Structure Development in Melt Spinning Polypropylene-EPM Blends and Dynamically Vulcanized Polyolefin TPEs
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Abstract
Polypropylene blends, both mechanical blends and a dynamically vulcanized blend, have been melt spun into fibers. Melt spinning was carried out through air and in ice water. Melt spun filaments were characterized by wide angle x-ray diffraction (WAXS), birefringence and differential scanning calorimetry (DSC) measurements. Generally, the polypropylene crystalline orientation-spinline stress relationship is the same for the homoploymer, the blends and the dynamic vulcanizate. However, the blends and the dynamic vulcanizate have much lower birefringence apparently due to a lack of orientation in the rubber phase. It was shown that the PP contribution to the birefringence for all the systems is the same at the same spinline stress.
© 1999, Carl Hanser Verlag, Munich
Articles in the same Issue
- Editorial
- First of a Series: Pioneering Polymer Industry Developments: Bayer and the First Synthetic RubberFirst of a Series
- Internal Mixer
- Modeling Non-isothermal Mixing in a Rotor Mixer
- Screw Extrusion/Mixing
- Chrome Nitride Coatings for Applications in Plastics Processing
- Using Computational Fluid Dynamics to Investigate the Flow of a Viscous Fluid in a Cavity with Oscillating Boundaries
- Simulation of Flow in an Intermeshing Modular Counter-rotating Twin Screw Extruder: Non-Newtonian and Non-Isothermal Behavior
- Reactive Extrusion
- Bulk and Dispersed Phase Polymerization of Urethane in Twin Screw Extruders
- Die Extrusion
- Wire Coating by Drawdown of an Extruded Annular Melt
- Fibers and Films
- Structure Development in Melt Spinning Polypropylene-EPM Blends and Dynamically Vulcanized Polyolefin TPEs
- Simulation of Blown-Film Process Taking Account of Cooling-air Effect
- Molding
- Analysis of Shrinkage Development of Injection Moulded PS Samples
- Optimization of the Weldline Strength in Gas-assist Injection Molded Thermoplastic
- Injection Velocity Control Using A Self-tuning Adaptive Controller
Articles in the same Issue
- Editorial
- First of a Series: Pioneering Polymer Industry Developments: Bayer and the First Synthetic RubberFirst of a Series
- Internal Mixer
- Modeling Non-isothermal Mixing in a Rotor Mixer
- Screw Extrusion/Mixing
- Chrome Nitride Coatings for Applications in Plastics Processing
- Using Computational Fluid Dynamics to Investigate the Flow of a Viscous Fluid in a Cavity with Oscillating Boundaries
- Simulation of Flow in an Intermeshing Modular Counter-rotating Twin Screw Extruder: Non-Newtonian and Non-Isothermal Behavior
- Reactive Extrusion
- Bulk and Dispersed Phase Polymerization of Urethane in Twin Screw Extruders
- Die Extrusion
- Wire Coating by Drawdown of an Extruded Annular Melt
- Fibers and Films
- Structure Development in Melt Spinning Polypropylene-EPM Blends and Dynamically Vulcanized Polyolefin TPEs
- Simulation of Blown-Film Process Taking Account of Cooling-air Effect
- Molding
- Analysis of Shrinkage Development of Injection Moulded PS Samples
- Optimization of the Weldline Strength in Gas-assist Injection Molded Thermoplastic
- Injection Velocity Control Using A Self-tuning Adaptive Controller
