizing the superposition among moduli obtained at different pressures, that ii) the horizontal shift factor for the superposition reflecting the monomeric friction exponentially decreases with increase of the pressure, and that iii) the vertical shift factor relating to the entanglement number density is not sensitive to the pressure. From the observation it is suggested that CO2 and pressure mainly affect the monomeric friction and the effect on the entanglement dilation is not significant. The results are consistent with the dielectric measurement on polyisoprene (Matsumiya et al., Nihon Reoroji Gakkaishi, 35, 155–161, 2007).

∗ Mail address: Yuichi Masubuchi, Institute for Chemical Research, Kyoto University, Gokasho, Uji 611-0011, Kyoto Japan. E-mail:

References

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Received: 2007-1-15
Accepted: 2008-1-17
Published Online: 2013-04-06
Published in Print: 2008-05-01

© 2008, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Special Issue on Asian Workshop on Polymer Processing 2006
  5. Invited Papers
  6. Hydrophobicity Improvement of PET Fabrics after SF6 Plasma Treatment
  7. Improving the Mechanical Properties of ENR/NBR Blends via Masterbatches with Initial Accelerator Concentration Gradients
  8. Breathable Film from Reactive Processing of LLDPE/NR Blends with ENR and Maleic Anhydride
  9. Preventing Film Blocking and Optimizing Haze of Metallocene PE Blown Films Through Blending with Rigid Polymers
  10. Effects of Hot-drawing and Annealing on the Morphology and Mechanical Properties of Biodegradable Polyester Monofilament Fibers
  11. Rheological Modification of LLDPE Through Reactive Processing with Peroxide
  12. The Effect of CO2 Pressure on Viscoelasticity of LDPE
  13. Development of Bicomponent Spunbond Nonwoven Webs Consisting of Ultra-fine Splitted Fibers
  14. Interfacial Characteristics of Film Insert Moldings Consisting of Semicrystalline and Amorphous Polymers
  15. Regular Contributed Articles
  16. Erosive Wear Assesment of Glass Reinforced Polyester-Flyash Composites Using Taguchi Method
  17. Melt Strength and Thermal Properties of Organic Peroxide Modified Virgin and Recycled HDPE
  18. Three-Dimensional Numerical Simulation of Segregation in Powder Injection Molding
  19. An Experimental Study on the Pickout of Scaled-up Gravure Cells
  20. Mechanical and Thermal Propertiesof Fly Ash/Reclaimed Rubber Powder Composites Improved by KH-550 Coupling Agent
  21. Melt Processability and Foam Suppression of High Molecular Weight Polyethylenes Plasticized with Supercritical Carbon Dioxide
  22. PPS News
  23. PPS News
  24. Seikei-Kakou Abstracts
  25. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.2030

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Special Issue on Asian Workshop on Polymer Processing 2006
  5. Invited Papers
  6. Hydrophobicity Improvement of PET Fabrics after SF6 Plasma Treatment
  7. Improving the Mechanical Properties of ENR/NBR Blends via Masterbatches with Initial Accelerator Concentration Gradients
  8. Breathable Film from Reactive Processing of LLDPE/NR Blends with ENR and Maleic Anhydride
  9. Preventing Film Blocking and Optimizing Haze of Metallocene PE Blown Films Through Blending with Rigid Polymers
  10. Effects of Hot-drawing and Annealing on the Morphology and Mechanical Properties of Biodegradable Polyester Monofilament Fibers
  11. Rheological Modification of LLDPE Through Reactive Processing with Peroxide
  12. The Effect of CO2 Pressure on Viscoelasticity of LDPE
  13. Development of Bicomponent Spunbond Nonwoven Webs Consisting of Ultra-fine Splitted Fibers
  14. Interfacial Characteristics of Film Insert Moldings Consisting of Semicrystalline and Amorphous Polymers
  15. Regular Contributed Articles
  16. Erosive Wear Assesment of Glass Reinforced Polyester-Flyash Composites Using Taguchi Method
  17. Melt Strength and Thermal Properties of Organic Peroxide Modified Virgin and Recycled HDPE
  18. Three-Dimensional Numerical Simulation of Segregation in Powder Injection Molding
  19. An Experimental Study on the Pickout of Scaled-up Gravure Cells
  20. Mechanical and Thermal Propertiesof Fly Ash/Reclaimed Rubber Powder Composites Improved by KH-550 Coupling Agent
  21. Melt Processability and Foam Suppression of High Molecular Weight Polyethylenes Plasticized with Supercritical Carbon Dioxide
  22. PPS News
  23. PPS News
  24. Seikei-Kakou Abstracts
  25. Seikei-Kakou Abstracts
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