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Syntheses and characterization of various polyisobutylene-polystyrene block copolymers

1. Model hydrosilylations and syntheses of tri- and H-block copolymers

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Summary

Block copolymers comprising of a central rubbery polyisobutylene PIB segment connected to two or four glassy polystyrene PSt segments (i.e., triblocks or H blocks) have been prepared and characterized. The syntheses were accomplished by coupling living polystyrene anions PStΘ to chlorosilanetelechelic PIB's, for example, Cl-Si-PIB-Si-Cl. The latter prepolymers were obtained by hydrosilylating olefin-telechelic PIB's with chlorohydrosilanes. The conditions necessary for the syntheses have been developed with the aid of model kinetic experiments using 2,4,4-trimethyl-1-pentene. The rate of hydrosilylation of this model olefin in the presence of H2PtCl6 gave the following reactivity order for the chlorohydrosilanes investigated: MeSiHCl2⩾Me2SiHCl > HSiCl3. Increasing the silane/olef in ratio, temperature, and catalyst concentration enhances the rate of hydrosilylation and conversion. The block copolymers have been characterized by fractional solvent separation followed by RI-UV dual detector GPC, osmometry, and high resolution 1H NMR spectroscopy.

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References

  1. V. S. C. Chang and J. P. Kennedy, Polym. Bull., 8, 69 (1982)

    Article  CAS  Google Scholar 

  2. J. P. Kennedy, S. C. Guhaniyogi and V. Percec, Polym. Bull., 8, 571 (1982)

    CAS  Google Scholar 

  3. J. P. Kennedy and R. F. Storey, Org. Coatings Appl. Polym. Sci., 46, 182 (1982)

    Google Scholar 

  4. Y. Mohajer, D. Tyagi, G. L. Wilkes, R. F. Storey and J. P. Kennedy, Polym. Bull., 8, 47 (1982)

    Article  CAS  Google Scholar 

  5. J. P. Kennedy, V. S. C. Chang, R. A. Smith and B. Ivan, Polym. Bull., 1, 575 (1979)

    Article  CAS  Google Scholar 

  6. E. Y. Lukevits and M. G. Voronkov, Organic Insertion Reaction of Group IV Elements,: translated by M. J. Newlands from Russian, Consultants Bureau, New York, 1966

    Google Scholar 

  7. M. Morton, T.E. Helminiak, S.D. Gadkary and F. Bueche, J. Polym. Sci., 57, 471 (1962)

    Article  CAS  Google Scholar 

  8. N. Hadjichristidis, A. Guyot and L.J. Fetters, Macromolecules, 11, 668 (1978)

    Article  CAS  Google Scholar 

  9. M. Morton and L.J. Fetters, Rubber Chem. Technol., 48, 359 (1975)

    CAS  Google Scholar 

  10. J.P. Kennedy and R.A. Smith, J. Polym. Sci., Poly. Chem. Ed., 18, 1523 (1980)

    CAS  Google Scholar 

  11. J. P. Kennedy and R.R. Smith, Polymer Preprints, 13(2), 710 (1972)

    Google Scholar 

  12. V. S. C. Chang and J.P. Kennedy, Polymer Bull., 5, 379 (1981)

    Article  CAS  Google Scholar 

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Author notes

  1. Tian Ru Fang (Visiting Scientist)

    Present address: Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, Jilin, The People's Republic of China

Authors and Affiliations

  1. Institute of Polymer Science, The Univeristy of Akron, 44325, Akron, OH, USA

    Tian Ru Fang (Visiting Scientist) & Joseph P. Kennedy

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  1. Tian Ru Fang
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  2. Joseph P. Kennedy
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Fang, T.R., Kennedy, J.P. Syntheses and characterization of various polyisobutylene-polystyrene block copolymers. Polymer Bulletin 10, 82–89 (1983). https://doi.org/10.1007/BF00263243

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  • DOI: https://doi.org/10.1007/BF00263243

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