Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Phase behavior of poly(ethylene-co-norbornene) in C6 hydrocarbon solvents: Effect of polymer concentration and solvent structure

  • 49 Accesses

  • 2 Citations

Abstract

Phase behavior information is necessary for accomplishing homogeneous copolymerization to obtain high yield of copolymers and prevent a fouling problem. Cloud-point data to 160oC and 1,450 bar are presented for five C6 hydrocarbon solvents, normal hexane, 2,2-dimethyl butane, 2,3-dimethyl butane, 2-methyl pentane, and 3-methyl pentane, with poly(ethylene-co-53 mol% norbornene) (PEN53). The pressure-concentration isotherms measured for PEN53/n-hexane have maximums that range between 5 and 12 wt% PEN53. The cloud-point curves for PEN53 all have negative slopes that decrease in pressure with temperatures. The single-phase region of PEN53 inn-hexane is larger than the regions in 2,2-dimethyl butane, 2,3-dimethyl butane, 2-methyl pentane, and 3-methyl pentane. The cloud-point curve of PEN53 in 2,2-dimethyl butane is located at higher temperatures and pressures than the curve in 2,3-dimethyl butane due to the reduced dispersion interactions with and limited access of 2,2-dimethyl butane to the copolymer. Similar cloud-point behavior is observed for PEN53 in 2-methyl pentane and 3-methyl pentane.

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

References

  1. (1)

    G. Khanarian,Opt. Eng.,40, 1024 (2001).

  2. (2)

    R. R. Lamonte and D. McNalley,Plastics Engineering,56, 51 (2000).

  3. (3)

    G. Khanarian,Polym. Eng. Sci.,40, 2590 (2000).

  4. (4)

    C.-K. Y. Thomas, H.-Y. T. Stanley, S.-F. Wang, and C.-C. Juan,Composition Sci. and Technol.,62, 655 (2002).

  5. (5)

    Cyclic Olefin Copolymers, 94/95S5, Chem. Systems Inc., New York, 1996, Chapter IV.

  6. (6)

    T. Weller, D. Schulz, and D. McNally,Plastics Technology,43, 58 (1997).

  7. (7)

    R. C. Reid, J. M. Prausnitz, and B. E. Poling,The Properties of Gases and Liquids, 4th ed., McGraw-Hill, New York, U.S.A., 1987, pp 656.

  8. (8)

    J. A. Abara, D. W. Jennings, W. B. Kay, and A. S Teja,J. Chem. Eng. Data,33, 242 (1988).

  9. (9)

    T. E. Daubert,J. Chem. Eng. Data,41, 365 (1996).

  10. (10)

    S.-H. Lee, M. A. LoStracco, B. M. Hasch, and M. A. McHugh,J. Phys. Chem.,98, 4055 (1994).

  11. (11)

    C. A. Irani and C. Cozewith,J. Appl. Polym. Sci.,31, 1879 (1986).

  12. (12)

    M. T. Rätzsch, P. Wagner, C. Wohlfarth, and D. Heise,Acta Polymerica,33, 463 (1982).

  13. (13)

    M. T. Rätzsch, P. Wagner, C. Wohlfarth, and S. Gleditzsch,Acta Polymerica,34, 340 (1983).

  14. (14)

    M. A. McHugh and V. J. Krukonis,Supercritical Fluid Extraction: Principles and Practice, 2nd ed., Butterworths, Stoneham, MA, U.S.A., 1994, pp 64.

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Kwon, H., Lee, S. Phase behavior of poly(ethylene-co-norbornene) in C6 hydrocarbon solvents: Effect of polymer concentration and solvent structure. Macromol. Res. 11, 231–235 (2003). https://doi.org/10.1007/BF03218357

Download citation

Keywords

  • poly(ethylene-co-norbornene)
  • phase behavior
  • high pressures.