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A Novel Rheological Microscope for Flow Studies of Thermotropic Polymers and Polymer Blends: Droplet Deformation

Published online by Cambridge University Press:  10 February 2011

P. T. Mather ,
H. R. Stüber ,
K. P. Chaffee ,
T. S. Haddad ,
A. Romo-Uribe  and
J. D. Lichtenhan
P. T. Mather
Affiliation:
Propulsion Sciences Division, USAF Phillips Laboratory, Edwards AFB CA 93524
H. R. Stüber
Affiliation:
Physics Machine Shop, U.C. Santa Barbara, Santa Barbara, CA 93106
K. P. Chaffee
Affiliation:
Propulsion Sciences Division, USAF Phillips Laboratory, Edwards AFB CA 93524
T. S. Haddad
Affiliation:
Hughes STX Corporation, Phillips Laboratory, Edwards AFB CA 93524
A. Romo-Uribe
Affiliation:
Propulsion Sciences Division, USAF Phillips Laboratory, Edwards AFB CA 93524
J. D. Lichtenhan
Affiliation:
Propulsion Sciences Division, USAF Phillips Laboratory, Edwards AFB CA 93524
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Abstract

We have recently begun investigating the rheological behavior of blends containing thermotropic liquid crystalline polymers (LCPs) and isotropic polymers. To aid us in our studies, we have designed a unique instrument for simultaneous visualization of morphology evolution and rheological measurements. Rectilinear shear is used, with a top glass bar being translated relative to a fixed bottom glass bar. The sample is heated by conduction from mica heaters embedded in the substrate materials supporting the bounding glass bars. Shear forces are obtained by measuring the (small) deflection of the bottom glass bar and heating assembly which is designed to be slightly compliant in the flow direction while rigid in direction normal to the sample.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 425: Symposium I – Liquid Crystals for Advanced Technologies , 1996 , 137
Copyright
Copyright © Materials Research Society 1996

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References

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