Microstructural Evolution of PP/EPDM/Organoclay Nanocomposites in a Twin Screw Extruder
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R. Khosrokhavar
Abstract
The offline Microstructure of nanocomposites based on Poly-Propylene (PP), Ethylene-Propylene Diene Monomer (EPDM) and Cloisite 15A along the twin screw extruder barrel was investigated by X-Ray diffraction, Transmission Electron Microscopy (TEM) and rheological measurements. To assess the effect of screw zones, the microstructural development of nanocomposites along the screw was investigated. Accordingly, dead-stop experiment samples were taken at four different positions of the extruder after abruptly stopping the machine and opening the barrel. Effect of clay loading on the evolution of morphology in the extruder was studied. X-Ray diffraction results showed that at lower clay contents (up to ∼7 wt.%), the intercalation process is independent of screw geometry and accomplishes as soon as the matrix is melted; and on the other hand, excessive melt mixing of the samples containing higher clay loadings (10 wt.%) might lead to the collapse of silicate layers and consequently poor degrees of intercalation/exfoliation. Results were confirmed by TEM micrographs and also XRD patterns of the nanocomposites sensitively detecting the microstructural changes of the samples.
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Articles in the same Issue
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- Thermal Properties and Electrical Conductivity of Graft Copolymers from Polystyrene and Polyvinyl Propionate with Polyaniline
- Opto-thermo-mechanical Characterization for Polyester and Polyamide Surgical Sutures
- Study on Creep Behavior of PP/CaCO3 Molded by Vibration Injection Molding at Different Vibration Frequency and Vibration Pressure
- Investigation of the Moldability Parameters of PEG Based Steatite Feedstocks by Powder Injection Molding
- Factorial Optimisation of the Effects of Melt Spinning Conditions on Biodegradable As-spun Aliphatic-Aromatic Co-Polyester Fibres
- Erosion Behavior of Glass-epoxy Composites Filled with SiC from Bamboo Leaf
- Modelling Behaviour of PET for Stretch and Micro-Blow Moulding Applications Using an Elasto-Visco-Plastic Material Model
- Melting in a Single Screw Extruder: Experiments and 3D Finite Element Simulations
- Poly(ethylene-co-butylene)-b-(styrene-ran-maleic anhydride)2 Compatibilizers via Nitroxide Mediated Radical Polymerization
- Formation and Biodegradation of Polyethylene-based Electret Films
- Microstructural Evolution of PP/EPDM/Organoclay Nanocomposites in a Twin Screw Extruder
- Effect of Processing Conditions on Properties of PET/Clay Nanocomposite Films
- Rapid Communications
- The Use of Apparent Yield Stress to Characterize Exfoliation in Polymer Nanocomposites
- PPS-News
- PPS News
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Thermal Properties and Electrical Conductivity of Graft Copolymers from Polystyrene and Polyvinyl Propionate with Polyaniline
- Opto-thermo-mechanical Characterization for Polyester and Polyamide Surgical Sutures
- Study on Creep Behavior of PP/CaCO3 Molded by Vibration Injection Molding at Different Vibration Frequency and Vibration Pressure
- Investigation of the Moldability Parameters of PEG Based Steatite Feedstocks by Powder Injection Molding
- Factorial Optimisation of the Effects of Melt Spinning Conditions on Biodegradable As-spun Aliphatic-Aromatic Co-Polyester Fibres
- Erosion Behavior of Glass-epoxy Composites Filled with SiC from Bamboo Leaf
- Modelling Behaviour of PET for Stretch and Micro-Blow Moulding Applications Using an Elasto-Visco-Plastic Material Model
- Melting in a Single Screw Extruder: Experiments and 3D Finite Element Simulations
- Poly(ethylene-co-butylene)-b-(styrene-ran-maleic anhydride)2 Compatibilizers via Nitroxide Mediated Radical Polymerization
- Formation and Biodegradation of Polyethylene-based Electret Films
- Microstructural Evolution of PP/EPDM/Organoclay Nanocomposites in a Twin Screw Extruder
- Effect of Processing Conditions on Properties of PET/Clay Nanocomposite Films
- Rapid Communications
- The Use of Apparent Yield Stress to Characterize Exfoliation in Polymer Nanocomposites
- PPS-News
- PPS News