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Rheological Modification of LLDPE Through Reactive Processing with Peroxide

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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 presence of long-chain branching provides advantageous properties to a molten polymer in film production, especially for a fast growing commodity plastic such as polyethylene. Besides the innovation of polymerization, the most attractive method to tailor the molecular structure is peroxide modification via reactive processing which is the post-reactor technique. By this process, it can achieve the enhancement of ability of the melt to be drawn or stretched during the film processing due to branching. However, to avoid the undesired excess of macroscopic molecular network, which may cause defects in the film product, a small quantity of peroxide initiator was used to modify the base resin. The rheological properties, as related to molecular characteristics, were investigated using a capillary rheometer. Rheological analysis of the products modified by different peroxide addition methods was of interest as changes in rheological properties depend markedly on the efficiency of incorporating and mixing the peroxide into the polymer. Process parameters (including mixing temperature, peroxide quantity, and mixing speed), which appear to be responsible for the molecular characteristics alteration, were considered in order to produce materials with preferred rheological properties.

∗ Mail address: Rathanawan Magaraphan, Polymer Processing and Polymer Nanomaterials Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, 10330 Thailand. E-mail:

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Received: 2007-1-9
Accepted: 2008-1-26
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/10.3139/217.2026

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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