Study on the Bleeding Mechanism of Slip Agents in a Polypropylene Film using Molecular Dynamics
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M. Wakabayashi
Abstract
The bleeding (internal transport) process of additives in a polypropylene film under atmospheric pressure was investigated. The experimental results were explained more precisely by a new model assuming the two-step transport between the amorphous and crystalline regions. The diffusion coefficient of a higher fatty acid such as behenic acid (docosanoic acid) in isotactic polypropylene film and that of higher fatty acid amides such as erucamaide (13-cis-docosenamide) in ethylene copolymerized polypropylene film were determined at 40 and 50°C respectively. The difference between the diffusion coefficients of three slip agents in a polypropylene film at 50°C was explained using a molecular dynamics simulation in which self-association of the slip agent molecules by hydrogen bonding was considered.
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© 2009, Carl Hanser Verlag, Munich
Artikel in diesem Heft
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Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Modeling the Temperature Development of Wall-slipping Polymers in Single-screw Channels
- A Novel Dilatometer for PVT Measurements of Polymers at High Cooling – and Shear Rates
- Analysis of Heat Transfer in PVC Profiles during the Extrusion Calibration/Cooling Step
- Study on the Bleeding Mechanism of Slip Agents in a Polypropylene Film using Molecular Dynamics
- A Direct 3D Numerical Simulation Code for Extrusion and Mixing Processes
- The Resarch for Asphalt Modified with Phosphorus Trichloride/SBS
- The Effect of Bead Vacuum on Slot Die Coating
- Predicting the Yield Stress of Polymer Glasses Directly from Processing Conditions: Application to Miscible Systems
- Numerical Simulation of a Thermoviscoelastic Frictional Problem with Application to the Hot-Embossing Process for Manufacturing of Microcomponents
- A Design to Study Flow Induced Crystallization in a Multipass Rheometer
- Modeling of Melt Conveying in a Novel Screw-Nested Extruder
- Rheological and Thermal Properties of a Model System for PIM
- PPS-News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts