Polymer Science Series B

, Volume 49, Issue 5–6, pp 136–138 | Cite as

Thermal sensitivity of poly(N-vinylpyrrolidone) solutions in water-saline media

  • B. I. Nakhmanovich
  • N. I. Pakuro
  • E. I. Akhmet’eva
  • G. I. Litvinenko
  • A. A. Arest-Yakubovich
Article

Abstract

The effect of salts on the behavior of aqueous solutions of poly(N-vinylpyrrolidone), which is known to show no thermal sensitivity in the absence of additives, has been studied. The introduction of some salts, for example, KF, KH2PO4, K2CO3, and Na2SO4, leads to the occurrence of phase transitions. The corresponding phase transition temperatures depend on the nature and concentration of salts. Even moderate concentrations (0.3–0.6 mol/l) of the most active salts (K2CO3 and Na2SO4) are shown to reduce the phase transition temperature to 10–20°C.

Keywords

Polymer Concentration Phase Transition Temperature Thermal Sensitivity Active Salt Phase Separation Temperature 

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References

  1. 1.
    Yu. E. Kirsh, Prog. Polym. Sci. 18, 519 (1991).CrossRefGoogle Scholar
  2. 2.
    Yu. E. Kirsh, Poly(N-vinylpyrrolidone) and Other Poly(N-vinylamides) (Nauka, Moscow, 1998) [in Russian].Google Scholar
  3. 3.
    Y. Akin, E. Celik, W. Sigmund, and Y. S. Hascicek, IEEE Trans. Appl. Supercond. 13, 2563 (2003).CrossRefGoogle Scholar
  4. 4.
    K. Park and H. Park, in The Polymeric Materials Encyclopedia, Ed. by J. C. Salomone (CRC, Boca Raton, 1996), Vol. 10, p. 7785.Google Scholar
  5. 5.
    V. O. Aseyev, H. Tenhu, and F. M. Winnik, Adv. Polym. Sci. 196, 1 (2006).CrossRefGoogle Scholar
  6. 6.
    Y. Maeda, T. Nakamura, and I. Ikeda, Macromolecules 35, 217 (2002).CrossRefGoogle Scholar
  7. 7.
    A. A. A. DeQueiroz, A. Gallardo, and J. S. Roman, Biomaterials 21, 1631 (2000).CrossRefGoogle Scholar
  8. 8.
    Yu. E. Kirsh, N. A. Yanul, K. K. Kalainsh, and V. G. Maslov, J. Mol. Liq. 82, 117 (1999).CrossRefGoogle Scholar
  9. 9.
    Yu. E. Kirsh, N. A. Yanul’, Yu. M. Popkov, and S. F. Timashev, Zh. Fiz. Khim. 73, 313 (1999).Google Scholar
  10. 10.
    Yu. E. Kirsh and K. K. Kalnin’sh, Zh. Prikl. Khim. (S.-Peterburg) 72, 1233 (1999).Google Scholar
  11. 11.
    M. Ataman, Colloid Polym. Sci. 265, 19 (1987).CrossRefGoogle Scholar
  12. 12.
    B. I. Nakhmanovich, Ya. G. Urman, E. V. Kristal’nyi, and A. A. Arest-Yakubovich, Polymer Science, Ser. B 45, 135 (2003) [Vysokomol. Soedin., Ser. B 45, 978 (2003)].Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  • B. I. Nakhmanovich
    • 1
  • N. I. Pakuro
    • 1
  • E. I. Akhmet’eva
    • 1
  • G. I. Litvinenko
    • 1
  • A. A. Arest-Yakubovich
    • 1
  1. 1.State Scientific Center of the Russian FederationKarpov Institute of Physical ChemistryMoscowRussia

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