Laminar morphology of high density polyethylene (HDPE)/polyamide-6 (PA-6) blends was obtained, for the first time, in a co-rotating twin screw extruder. The morphology analysis in the interior of the adapter, which connects the extruder with a slit die, revealed that, under specific processing conditions, it is possible to produce layers of PA-6 in the end of the screw zone of the extruder. These layers were visible at very low magnification (6.7X). It was also observed that a high adapter converging angle (70°) produced breakup of the layers, due to the high elongational and shear flow. / The micrographs of the extruded final products showed distributed layers across the sample thickness are along the flow direction. The effect of design variables such as adapter angle and die gap on the final product morphology was studied. The effect of processing variables, including temperature profile, feed rate, and screw speed, were evaluated. speed, were evaluated. (Abstract shortened by UMI.)
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.20925 |
| Date | January 1998 |
| Creators | Rodriguez Veloz, Oscar Alberto. |
| Contributors | Kamal, M. R. (advisor) |
| 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 | Master of Engineering (Department of Chemical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001641608, proquestno: MQ50656, Theses scanned by UMI/ProQuest. |
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