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Journal of Materials Science

, Volume 43, Issue 16, pp 5436–5440 | Cite as

Effect of polyol excess on the electrical property of vegetable-polyurethane film

  • D. H. F. Kanda
  • H. N. Nagashima
  • J. A. Malmonge
  • W. K. SakamotoEmail author
  • G. O. Chierice
Article

Abstract

Freestanding castor oil-based polyurethane (PU) film was obtained using spin-coating method. The effect of polyol content was analysed by means of thermally stimulated depolarisation current and AC dielectric measurements techniques. Two relaxation peaks were observed in the temperature range of −40 to 60 °C for PU with different polyol contents. The presence of polyol excess provides a shift to lower temperature of the α relaxation and the decrease in the activation energy of the transition in this region might be attributed to the plasticising effect of the polyol. The peak at higher temperature is due to the Maxwell–Wagner–Sillars relaxation, which also shifts in the low temperature direction as the polyol content is increased.

Keywords

Polyol Soft Segment Interfacial Polarisation Depolarisation Current Diphenylmethane Diisocyanate 

Notes

Acknowledgements

Special thanks are due to Poliquil Araraquara Polimeros Química Ltda for supplying the castor oil-based PU and to Fundação de Amparo à Pesquisa do Estado de São Paulo—FAPESP for the financial support.

References

  1. 1.
    Grant GT, Taft RM, Wheeler S (2001) J Prosthet Dent 85:281. doi: https://doi.org/10.1067/mpr.2001.114089 CrossRefGoogle Scholar
  2. 2.
    Chen G, Hu JW, Zhang MQ, Rong MZ (2005) Sens Actuators B 105:187. doi: https://doi.org/10.1016/S0925-4005(04)00423-X CrossRefGoogle Scholar
  3. 3.
    Claudé B, Gonon L, Verney V, Gardette JL (2001) Polym Test 20:771. doi: https://doi.org/10.1016/S0142-9418(01)00022-8 CrossRefGoogle Scholar
  4. 4.
    Woods G (1987) The ICI polyurethane books. Wiley, HollandGoogle Scholar
  5. 5.
    Oertel G (1994) Polyurethane handbook, 2nd edn. Hanser, New YorkGoogle Scholar
  6. 6.
    Georgoussis G, Kyritsis A, Pissis P, Savelyev Yu V, Akhranovich ER, Privalko EG et al (1999) Eur Polym J 35:2007. doi: https://doi.org/10.1016/S0014-3057(98)00288-2 CrossRefGoogle Scholar
  7. 7.
    Chu B, Gao T, Li Y, Wang J, Desper CR, Byrne CA (1992) Macromolecules 25:5724. doi: https://doi.org/10.1021/ma00047a025 CrossRefGoogle Scholar
  8. 8.
    Guo A, Javni I, Petrovic Z (2000) J Appl Polym Sci 77:467. doi:10.1002/(SICI)1097-4628(20000711)77:2<467::AID-APP25>3.0.CO;2-FCrossRefGoogle Scholar
  9. 9.
    Lyon CK, Garret VH, Frankel EN (1974) J Am Oil Chem Soc 51:331. doi: https://doi.org/10.1007/BF02632378 CrossRefGoogle Scholar
  10. 10.
    Chian KS, Gan LHJ (1998) Appl Polym Sci 68:509. doi:10.1002/(SICI)1097-4628(19980418)68:3<509::AID-APP17>3.0.CO;2-PCrossRefGoogle Scholar
  11. 11.
    Dahlke B, Poltrock R, Larbig H, Scherzer HDJ (1998) Cell Plast 34:361CrossRefGoogle Scholar
  12. 12.
    Sakamoto WK, Kanda DHF, Andrade FA, Das-Gupta DKJ (2003) Meat Sci 38:1465. doi: https://doi.org/10.1023/A:1022912312657 CrossRefGoogle Scholar
  13. 13.
    Malmonge JA, dos Santos MA, Sakamoto WK (2005) J Math Sci 40:4557. doi: https://doi.org/10.1007/s10853-005-1117-6 CrossRefGoogle Scholar
  14. 14.
    Sakamoto WK, Shibatta-Kagesawa S, Kanda DHF, Fernandes SH, Longo E, Chierice GO (1999) Phys Status Solidi A Appl Res 172:265. doi:10.1002/(SICI)1521-396X(199903)172:1<265::AID-PSSA265>3.0.CO;2-NCrossRefGoogle Scholar
  15. 15.
    Sakamoto WK, Kagesawa S, Kanda DHF, Das-Gupta DKJ (1998) Meat Sci 33:3325. doi: https://doi.org/10.1023/A:1013233329595 CrossRefGoogle Scholar
  16. 16.
    Sakamoto WK, Kanda DHF, Carvalho CLJ (2000) Mater Sci Lett 19:603. doi: https://doi.org/10.1023/A:1006790530934 CrossRefGoogle Scholar
  17. 17.
    Gross B (1964) Charge storage in solid dielectrics. Elsevier, NYGoogle Scholar
  18. 18.
    Ahmed MT, Fahmy T (2005) Polym Plastics Technol Eng 44:1559. doi: https://doi.org/10.1080/03602550500209507 CrossRefGoogle Scholar
  19. 19.
    Van Turnhout J (1987) In: Sessler GM (ed) Electrets, 2nd edn, chapter 3. Springer-Verlag, GermanyGoogle Scholar
  20. 20.
    Tsonos C, Apekis L, Zois C, Tsonos G (2004) Acta Mater 52:1319. doi: https://doi.org/10.1016/j.actamat.2003.11.015 CrossRefGoogle Scholar
  21. 21.
    Kanapitsas A, Pissis P, Estrella AG (1999) Eur Polym J 35:923. doi:10.1016/S0014-3057(98)00075-5CrossRefGoogle Scholar
  22. 22.
    Tsonos C, Apekis L, Viras K, Stepanenko L, Karabanova L, Sergeeva L (2001) Solid State Ionics 143:229. doi: https://doi.org/10.1016/S0167-2738(01)00858-X CrossRefGoogle Scholar
  23. 23.
    Spathis G, Niaounakis M, Kontou E, Apekis L, Pissis P, Christodoulides CJ (1994) Appl Polym Sci 54:831. doi: https://doi.org/10.1002/app. 1994.070540701 CrossRefGoogle Scholar
  24. 24.
    Kyritsis A, Pissis P, Gomez-Ribelles JL, Monleon Pradas MJ (1994) Polym Sci B Polym Phys 32:1001. doi: https://doi.org/10.1002/polb.1994.090320605 CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • D. H. F. Kanda
    • 1
  • H. N. Nagashima
    • 1
  • J. A. Malmonge
    • 1
  • W. K. Sakamoto
    • 1
    Email author
  • G. O. Chierice
    • 2
  1. 1.Department of Physics and ChemistryUniversity of São Paulo State—UNESPIlha SolteiraBrazil
  2. 2.Institute of ChemistryUniversity of São Paulo—USP/São CarlosSao Paulo Brazil

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