Skip to main content
    • Aa
    • Aa

The Influence of Thermal Annealing on Microstructure and Mechanical Properties in High Performance Liquid Crystal Copolyesters

  • Adriana Reyes-Mayer (a1) (a2), Amaury Constant (a3), Angel Romo-Uribe (a1) and Michael Jaffe (a4)

In this research we have focused on the influence of thermal treatment for periods of time on the thermal and mechanical properties of extruded films of a series of high-performance thermotropic liquid crystal polymers (LCPs). The dependence of microstructure, thermal and mechanical properties on the extent of thermal treatment is investigated. Especially synthesized wholly aromatic LCPs based on hydroxybenzoic acid (B), hydroxynaphthoic acid (N), terephthalic acid (TA) and biphenol (BP) are kindly supplied by Hoechst Celanese Research Corp in the form of 50 μm thick extruded films. Thus, the influence of monomer composition is also studied in order to contrast the influence of molecular conformation. Thermal treatments are carried out at temperatures close to the solid-to-nematic transition (Ts→n) for up to several hours under dry air conditions. The results show a profound influence of thermal annealing on morphology and mechanical modulus when annealing is carried out c.a. 40ºC below Ts→n, where solid-to-nematic transition and Young’s modulus are significantly increased.

Corresponding author
*Contact author:
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

1. W.J. Jackson and H. F. Kuhfuss , J. Polym. Sci. Polym. Chem. 14, 2043 (1976).

3. H.N. Yoon , L.F. Charbonneau , G.W. Calundann , Adv. Mat. 4, 206 (1992).

7. M. Cakmak , A. Teitge , H.G. Zachmann and J.L. White , J. Polym. Sci. Poly. Phys. 31, 371 (1993).

8. J.B. Stamatoff , Mol. Cryst. Liq. Cryst, 110, 75 (1984).

9. T.M. Nicholson and I.M. Ward , Polymer 39, 315 (1998).

11. A. Romo-Uribe , T.J. Lemmon and A.H. Windle , J. Rheol. 41, 1117 (1997).

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *


Full text views

Total number of HTML views: 0
Total number of PDF views: 1 *
Loading metrics...

Abstract views

Total abstract views: 156 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 23rd June 2017. This data will be updated every 24 hours.