Skip to main content
SpringerLink
Log in

Synthesis and characterization of new side chain liquid crystalline polymers based on poly(dipropargylamine) main chain

  • Published:
Polymer Bulletin Aims and scope Submit manuscript

Summary

A new thermotropic side-chain liquid crystalline polymers based on poly (dipropargylamine) backbone were prepared by metathesis polymerization with transition metal catalysts. It was found that the MoCl5-EtAlCl2 catalyst system were very effective for the cyclopolymerization of presently investigated monomers. Resulting polymers were soluble in common organic solvents such as THF, chloroform, etc. The number-average molecular weight (\(\left( {\overline {{\text{Mn}}} } \right)\)) values of the polymers were in the range of 6.49x103–11.6x103, relative to polystyrene standard by GPC.

Thermal properties of the monomers and the polymers synthesized were examined by differential scanning calorimetry (DSC) and cross-polarized optical microscopy. Both monomer and polymer displayed enantiotropic liquid crystallinity showing the reversible phase transition.

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. C. B. McArdle, Side Chain Liquid Crystal Polymers; Blackie: New York., (1989).

    Google Scholar 

  2. A. Ciferri, W. R. Krigbaum, R. B. Mayer, Eds. Polymer Liquid Crystal; Academic Press: New York., (1982).

    Google Scholar 

  3. H. Finkelmann, G. Rehage, Adv. Polym. Sci. 60/61, 99 (1984).

    CAS  Google Scholar 

  4. V. P. Shibaev, N. A. Plate, Adv. Polym. Sci. 60/61, 173 (1984).

    CAS  Google Scholar 

  5. S. H. Jin, S. H. Kim, H. N. Cho and S. K. Choi, Macromolecules., 24, 6050 (1991).

    Article  CAS  Google Scholar 

  6. S. H. Jin, S. J. Choi, W. S. Ahn, H. N. Cho and S. K. Choi, Macromolecules., 26, 1487 (1993).

    CAS  Google Scholar 

  7. S. J. Choi, S. H. Jin, W. S. Ahn, H. N. Cho and S. K. Choi, Macromolecules., in press.

  8. J. V. Crivello, M. Deptolla, H. Ringsdorf, Liq. Cryst., 3, 235 (1988).

    CAS  Google Scholar 

  9. O. K. Cho, Y. H. Kim, K. Y. Choi and S. K. Choi, Macromolecules., 23, 12 (1990).

    CAS  Google Scholar 

  10. M. S. Ryoo, W. C. Lee and S. K. Choi, Macromolecules., 23, 3029 (1990).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Chemistry, Korea Advanced Institute of Science and Technology, 373-1 Kusung-Dong, Yusung-Gu, 305-701, Taejon, Korea

    Sang-Jun Choi & Sam-Kwon Choi

  2. Polymer Materials Laboratory, Korea Institute of Science and Technology, Cheangyangri, P.O. Box 131, Seoul, Korea

    Hyun-Nam Cho

Authors
  1. Sang-Jun Choi
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Hyun-Nam Cho
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Sam-Kwon Choi
    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

Choi, SJ., Cho, HN. & Choi, SK. Synthesis and characterization of new side chain liquid crystalline polymers based on poly(dipropargylamine) main chain. Polymer Bulletin 32, 11–18 (1994). https://doi.org/10.1007/BF00297408

Download citation

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00297408

Keywords

Search

Navigation