Polystyrene/Phosphonium Organoclay Nanocomposites by Melt Compounding
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Abstract
Polystyrene-montmorillonite nanocomposites were prepared by melt compounding, using several ammonium and phosphonium organoclays. Melt processing was carried out in a twin screw extrusion system, specially modified to produce improved dispersion and longer residence time. The effect of molecular weight of polystyrene on clay dispersion and property enhancement was evaluated. Nanocomposite structure was characterized by wide angle x-ray diffraction (WAXD) and transmission electron microscopy (TEM). Thermal stability and mechanical and barrier properties were also determined. The quality of dispersion of organically modified montmorillonite depended on the molecular weight of the polystyrene resin. Barrier properties were measured and compared to predictions of permeability models available in the literature. Clay dispersion and property enhancement were explained in relation to the surface characteristics of the organoclays, and the work of adhesion at the polystyrene-clay interface was correlated with the tensile modulus of the nanocomposites.
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Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- The Dynamic Apparent Viscosity of Polymer Melts During Pulsatile Extrusion Flow with Vibration Force Field
- Generation of Microcellular Foams by Supercritical Carbon Dioxidein a PMMA Compound
- Influence of Uniaxial Extension on the Mechanical Properties of PET and PEN Films
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- Non-Isothermal Simulation of the Film Blowing Process Using Multi-Mode Extended Pom-Pom Model
- Flow Analysis of Flat Spiral Dies and Comparison with Cylindrical Spiral Mandrel Dies
- Development of Polymer Blend Morphology along an Extruder with Different Screw Geometries
- A Mechanical Model for Stress Developmentin PA12 Tube Extrusion
- Shrinkage Analysis on Convex Shellby Injection Molding
- Melting Mechanism of Thermoplastic Elastomers and Comparison to Polyolefin Thermoplastic Melting Studies in a Single Screw Extruder
- Thermal Degradation of Meta- and Para-Aramid Fibers in Different Atmospheres
- Experimental Studies on Screw Characteristics in Closely Intermeshing Counter-rotating Twin Screw Extruder
- Experimental Analysis of Heat Transfer in Rotational Molding Process
- Polyetheretherketone Films with Low Thermal Expansion for Flexible Printed Circuit Boards
- Experimental Study and Modeling of Flow Behavior and Orientation Kinetics of Layered Silicate/Polypropylene Nanocomposites in Start-up of Shear Flows
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- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- The Dynamic Apparent Viscosity of Polymer Melts During Pulsatile Extrusion Flow with Vibration Force Field
- Generation of Microcellular Foams by Supercritical Carbon Dioxidein a PMMA Compound
- Influence of Uniaxial Extension on the Mechanical Properties of PET and PEN Films
- Analysis of the Isothermal Compression in Nanoimprint Lithography Assuming a Power-Law Fluid
- Non-Isothermal Simulation of the Film Blowing Process Using Multi-Mode Extended Pom-Pom Model
- Flow Analysis of Flat Spiral Dies and Comparison with Cylindrical Spiral Mandrel Dies
- Development of Polymer Blend Morphology along an Extruder with Different Screw Geometries
- A Mechanical Model for Stress Developmentin PA12 Tube Extrusion
- Shrinkage Analysis on Convex Shellby Injection Molding
- Melting Mechanism of Thermoplastic Elastomers and Comparison to Polyolefin Thermoplastic Melting Studies in a Single Screw Extruder
- Thermal Degradation of Meta- and Para-Aramid Fibers in Different Atmospheres
- Experimental Studies on Screw Characteristics in Closely Intermeshing Counter-rotating Twin Screw Extruder
- Experimental Analysis of Heat Transfer in Rotational Molding Process
- Polyetheretherketone Films with Low Thermal Expansion for Flexible Printed Circuit Boards
- Experimental Study and Modeling of Flow Behavior and Orientation Kinetics of Layered Silicate/Polypropylene Nanocomposites in Start-up of Shear Flows
- Polystyrene/Phosphonium Organoclay Nanocomposites by Melt Compounding
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts