Polymer Bulletin

, Volume 52, Issue 6, pp 421–428 | Cite as

Synthesis of Poly(cyclohexyl vinyl ether-b-isobutylene-b-cyclohexyl vinyl ether) Triblock Copolymer by Living Cationic Sequential Copolymerization



The living cationic polymerization of cyclohexyl vinyl ether (CHVE) and sequential block copolymerization of isobutylene with CHVE were carried out by the so-called capping-tuning technique in hexanes/CH3Cl solvent mixtures at –80 °C. It involves capping the initiator, 2-chloro-2,4,4-trimethylpentane (TMPCl), or the living polyisobutylene (PIB) chain end with 1,1-ditolylethylene in the presence of titanium(IV) (TiCl4), followed by fine-tuning of the Lewis acidity with the addition of titanium(IV) isopropoxide (Ti(OIp)4) to match the reactivity of CHVE. Well-defined PCHVE, PIB-b-PCHVE and PCHVE-b-PIB-b-PCHVE with predesigned molecular weights and narrow molecular weight distributions (Mw/Mn<1.1) were thus prepared with [Ti(OIp)4]/[TiCl4] ratios of 1.6–1.8. Differential scanning calorimetry of the triblock copolymers showed two Tgs (–62 °C for PIB and 61 °C for PCHVE) suggesting a microphas-separated morphology of the triblock copolymers and the potential use of them as thermoplastic elastomers.


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  1. 1.
    Kaszas G, Puskas JE, Kennedy JP, Hager WG (1991) J Polym Sci Part A Polym Chem 29:427Google Scholar
  2. 2.
    Kennedy JP, Midha S, Tsunogal Y (1993) Macromolecules 26:429Google Scholar
  3. 3.
    Fodor Z, Faust R (1995) J Macromol Sci Pure Appl Chem A32:575Google Scholar
  4. 4.
    Kennedy JP, Meguriya N, Keszler B (1991) Macromolecules 24:6572Google Scholar
  5. 5.
    Li D, Faust R (1995) Macromolecules 28:4893Google Scholar
  6. 6.
    Kennedy JP, Kurian J (1990) J Polym Sci Part A Polym Chem 28:3725Google Scholar
  7. 7.
    Zhou Y, Faust R, Chen S, Gido SP (2004) Macromolecules 37:6716Google Scholar
  8. 8.
    Fishbein L, Crowe BF (1961) Macromol Chem 48:221Google Scholar
  9. 9.
    Cramail H, Deffieux A (1994) Macromol Chem Phys 195:217Google Scholar
  10. 10.
    Takeshi N, Tamotsu H, Toshiyuki K (2004) J Polym Sci Part A Polym Chem 42:3649Google Scholar
  11. 11.
    Kwon Y, Faust R (2004) Adv Polym Sci 167:107Google Scholar
  12. 12.
    Roth M, Mayr H (1996) Macromolecules 29:6104Google Scholar
  13. 13.
    Györ M, Wang H C, Faust R (1992) J Macromol Sci Pure Appl Chem A29:639Google Scholar
  14. 14.
    Hadjikyriacou S, Faust R (1996) Macromolecules 29:5261Google Scholar
  15. 15.
    Ledwith A, Lockett E, Sherrington DC (1975) Polymer 16:31Google Scholar
  16. 16.
    Zhou Y, Faust R (2003) Polymer Preprints 44(2):661Google Scholar

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.Polymer Science Program, Department of ChemistryUniversity of Massachusetts LowellLowellUSA

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