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Activation energies for metastable to stable phase transition of 4,4'-di-n-heptyl- oxyazoxybenzene

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Abstract

The paper studies metastable phases of 4,4'-di-n-heptyloxyazoxybenzene (liquid crystal substance) using adiabatic calorimetry. The process of transformation between metastable and stable phases is described quantitatively. The conclusion concerns activation energies for metastable phase to stable phase transition.

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References

  1. M. Rachwalska and X. P. Nguyen, Acta Phys. Pol., A55 (1979) 95.

    CAS  Google Scholar 

  2. C. N. R. Rao, and K. J. Rao, Kinetics of Thermal Transformation, Progress in: Solid State Chemistry, Ed. H. Russ, 1967 p. 4.

  3. M. Rachwalska, Mol. Cryst. Liq. Cryst., 237 (1993) 151.

    CAS  Google Scholar 

  4. M. Rachwalska, J. Thermal Anal., 45 (1995) 1061.

    CAS  Google Scholar 

  5. J. Mayer and T. Waluga, Rep. INP. No. 750/PL, Cracow 1971.

  6. J. Mayer, T. Waluga and J. A. Janik, Phys. Lett., 41A (1972) 102.

    Google Scholar 

  7. E. Heinze, S. Grande and J. K. Mościcki, Acta Phys. Pol., A53 (1978) 909.

    Google Scholar 

  8. J.K. Mościcki, Solid State Commun., 20 (1976) 481.

    Article  Google Scholar 

  9. J.K.Mościcki, X. P. Nguyen, S. Urban and M. Rachwalska, Mol. Cryst. Liq. Cryst., 40 (1977) 177.

    Google Scholar 

  10. T. Wang, R. Y. Liu, M. L. Zhu and J. S. Zhang, J. Therm. Anal. Cal., 70 (2002) 507.

    Article  CAS  Google Scholar 

  11. J. Lalot, I. Stasik, G. Demailly, D. Beaupère and P. Godé, J. Therm.. Anal. Cal., 74 (2003) 77.

    Article  CAS  Google Scholar 

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Rachwalska, M. Activation energies for metastable to stable phase transition of 4,4'-di-n-heptyl- oxyazoxybenzene. Journal of Thermal Analysis and Calorimetry 78, 343–348 (2004). https://doi.org/10.1023/B:JTAN.0000042180.79973.81

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  • DOI: https://doi.org/10.1023/B:JTAN.0000042180.79973.81

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