Melt Strength and Thermal Properties of Organic Peroxide Modified Virgin and Recycled HDPE
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Abstract
Commercial blow moulding grade recycled high density polyethylene (r-HDPE) and blow moulding grade virgin HDPE were reactively extruded with various compositions (0.00 to 0.15 %) of different peroxides in a twin screw extruder. The aim was to improve the melt strength properties of a blow moulding grade HDPE homopolymer – a polymer resin comprising a significant part of the post consumer recycled plastic stream in Australia. Melting behaviour and crystallinity were investigated by modulated differential scanning calorimetry (MDSC). Uniaxial melt extensional (UME) measurement of the modified materials was carried out using Göttfert Rheotens melt strength tester to measure melt quality of the material. Melt strength and zero shear viscosity were also measured to assess and correlate changes in melt properties due to peroxide modification. Melt strength and zero shear viscosity of both recycled and virgin material were enhanced with the increase in composition of peroxide. However, addition of peroxide also brought with it flow instabilities like draw resonance and necking, both of which lead to limitations in polymer processing.
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© 2008, Carl Hanser Verlag, Munich
Articles in the same Issue
- Contents
- Contents
- Editorial
- Special Issue on Asian Workshop on Polymer Processing 2006
- Invited Papers
- Hydrophobicity Improvement of PET Fabrics after SF6 Plasma Treatment
- Improving the Mechanical Properties of ENR/NBR Blends via Masterbatches with Initial Accelerator Concentration Gradients
- Breathable Film from Reactive Processing of LLDPE/NR Blends with ENR and Maleic Anhydride
- Preventing Film Blocking and Optimizing Haze of Metallocene PE Blown Films Through Blending with Rigid Polymers
- Effects of Hot-drawing and Annealing on the Morphology and Mechanical Properties of Biodegradable Polyester Monofilament Fibers
- Rheological Modification of LLDPE Through Reactive Processing with Peroxide
- The Effect of CO2 Pressure on Viscoelasticity of LDPE
- Development of Bicomponent Spunbond Nonwoven Webs Consisting of Ultra-fine Splitted Fibers
- Interfacial Characteristics of Film Insert Moldings Consisting of Semicrystalline and Amorphous Polymers
- Regular Contributed Articles
- Erosive Wear Assesment of Glass Reinforced Polyester-Flyash Composites Using Taguchi Method
- Melt Strength and Thermal Properties of Organic Peroxide Modified Virgin and Recycled HDPE
- Three-Dimensional Numerical Simulation of Segregation in Powder Injection Molding
- An Experimental Study on the Pickout of Scaled-up Gravure Cells
- Mechanical and Thermal Propertiesof Fly Ash/Reclaimed Rubber Powder Composites Improved by KH-550 Coupling Agent
- Melt Processability and Foam Suppression of High Molecular Weight Polyethylenes Plasticized with Supercritical Carbon Dioxide
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Editorial
- Special Issue on Asian Workshop on Polymer Processing 2006
- Invited Papers
- Hydrophobicity Improvement of PET Fabrics after SF6 Plasma Treatment
- Improving the Mechanical Properties of ENR/NBR Blends via Masterbatches with Initial Accelerator Concentration Gradients
- Breathable Film from Reactive Processing of LLDPE/NR Blends with ENR and Maleic Anhydride
- Preventing Film Blocking and Optimizing Haze of Metallocene PE Blown Films Through Blending with Rigid Polymers
- Effects of Hot-drawing and Annealing on the Morphology and Mechanical Properties of Biodegradable Polyester Monofilament Fibers
- Rheological Modification of LLDPE Through Reactive Processing with Peroxide
- The Effect of CO2 Pressure on Viscoelasticity of LDPE
- Development of Bicomponent Spunbond Nonwoven Webs Consisting of Ultra-fine Splitted Fibers
- Interfacial Characteristics of Film Insert Moldings Consisting of Semicrystalline and Amorphous Polymers
- Regular Contributed Articles
- Erosive Wear Assesment of Glass Reinforced Polyester-Flyash Composites Using Taguchi Method
- Melt Strength and Thermal Properties of Organic Peroxide Modified Virgin and Recycled HDPE
- Three-Dimensional Numerical Simulation of Segregation in Powder Injection Molding
- An Experimental Study on the Pickout of Scaled-up Gravure Cells
- Mechanical and Thermal Propertiesof Fly Ash/Reclaimed Rubber Powder Composites Improved by KH-550 Coupling Agent
- Melt Processability and Foam Suppression of High Molecular Weight Polyethylenes Plasticized with Supercritical Carbon Dioxide
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts