Polymer Engineering Faculty Research
Title
Structural Gradients Developed in Injection Molded Syndiotactic Polystyrene
Document Type
Article
Publication Date
5-2-1996
Abstract
In this experimental research, we investigated the influence of processing history on the development of structural gradients in injection-molded syndiotactic polystyrene (sPS). The structures formed during injection molding of this slow-to-crystallize polymer are explained by the complex interplay between the mechanical history of the sample and the cooling conditions dictated by such variables as mold temperature, cavity geometry, and injection speed. When crystallized under shear, sPS exhibits unusually high preferential chain orientation along the flow direction; this orientation gradually decreases toward the core. The mechanical properties are related to the degree of orientation and crystallinity. © 1996 John Wiley & Sons, Inc.
Publication Title
Journal of Applied Polymer Science
Volume
60
Issue
5
First Page
669
Last Page
691
Recommended Citation
Ulcer, Y.; Cakmak, Mukerrem; Miao, J.; and Hsiung, C. M., "Structural Gradients Developed in Injection Molded Syndiotactic Polystyrene" (1996). Polymer Engineering Faculty Research. 460.
https://ideaexchange.uakron.edu/polymerengin_ideas/460