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Processing/Structure Relationships of Mica-Filled PE-Films with Low Oxygen Permeability

  • M. Xanthos , N. Faridi und Y. Li
Veröffentlicht/Copyright: 4. Juni 2013
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International Polymer Processing
Aus der Zeitschrift International Polymer Processing Band 13 Heft 1

Abstract

Lamellar microstructures can decrease gas and vapor permeability by increasing the diffusive path or the so-called “tortuosity” in plastic films. In this research, phlogopite mica flakes were used as oxygen barrier materials in films produced in a blown film extrusion line. Both high and low density polyethylenes as well as their blends were used as matrices with mica concentrations not exceeding 10-wt.-%. A decrease in oxygen permeability of both low density and high density polyethylene films was achieved with increasing volume fraction of mica. Film morphologies indicated strong flow-induced orientation of the flakes in overlapping, discontinuous layers that were reasonably well oriented parallel to the surface of the films. Melt shear viscosity and melt strength of the mica compounds and tensile properties of films were also examined and correlated with processability. Overall, it was found that, by contrast to the LDPE compounds, optimization of the barrier properties of the HDPE films was a compromise between the desired reduction in permeability and the loss in processability and film ductility. The experimentally determined elastic modulus values were found to be in relatively good agreement with predictions from flake reinforcement theories. A predictive model for the analysis of the permeability results, assuming that both mica flakes and the crystalline domains of the films were impermeable to oxygen, was able to describe the permeability results in spite of several simplifying assumptions.

* Mail address: Prof. Dr. M. Xanthos, Research Polymer Processing Institute, Castle Point on the Hudson, Hoboken, NJ 07030, USA
Received: 1997-5-30
Accepted: 1997-10-17
Published Online: 2013-06-04
Published in Print: 1998-03-01

© 1998, Carl Hanser Verlag, Munich

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. J. A. Biesenberger, G. Astarita, D. C. Bogue
  5. Screw Extrusion/Mixing
  6. Modeling Solids Conveying in Polymer Extruders
  7. Comparison between LDPE Conventional and Autothermal Extrusion Characteristics
  8. Transesterification of Ethylene Acetate Copolymer in a Twin Screw Extruder
  9. Stabilising the Structure of HDPE by the Use of Highly-dispersed Mixture of Fe/FeO
  10. Pumping Characteristics of an Intermeshing Co-rotating Twin Screw Extruder
  11. Flow Behaviour of Blends of Poly(ethylene-Co-Acrylic Acid) and Epoxidised Natural Rubber
  12. Die Extrusion
  13. Rheological Behaviour of HDPE/PA 11 Blends
  14. Melt Flow Properties of LDPE/HDPE Blends in Capillary Extrusion
  15. Fibers and Film
  16. Rheological Behaviour of LLDPE/LDPE Blends under Elongational Deformation
  17. Processing/Structure Relationships of Mica-Filled PE-Films with Low Oxygen Permeability
  18. On the Charge State of Melt-Blown Polymer Materials
  19. Temperature Measuring in Plastics Processing with Infrared Radiation Thermometers
  20. Comparative Study of Structure Development in Melt Spinning Polyolefin Fibers
  21. Moulding
  22. Sintering Rheology of Semi-Crystalline Polymers
  23. Molding
  24. Melt Flow Instabilities of Filled HDPE
  25. Experimental Validation of Shrinkage Predictions for Injection Molded Products
https://doi.org/10.3139/217.980058

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. J. A. Biesenberger, G. Astarita, D. C. Bogue
  5. Screw Extrusion/Mixing
  6. Modeling Solids Conveying in Polymer Extruders
  7. Comparison between LDPE Conventional and Autothermal Extrusion Characteristics
  8. Transesterification of Ethylene Acetate Copolymer in a Twin Screw Extruder
  9. Stabilising the Structure of HDPE by the Use of Highly-dispersed Mixture of Fe/FeO
  10. Pumping Characteristics of an Intermeshing Co-rotating Twin Screw Extruder
  11. Flow Behaviour of Blends of Poly(ethylene-Co-Acrylic Acid) and Epoxidised Natural Rubber
  12. Die Extrusion
  13. Rheological Behaviour of HDPE/PA 11 Blends
  14. Melt Flow Properties of LDPE/HDPE Blends in Capillary Extrusion
  15. Fibers and Film
  16. Rheological Behaviour of LLDPE/LDPE Blends under Elongational Deformation
  17. Processing/Structure Relationships of Mica-Filled PE-Films with Low Oxygen Permeability
  18. On the Charge State of Melt-Blown Polymer Materials
  19. Temperature Measuring in Plastics Processing with Infrared Radiation Thermometers
  20. Comparative Study of Structure Development in Melt Spinning Polyolefin Fibers
  21. Moulding
  22. Sintering Rheology of Semi-Crystalline Polymers
  23. Molding
  24. Melt Flow Instabilities of Filled HDPE
  25. Experimental Validation of Shrinkage Predictions for Injection Molded Products
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