Hostname: page-component-669899f699-rg895 Total loading time: 0 Render date: 2025-05-03T16:26:48.901Z Has data issue: false hasContentIssue false
  • English
  • Français

Physical Studies of A Series of Main-Chain Liquid CrystallinePolymers With Long Soft Segment

Published online by Cambridge University Press:  15 February 2011

Bing Wu ,
C. Peter Lillya  and
Richard S. Stein
Bing Wu
Affiliation:
University of Massachusetts, Chemistry Department, Amherst, MA 01003
C. Peter Lillya
Affiliation:
University of Massachusetts, Chemistry Department, Amherst, MA 01003
Richard S. Stein
Affiliation:
University of Massachusetts, Chemistry Department, Amherst, MA 01003
Get access

Abstract

A series of Main-chain liquid crystalline polymers with long andpolydisperse soft segments has been synthesized. The thermal properties ofthese polymers have been characterized by differential scanning calorimetry,optical microscopy and wide angle X-ray diffraction. Unexpectedly, thesepolymers have a strong tendency to form purely smectic Mesophases. Thedegree of ordering of these polymeric mesophases is Much higher than that ofthe mesophase formed by a low molecular weight Model compound with the sameMesogen. The soft segment length effects on thermal behavior of suchsegmented copolymers have been elucidated. A semi-quantitative theory hasbeen formulated to interpret these observations. A phase diagram relatingthermal properties to soft segment length has been proposed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 321: Symposium E – Crystallization and Related Phenomena in Amorphous Materials—Ceramics, Metals, Polymers, and Semiconductors , 1993 , 87
Copyright
Copyright © Materials Research Society 1994

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCE

[1] Noel, C. and Navard, P., Prog. Polym. Sci., 16, 55 (1991).Google Scholar
[2] Jedlinski, Z., Franee, J., Kulczycki, A., Sigiru, A. and Carfagna, C., Macromol., 22, 1600 (1989).Google Scholar
[3] Wu, P. P., Hsu, S. L., Thomas, O. and Blumstein, A., J. Polym Sci. Part B, Polym. Phys., 24, 827 (1986).Google Scholar
[4] Bilibin, A. Y. and Piraner, O. N., MakromoL Chem., 192, 201 (1991).Google Scholar
[5] Kolb, E. S., PhD Dissertation, University of Massachusetts, Ameherst, 1991.Google Scholar
[6] Percec, V. and Keller, A., Macromol., 23, 4347 (1990).Google Scholar
[7] Lillya, C. P., Wu, B., Kolb, E. S. and Stein, R. S., Macromol., will be submitted.Google Scholar