@inproceedings{c7f320fb9c9d4eb0a8355f88f69255a4,
title = "In situ X-ray scattering measurements and polydomain simulations of molecular orientation development during injection molding of liquid crystalline polymers",
abstract = "We report a coordinated experimental/computational study of injection molding of commercial thermotropic LCPs. In situ synchrotron x-ray scattering, combined with a customized injection molding apparatus, is used to track development of molecular orientation during mold filling for commercial LCPs in two simple plaque mold geometries: square and T-shaped. While geometrically simple, these flows are characterized by complex inhomogenous mixtures of shear and extension, which influence orientation development. Use of high brilliance synchrotron radiation coupled with a high speed CCD detector provides sufficient time resolution (∼12 frames per second) to resolve transient orientation dynamics during mold filling. The experiments are coordinated with process simulations performed using commercial mold filling software. A close analogy between the Folgar-Tucker fiber orientation model and the Larson-Doi polydomain model for textured liquid crystalline polymers is exploited to allow testing of Larson-Doi model predictions in injection molding processing.",
keywords = "In situ scattering, Injection molding, Liquid crystalline polymers, Polydomain simulation, Thermotrope",
author = "Jun Fang and Burghardt, {Wesley R.} and Bubeck, {Robert A.}",
year = "2008",
doi = "10.1063/1.2964705",
language = "English (US)",
isbn = "9780735405493",
series = "AIP Conference Proceedings",
pages = "39--41",
booktitle = "The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting",
note = "15th International Congress on Rheology ; Conference date: 03-08-2008 Through 08-08-2008",
}