Equation of State for Pure Polymeric Fluids Theory Based on An Improved Hole and Cell Model
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N. H. Wang
Abstract
A theoretical equation of state (EOS) for chain molecule fluids is presented based on an improved hole and cell model in which the geometries of both the cells and the mers are defined as the dodecahedrons and reasonably related with the Lennard-Jones potential. Furthermore the number of configurations is treated to contribute to the EOS by means of minimizing the Helmholtz free energy to determine the cell size. This study may be regarded as the improved theories about the hole and cell model proposed by Simha et al. and the hole model by Sanchez and Lacombe. The present EOS has three characteristic parameters per pure fluid, which can lead to a corresponding-state principle for pure polymeric fluids. The validity and applicability of the equation were investigated by correlating the experimental PVT data for some common polymers and predicting the thermal expansion coefficient and isothermal compressibility of PVAc.
© 1994, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Ninth in a Series: Mitsubishi Heavy Industries: Road to a High Technology Giant
- Internal Mixers
- Two-Dimensional Dynamic Study of the Distributive Mixing in an Internal Mixer
- Screw Extrusion
- Design of Tightly Intermeshing Co-Rotating Twin Screw Extruders
- Devolatilization of Polymer Solutions
- Flow Mechanisms, Material Distributions and Phase Morphology Development in a Modular Intermeshing Counter-Rotating Twin Screw Extruder of Leistritz Design
- 3-D Flow Simulations of a Cavity Transfer Mixer
- Die Extrusion
- Flow and Fiber Orientation Calculations in Reinforced Thermoplastic Extruded Tubes
- Fiber Spinning
- Orientation Evolution in Convergent-Divergent Dies
- Molding
- Unsteady Flow of Semi-Concentrated Fiber Suspensions in Compression Molding
- Equation of State for Pure Polymeric Fluids Theory Based on An Improved Hole and Cell Model
- Residual Stresses in Quenched and Injection Moulded Products
- Image Simulation and Evaluation of Fiber Orientation Distribution
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Ninth in a Series: Mitsubishi Heavy Industries: Road to a High Technology Giant
- Internal Mixers
- Two-Dimensional Dynamic Study of the Distributive Mixing in an Internal Mixer
- Screw Extrusion
- Design of Tightly Intermeshing Co-Rotating Twin Screw Extruders
- Devolatilization of Polymer Solutions
- Flow Mechanisms, Material Distributions and Phase Morphology Development in a Modular Intermeshing Counter-Rotating Twin Screw Extruder of Leistritz Design
- 3-D Flow Simulations of a Cavity Transfer Mixer
- Die Extrusion
- Flow and Fiber Orientation Calculations in Reinforced Thermoplastic Extruded Tubes
- Fiber Spinning
- Orientation Evolution in Convergent-Divergent Dies
- Molding
- Unsteady Flow of Semi-Concentrated Fiber Suspensions in Compression Molding
- Equation of State for Pure Polymeric Fluids Theory Based on An Improved Hole and Cell Model
- Residual Stresses in Quenched and Injection Moulded Products
- Image Simulation and Evaluation of Fiber Orientation Distribution
