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Effect of external field on phase behavior of ternary systems involving polypeptide

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Abstract

The lattice theory regarding ternary systems involving a conformationally variable polypeptide and a randomly coiled polymer presented recently is extended to the case where an external orientational field is present. Chemical potentials of the components in the isotropic and anisotropic phases were obtained. The calculations carried out show that the external field exerts a marked effect on the phase behavior of the ternary systems. The isotropic-anisotropic biphasic gap is predicted to shift to lower polymer concentrations and become narrower when the external field exists. The entrance of the randomly coiled polymers into the anisotropic phase is promoted. Influences of chain conformation of polypeptide, chain length and temperature have been studied in the presence of the external field. The comparison between theory and experimental results was also carried out.

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References

  1. Flory, P. J., Statistical thermodynamics of mixtures of rodlike particales. 5. Mixtures with random coils, Macromolecules, 1978, 11: 1138–1141.

    CAS  Google Scholar 

  2. Aharoni, S. M., Rigid backbone polymer: 6. Ternary phase relationships of polyisocyanates, Polymer, 1980, 21: 21–30.

    Article  CAS  Google Scholar 

  3. Bianchi, E., Ciferri, A., Conio, G. et al., Mesophase formation and polymer compatibility. The poly(p-benzamide)-polyacrylonitrile-diluent system, Macromolecules, 1984, 17: 1526–1531.

    CAS  Google Scholar 

  4. Hwang, W. F., Wiff, D. R., Benner, C. L. et al., Composites on a molecular level: Phase relationships, processing, and properties, J. Macromol. Sci. Phys., 1983, B22: 231–257.

    CAS  Google Scholar 

  5. Huh, W., Lee, C. Y. C., Bai, S. J., Phase behavior of rigid-rod/ coil/solvent ternary systems with rod-coil interaction, Polymer, 1992, 33: 789–794.

    Article  CAS  Google Scholar 

  6. Marsano, E., Bianchi, E., Ciferri, A. et al., Mosophase fornation and polymer compatibility. 4. Cellulose/cellulose acetate/diluent systems, Macromolecules, 1986, 19: 626–630.

    CAS  Google Scholar 

  7. Ciferri, A., Liquid Crystallinity in Polymers, New York: CVH, 1991, 209–259.

    Google Scholar 

  8. Sasaki, S., Uzawa, T., Phase behavior of the ternary system solvent: Poly(γ-benzyl L-Glutamate) and polystyrene, Polymer Bulletin, 1986, 15: 517–524.

    Article  CAS  Google Scholar 

  9. Blonski, S., Brostow, W., Jonah, D. et al., Solubility and miscibility in ternary systems: Polymer liquid crystal + flexible polymer + solvent, Macromolecules, 1993, 29: 2584–2589.

    Google Scholar 

  10. Lin, J. P., Lin, S. L., Abe, A. et al., Phase behavior of ternary systems involving a conformationally variable chain and a randomly coiled polymer, Macromolecules, 2003, 36: 6267–6272.

    Article  CAS  Google Scholar 

  11. Lin, J. P., Abe, A., Furuya, H. et al., Liquid crystal formation coupled with the coil-helix transition in the ternary system PBLG-DCA-EDC, Macromolecules, 1996, 29: 2584–2589.

    Article  CAS  Google Scholar 

  12. Marrucci, G., Ciferri, A., Phase equilibria of rod-like molecules in an extensional flow field, J. Polym. Sci., Polym. Lett. Ed., 1977, 15: 643–648.

    Article  CAS  Google Scholar 

  13. Vasilenko, S. V., Khokhlov, A. R., Shibaev, V. P., Theory of liquid-crystalline ordering in melts of macromolecules with stiff and flexible fragments in the main chain. 2. Effect of external orientational fields, Macromolecules, 1984, 17: 2275–2279.

    Article  CAS  Google Scholar 

  14. Aikawa, Y., Minami, N., Sukigara, M., Effect of electrical field on the phase transition of rod-like polymer solution, Mol. Cryst. Liq. Cryst., 1981,70: 115–127.

    Article  Google Scholar 

  15. Mather, P. T., Romo-Uribe, A., Han, C. D. et al., Rheo-optical evidence of a flow-induced isotropic-nematic transition in a thermotropic liquid-crystalline polymer, Macromolecules, 1997, 30: 7977–7989.

    Article  CAS  Google Scholar 

  16. Toyoshima, Y., Minami, N., Sukigara, M., Effect of the electrical on the phase transition in solutions of rod-like particles 1, Mol. Cryst. Liq. Cryst., 1976, 35: 325–335.

    Article  CAS  Google Scholar 

  17. Lin, Z. Q., Zhang, H. D., Yang, Y. L., Phase diagrams of mixtures of flexible polymers and nematic liquid crystals in a field, Physical Review E, 1998, 58(5): 5867–5872.

    Article  CAS  Google Scholar 

  18. Flory, P. J., Matheson, R. R., Statistical thermodynamics of semirigid macromolecules: Chains with interconvertible rodlike and random-coil sequences in equilibrium, J. Phys. Chem., 1984, 88: 6606–6612.

    Article  CAS  Google Scholar 

  19. Lin, J. P., Reentrant isotropic transition of polypeptide liquid crystal, Polymer, 1997, 38: 4837–4841.

    Article  CAS  Google Scholar 

  20. Lin, J. P., Reentrant isotropic transition of polypeptide liquid crystal: Effect of steric and orientation dependent interactions, Polymer, 1998, 39: 5495–5500.

    Article  CAS  Google Scholar 

  21. Lin, J. P., Liu, N., Chen, J. D. et al., Conformational changes coupled with the isotropic-anisotropic transition part 1. Experimental phenomena and theoretical considerations, Polymer, 2000, 41: 6189–6194.

    Article  CAS  Google Scholar 

  22. Lin, J. P., Zhou, H. J., Zhou, D. F., Conformational changes coupled with the isotropic-anisotropic transition part 2. Effect of the external field, Polymer, 2001, 42: 549–554.

    Article  CAS  Google Scholar 

  23. Chen, T., Lin, J. P., Lin, S. L. et al., Effect of electric field on phase behavior of polypeptide liquid crystals, Acta Polymerica Sinica,2004, 1: 145–148.

    Google Scholar 

  24. Doty, P., Bradbury, J. H., Holtzer, A. H., Polypeptides IV. The molecular weight, configuration and association of poly-γ-benzyl-L-glutamate in various solvents, J. Am. Chem. Soc., 1956, 78: 947–954.

    Article  CAS  Google Scholar 

  25. Flory, P. J., Statistical thermodynamics of mixtures of rodlike particles. 6. Rods connected by flexible joints, Macromolecules, 1978, 11: 1141–1144.

    Article  CAS  Google Scholar 

  26. Bosch, A. T., Maissa, P., Sixou, P., Effect of the flexibility on the phase transition of polymeric liquid crystals, Physics Letters, 1983, 94A: 298–300.

    Google Scholar 

  27. Pearce, E. M., Kwei, T. K., Min, B. Y., Polymer compatibilization through hydrogen bonding, J. Macromol. Sci. Chem., 1984, A21: 1181–216.

    Article  CAS  Google Scholar 

  28. Eisenbach, C. D., Hofmann, J., Goldel, A. et al., Miscibility of rigid-rod and random-coil macromolecules through acid-base interactions, Macromolecules, 1999, 32: 1463–1470.

    Article  CAS  Google Scholar 

  29. Inomata, K., Shimizu, H., Nose, T., Phase equilibrium studies on rod/solvent and rod/coil/solvent systems containing poly(α,l-glutamate) having oligo(ethylene glycol) side chains, J. Polym. Sci. Polym. Phys. Ed., 2000, 38: 1331–1340.

    Article  CAS  Google Scholar 

  30. Ciferri, A., Assembling nano and macrostructures and the supramolecular liquid crystal, Prog. Polym. Sci., 1995, 20: 1081–1120.

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China

    Shaoliang Lin, Jiaping Lin, Tao Chen & Xiaohui Tian

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  1. Shaoliang Lin
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  2. Jiaping Lin
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  3. Tao Chen
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  4. Xiaohui Tian
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Correspondence to Jiaping Lin.

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Lin, S., Lin, J., Chen, T. et al. Effect of external field on phase behavior of ternary systems involving polypeptide. Sc. China Ser. B-Chem. 48, 132–142 (2005). https://doi.org/10.1360/04yb0130

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  • DOI: https://doi.org/10.1360/04yb0130

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