Hysteresis Effects During the Phase Transition in Solutions of Temperature Sensitive Polymers

  • I. E. Suleimenov Almaty University of Power Engineering and Telecommunication, Baitursynova 126, 050013 Almaty, Kazakhstan
  • O. Guven Hacettepe University, Beytepe 06532, Ankara, Turkey
  • G. A. Mun al-Farabi Kazakh National University, al-Farabi ave. 71, 050040 Almaty, Kazakhstan
  • Ch. Uzun Hacettepe University, Beytepe 06532, Ankara, Turkey
  • O. A. Gabrielyan Crimean Federal University, Vernadskogo 4, 295007 Simferopol, Russia
  • Sh. B. Kabdushev Almaty University of Power Engineering and Telecommunication, Baitursynova 126, 050013 Almaty, Kazakhstan
  • L. Agibaeva al-Farabi Kazakh National University, al-Farabi ave. 71, 050040 Almaty, Kazakhstan
  • A. Nurtazin Almaty University of Power Engineering and Telecommunication, Baitursynova 126, 050013 Almaty, Kazakhstan;Crimean Federal University, Vernadskogo 4, 295007 Simferopol, Russia; Narxoz University, Zhandosov 55, 050035 Almaty, Kazakhstan; West Kazakhstan State Medical University, Maresieva 68, 030000 Aktobe, Kazakhstan

Abstract

It is demonstrated, for the first time,that well-known phase transitions induced by changes in temperature in solutions of polymers containing both hydrophilic and hydrophobic functional groups could be followed by noticeable hysteresis effects. A well-known phase transitions accompanied by a sharp change in fluid properties, in particular its optical density can be induced by many external influences, including temperature changes occurring in the solutions of polymers containing both hydrophilic and hydrophobic functional groups. Since intensification subsequent hydrophobic interactions, leading to loss of solubility of the polymer molecules, resulting, in particular, a significant increase in the turbidity of the medium and are accompanied by a pronounced hysteresis phenomena. Hysteresis phenomena in the processes of molecular-scale play an important theoretical and practical interest in linkage with the development of advanced nano-level technology. In particular, the issue of the development of molecular "trigger" switches, and other analog electronic systems, implemented on submolecular level was actively discussed. In fact, under the same physical conditions of the environment of macromolecules system can be in two different states, which resolves the issue of programming such molecules. State of these polymers depends on their way of formation and thermodynamic variables. Observed effect could be utilized directly for information recording into the structure on the basis of stimulus-sensitive macromolecular chains. In fact, it is a first step towards creating memory of quasi-biological elements.

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Published
2017-01-25
How to Cite
[1]
I. Suleimenov, “Hysteresis Effects During the Phase Transition in Solutions of Temperature Sensitive Polymers”, Eurasian Chem. Tech. J., vol. 19, no. 1, pp. 41-46, Jan. 2017.
Section
Articles

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