Skip to main content
SpringerLink
Log in

Flory-huggins interaction parameters of LCP/thermoplastic blends measured by DSC analysis

  • Published:
Journal of Thermal Analysis and Calorimetry Aims and scope Submit manuscript

Abstract

Liquid crystalline polymer/polyamide 66 (LCP/PA66) and LCP/poly(butyl terephthalate) (LCP/PBT) blends were compounded using a Brabender Plasticorder equipped with a mixing chamber. The LCP employed was a semi-flexible liquid crystalline copolyesteramide based on 30 mol% of p-amino benzoic acid (ABA) and 70 mol% of poly(ethylene terephthalate) (PET). The Flory-Huggins interaction parameters (χ12) of the LCP/ PA66 and LCP/PBT blends are estimated by melting point depression from DSC measurement. The results indicate that c12 values all are negative for LCP/PA66 and LCP/PBT blends, and when the LCP content in these blends is more than 10 mass%, the absolute value of χ12 decreases. Thereby, we can conclude that LCP/PA66 and LCP/PBT blends are fully miscible in the molten state, the molecular interaction between the LCP and PA66 is stronger than that between LCP and PBT. As the LCP content in LCP/PA66 and LCP/PBT blends is more than 10 mass%, the molecular interaction between LCP and matrix polymer decreases.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. M. J. Sullivan and R. A. Weiss, Polym. Eng. Sci., 32 (1992) 517.

    Article  CAS  Google Scholar 

  2. A. Dutta and D. G. Baird, Polymer, 36 (1995) 505.

    Article  Google Scholar 

  3. D. Dutta, R. A. Weiss and J. He, Polymer, 37 (1996) 429.

    Article  CAS  Google Scholar 

  4. M. M. Miller, J. M. Cowie, J. G. Tait, D. L. Brydon and R. R. G. Mather, Polym. Eng. Sci., 36 (1995) 3107.

    CAS  Google Scholar 

  5. R. M. Holsti-Miettinen, M. T. Heino and J. V. Seppala, J. Appl. Polym. Sci., 57 (1995) 573.

    Article  CAS  Google Scholar 

  6. S. C. Tjong, R. K. Y. Li and X. L. Xie, J. Appl. Polym. Sci., 77 (2000) 1964.

    Article  CAS  Google Scholar 

  7. B. Y. Shin, S. H. Jang, I. J. Chung and B. S. Kim, Polym. Eng. Sci., 32 (1992) 73.

    Article  CAS  Google Scholar 

  8. S. Joslin, W. Jackson and R. Farris, J. Appl. Polym. Sci., 54 (1994) 439.

    Article  CAS  Google Scholar 

  9. L. Carpaneto, G. Lesage, R. Pisino and V. Trefiletti, Polymer, 40 (1999) 1781.

    Article  CAS  Google Scholar 

  10. X. L. Xie, C. Yang, X. Tang and D. C. Wu, Chinese J. Mater. Res., 11 (1997) 402.

    CAS  Google Scholar 

  11. X. L. Xie and D. C. Wu, Chem. J. Chinese Univ., 18 (1997) 981.

    CAS  Google Scholar 

  12. X. L. Xie, S. C. Tjong and R. K. Y. Li, J. Appl. Polym. Sci., 77 (2000) 1975.

    Article  CAS  Google Scholar 

  13. R. M. Aseeva, M. Biswas, S. Packirisamy et al., in Key Polymers: Properties and Performance, Springer-Verlag, Berlin 1985, p. 143.

    Google Scholar 

  14. W. J. Jackson and H. F. Kuhfuss, J. Appl. Polym. Sci., 25 (1980) 1685.

    Article  CAS  Google Scholar 

  15. M. I. Kohan, Nylon Plastics Handbook, Carl Hanser Verlag, New York 1995.

    Google Scholar 

  16. C. C. Huang and F. C. Chang, Polymer, 38 (1992) 2135.

    Article  Google Scholar 

  17. O. Olabisi, L. M. Robeson and M. T. Shaw, Polymer-Polymer Miscibility, Academic Press, New York 1979.

    Google Scholar 

  18. D. W. Van Krevelen, Properties of Polymer, Third revised Ed., Elsevier Scientific Publishing Co., Amsterdam 1997.

    Google Scholar 

  19. A. Noshay and J. E. McGrath, Block Copolymer Overview and Critical Survey, Academic Press, NY 1977.

    Google Scholar 

  20. M. Guo and H. G. Zachmann, Polym. Prepr., 37 (1996) 825.

    CAS  Google Scholar 

  21. L. Z. Pillon and L. A. Utracki, Polym. Eng. Sci., 24 (1984) 1300.

    Article  CAS  Google Scholar 

  22. T. G. Gopakumar, S. Ponrathnam, A. Lele, C. R. Rajan and A. Fradet, Polymer, 40 (1999) 357.

    Article  CAS  Google Scholar 

  23. Y. P. Chiou, D. Y. Chang and F. C. Chang, Polymer, 37 (1996) 5655.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Chemistry, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China

    X. L. Xie

  2. Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, P. R. China

    R. K. Y. Li & S. C. Tjong

  3. Department of Manufacturing Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, P. R. China

    C. Y. Tang

Authors
  1. X. L. Xie
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. R. K. Y. Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. S. C. Tjong
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. C. Y. Tang
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Xie, X.L., Li, R.K.Y., Tjong, S.C. et al. Flory-huggins interaction parameters of LCP/thermoplastic blends measured by DSC analysis. Journal of Thermal Analysis and Calorimetry 70, 541–548 (2002). https://doi.org/10.1023/A:1021640911104

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1021640911104

Search

Navigation