Melt Intercalation in Montmorillonite/Polystyrene Nanocomposites
-
N. Nassar
Abstract
Atactic polystyrene (PS) was used to study the effect of flow field (shear and/or elongational) on the intercalation of polymer/clay nanocomposites (PNC). Three grades of (PS), with different molecular weights, were compounded with an ammonium-modified montmorillonite (Cloisite 10A) in a twin-screw extruder (TSE). The compounds were subsequently fed to a single screw extruder, fitted with one of three specially designed torpedo-attachments. The attachments were designed to provide combinations of different levels of shear and elongational deformations. The resins, TSE compounds, and final PNC’s were characterized for the degree of intercalation, degradation, rheological behavior, and mechanical properties. The data showed that the thermal decomposition of the quaternary ammonium intercalant caused severe damage to both PNC components: a collapse of the organoclay interlayer spacing, and the thermo-oxidative degradation of PS. In spite of these detrimental effects, the attachment employing combined elongational and shear flow resulted in generally larger gallery spacing and more improvement of the mechanical properties than the other two attachments.
Acknowledgments
The assistance of Dr. Kenneth Cole, National Research Council of Canada, in obtaining and interpreting the FTIR spectra is gratefully acknowledged. Financial support was received for the Natural Sciences and Engineering Research Council of Canada.
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© 2005 Hanser Publishers, Munich
Articles in the same Issue
- Contents
- Regular Contributed Articles
- An Improvement on Design of Sheet Extrusion Dies
- Organic-Inorganic Hybrid Material Synthesis by on Line Coupling Twin Screw Extruder with a Microwave Oven
- Water Penetration Stability in Water Assisted Injection Molded Symmetric Ribs
- A New Plasticating Model for Amorphous and Semi-crystalline Polymers in Single Screw Extruders
- Simultaneous Biaxial Stretching of Polypropylene Resins of Varying Tacticity
- Optimization of a Flat Die Including Elongational Viscosity Effects
- Experimental Study on Factors Influencing Throughput Rate and Process of Polymer-Mineral Filler Mixing in a Twin Screw Extruder
- 3D Finite Element Simulation of Processing of Generalized Newtonian Fluids in Counter-rotating and Tangential TSE and Die Combination
- Simulation of Heat Transfer in Laser Transmission Welding
- Influence of Power Law and Isothermal Simplification on the Accuracy in Single Screw Extrusion
- Melt Intercalation in Montmorillonite/Polystyrene Nanocomposites
- Experimental Investigation of the Effect of the Bubble Cone on the Cooling Jets used in the Blown Film Manufacturing Process
- Molding of Thin Sheets Using Impact Micro-injection Molding
- Rapid communications
- Ultrasonic Vibration Hot Embossing
- PPS news
- PPS news
- Seikei-kakou abstracts
- Seikei-kakou abstracts
Articles in the same Issue
- Contents
- Regular Contributed Articles
- An Improvement on Design of Sheet Extrusion Dies
- Organic-Inorganic Hybrid Material Synthesis by on Line Coupling Twin Screw Extruder with a Microwave Oven
- Water Penetration Stability in Water Assisted Injection Molded Symmetric Ribs
- A New Plasticating Model for Amorphous and Semi-crystalline Polymers in Single Screw Extruders
- Simultaneous Biaxial Stretching of Polypropylene Resins of Varying Tacticity
- Optimization of a Flat Die Including Elongational Viscosity Effects
- Experimental Study on Factors Influencing Throughput Rate and Process of Polymer-Mineral Filler Mixing in a Twin Screw Extruder
- 3D Finite Element Simulation of Processing of Generalized Newtonian Fluids in Counter-rotating and Tangential TSE and Die Combination
- Simulation of Heat Transfer in Laser Transmission Welding
- Influence of Power Law and Isothermal Simplification on the Accuracy in Single Screw Extrusion
- Melt Intercalation in Montmorillonite/Polystyrene Nanocomposites
- Experimental Investigation of the Effect of the Bubble Cone on the Cooling Jets used in the Blown Film Manufacturing Process
- Molding of Thin Sheets Using Impact Micro-injection Molding
- Rapid communications
- Ultrasonic Vibration Hot Embossing
- PPS news
- PPS news
- Seikei-kakou abstracts
- Seikei-kakou abstracts
