Rheology and Foaming of Long-Chain Branched Ethylene-Tetrafluoroethylene Copolymer and Its Blends
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E. Nishi
Abstract
The long-chain branched ethylene-tetrafluoroethylene copolymer (B-ETFE) was synthesized by radical polymerization using ethylene, tetrafluoroethylene, termonomer, and a very small amount of divinyl monomer. We studied melt rheology under shear and elongational flow, and foamability for B-ETFE, comparing with conventional linear ETFE. Addition of a small amount of the divinyl monomer had a considerable impact on the melt rheology of ETFE and its blends. The observed non-linear elongational behavior and emergence of long relaxation time components can be explained by long-chain branching in the modified ETFE. B-ETFE and its blends showed excellent foaming processability: uniform and smaller cell sizes and much higher cell number densities than those of linear ETFE. To the best of our knowledge, this is the first report of the enhancement of the melt rheology of ETFE from the viewpoint of modification of its molecular architecture.
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© 2018, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Influence of Glass Microsphere Filler on the Rheological Behavior of an Epoxy Resin
- Morphology and Mechanical Properties of Itaconic Anhydride Grafted Poly(lactic acid) and Thermoplastic Protein Blends
- An Effective α/β Nucleating Agent Compoundfor the Preparation of Polypropylene
- Experimental and Theoretical Study on Screw Filling in Starve Fed Single Screw Extruders
- The Role of Extrusion Conditions on the Mechanical Properties of Thermoplastic Protein
- Investigation of the Behavior of Organo-Metallic Compound and Its Influence on Polyurethane
- A Novel Technique for Manufacturing Polypropylene Based Functionally Graded Materials
- Development of a Segmented Temperature Control for Targeted Solidification in Injection Molding
- Rheology and Foaming of Long-Chain Branched Ethylene-Tetrafluoroethylene Copolymer and Its Blends
- Optical and Structural Characteristics of CdSe/PMMA Nanocomposites
- Crystallization Behavior of Polyvinyl Alcohol with 1,2-Diol Side-Chains
- Effects of Mean Particle Size and Addition Weight Percentage of CaCO3 on Selected Rheological Properties of Filled LDPE
- Using a Visualization Mold to Discuss the Influence of Gas Counter Pressure and Mold Temperature on the Fountain Flow Effect
- Recycling of Virgin and Post-Consumer Polypropylene and High Density Polyethylene
- An Open-Source Framework for the Computer Aided Design of Complex Profile Extrusion Dies
- Rapid Communications
- Investigation of the Mechanical and Thermal Properties of LFR PA66 with Graphene Coating on Fibre Surface
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Influence of Glass Microsphere Filler on the Rheological Behavior of an Epoxy Resin
- Morphology and Mechanical Properties of Itaconic Anhydride Grafted Poly(lactic acid) and Thermoplastic Protein Blends
- An Effective α/β Nucleating Agent Compoundfor the Preparation of Polypropylene
- Experimental and Theoretical Study on Screw Filling in Starve Fed Single Screw Extruders
- The Role of Extrusion Conditions on the Mechanical Properties of Thermoplastic Protein
- Investigation of the Behavior of Organo-Metallic Compound and Its Influence on Polyurethane
- A Novel Technique for Manufacturing Polypropylene Based Functionally Graded Materials
- Development of a Segmented Temperature Control for Targeted Solidification in Injection Molding
- Rheology and Foaming of Long-Chain Branched Ethylene-Tetrafluoroethylene Copolymer and Its Blends
- Optical and Structural Characteristics of CdSe/PMMA Nanocomposites
- Crystallization Behavior of Polyvinyl Alcohol with 1,2-Diol Side-Chains
- Effects of Mean Particle Size and Addition Weight Percentage of CaCO3 on Selected Rheological Properties of Filled LDPE
- Using a Visualization Mold to Discuss the Influence of Gas Counter Pressure and Mold Temperature on the Fountain Flow Effect
- Recycling of Virgin and Post-Consumer Polypropylene and High Density Polyethylene
- An Open-Source Framework for the Computer Aided Design of Complex Profile Extrusion Dies
- Rapid Communications
- Investigation of the Mechanical and Thermal Properties of LFR PA66 with Graphene Coating on Fibre Surface
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts