Rheological behavior and flow induced fiber orientation in simple flows of short glass fiber reinforced polypropylene melts were studied. Transient and steady state properties and in situ fiber orientation distribution were measured in simple shear flow, poiseuille flow, small amplitude oscillatory shear and uni-axial extensional flow. Strong correlation is found between the flow induced changes in fiber orientation distribution and measured bulk rheological properties. / An extension of suspension theories for dilute systems is proposed, where multi-particle interactions are modeled as a randomizing process. The effect of non-Newtonian fluid properties is incorporated at the slow flow limit through its effect on the fiber orientation only. Model predictions for simple shear demonstrate the strong correlation between the changes in fiber orientation and bulk rheological properties. Model predictions are in qualitative agreement with experimental observations in simple shear flow.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.75952 |
| Date | January 1989 |
| Creators | Mutel, Ahmet Turgut |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Chemical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000910033, proquestno: AAINL52434, Theses scanned by UMI/ProQuest. |
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