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Quantitative aspects of chain extension of telechelics

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Summary

Quantitative aspects of chain extension of telechelics have been studied. Molecular weight independent characteristic terms were defined and simple expressions were derived for number average extension, \(\bar E_n = \bar F_n /(2 - \bar F_n )\) , and number average degree of extension, \(\overline {DE} _n = 2/(2 - \bar F_n )\), as a function of number average functionality (¯Fn) of telechelic prepolymers. Analysis of these expressions indicate that Ēn and ¯DEn are enormously sensitive to insignificant changes in ¯Fn close to ideal ¯Fn = 2.0. Molecular weight of the extended polymer (¯Mr) has also been calculated considering ¯Fn, number average molecular weight of the prepolymer (¯Mn), and molecular weight of the extender (Me).

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Author notes

  1. Béla Iván (Visiting Scientist)

    Present address: Central Research Institute for Chemistry of the Hungarian Academy of Science, POB 17, 1525, Budapest, Hungary

Authors and Affiliations

  1. Institute of Polymer Science, University of Akron, 44325, Akron, Ohio, USA

    Béla Iván (Visiting Scientist) & Joseph P. Kennedy

Authors
  1. Béla Iván
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  2. Joseph P. Kennedy
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Iván, B., Kennedy, J.P. Quantitative aspects of chain extension of telechelics. Polymer Bulletin 2, 351–356 (1980). https://doi.org/10.1007/BF00266713

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  • DOI: https://doi.org/10.1007/BF00266713

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