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Phase Transition Behavior of Main Chain Nematic Liquid-Crystalline Polymers Based on 2-methyl-1,4-bis[4-(4-pentenyloxy)benzoyl]hydroquinone and 2-tert-butyl-1,4-bis[4-(4-pentenyloxy)benzoyl]hydroquinone

Published online by Cambridge University Press:  21 February 2012

Christain Melchert ,
M. Behl  and
A. Lendlein
Christain Melchert
Affiliation:
Center for Biomaterial Development and Berlin Brandenburg Center for Regenerative Therapies, Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Kantstr. 55, 14513 Teltow, Germany Institute of Chemistry, University of Potsdam, Potsdam-Golm, Germany
M. Behl
Affiliation:
Center for Biomaterial Development and Berlin Brandenburg Center for Regenerative Therapies, Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Kantstr. 55, 14513 Teltow, Germany Institute of Chemistry, University of Potsdam, Potsdam-Golm, Germany
A. Lendlein
Affiliation:
Center for Biomaterial Development and Berlin Brandenburg Center for Regenerative Therapies, Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Kantstr. 55, 14513 Teltow, Germany Institute of Chemistry, University of Potsdam, Potsdam-Golm, Germany
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Abstract

The control of phase transition behavior in liquid crystalline polymers could enable potential application in the field of actuators and sensors by enabling a higher actuator performance of liquid crystalline elastomers (LCE). In this context the phase transition behavior of siloxane based liquid crystalline copolymers synthesized from 1,1,3,3-tetramethyldisiloxane, 2-methyl-1,4-bis[4-(4-pentenyloxy)benzoyl]hydroquinone (M-MeHq), and 2-tert-butyl-1,4-bis[4-(4-pentenyloxy)benzoyl]hydroquinone (M-tBHq) was explored. The selected monomers provided different thermal stabilities of the nematic phase, while the non-flexible siloxane spacer suppressed a smectic phase. The mesogenic properties were studied by means of differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and wide angle X-ray scattering (WAXS). With increasing fraction of M-MeHq the nematic phase of the copolymer was stabilized and a tailoring of relatively low TNI was achieved.

Keywords

liquid crystalactuatorpolymer
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1403: Symposium V – Multifunctional Polymer-Based Materials , 2012 , mrsf11-1403-v08-03
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

1. Ohm, C., Brehmer, M., and Zentel, R., Adv. Mater. 22, 3366 (2010).Google Scholar
2. Bispo, M., Guillon, D., Donnio, B., and Finkelmann, H., Macromolecules 41, 3098 (2008).Google Scholar
3. Rousseau, I.A., Qin, H.H., and Mather, P.T., Macromolecules 38, 4103 (2005).Google Scholar
4. Warner, M. and Terentjev, E., Macromol. Symp. 200, 81 (2003).Google Scholar
5. Behl, M. and Lendlein, A., Soft Matter 3, 58 (2007).Google Scholar
6. Behl, M., Zotzmann, J., and Lendlein, A., Shape-Memory Polymers, 226, 1 (2010).Google Scholar
7. Lendlein, A., Behl, M., and Razzaq, M.Y., Adv. Mater. 22, 3388 (2010).Google Scholar
8. Mark, J.E, Prog. Polym. Sci. 28, 1205 (2003).Google Scholar
9. Wermter, H. and Finkelmann, H., e-Polym. 13, (2001).Google Scholar
10. Caruso, U., Pragliola, S., Roviello, A., Sirigu, A., and Iannelli, P., Macromolecules, 28, 6089 (1995).Google Scholar
11. Demus, D., Liq. Cryst. 5, 75 (1989).Google Scholar
12. Clough, S.B., Blumstein, A., deVries, A., in Mesomorphic Order in Polymers, edited by Blumstein, A., (American Chemical Society, 1978) pp. 1–11.Google Scholar