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Relaxation processes in flexible mesomorphic polymers

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Relaxation in Polymers

Part of the book series: Progress in Colloid & Polymer Science ((PROGCOLLOID,volume 80))

Abstract

Some data on molecular mobilities in flexibles polymers capable of forming thermotropic mesophases are discussed. The main attention is paid to polymers with inorganic backbones, viz. poly(diethylsiloxane) and some polyphosphazenes.

An approach to mesophases in these polymers as to strongly disordered crystals is the basis for consideration. It is supported by the analysis of data on gradual changes in molecular mobilities accompanying phase transitions in poly(diethylsiloxane) from the low-temperature polymorph via the high-temperature crystal to the mesophase. Relaxation phenomena in polyphosphazenes are also treated from the same point of view. Specific features of thermal and mechanical relaxation accompanying mesophase formation in the course of extension of crosslinked poly(diethylsiloxane) films are considered and it is shown that in many aspects this process is similar to crystallization during extension of polymer networks.

An attempt is also made to correlate phase transition in crystalline phases and mesophases of the polymers with relaxation transitions in their amorphous phases.

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Authors and Affiliations

  1. Institute of Synthetical Polymeric Materials, USSR Academy of Sciences, ul. Profsoynznaya, 70, 117393, Moscow

    V. S. Papkov & Yu. P. Kvachev

Authors
  1. V. S. Papkov
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  2. Yu. P. Kvachev
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M. Pietralla W. Pechhold

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© 1989 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG

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Papkov, V.S., Kvachev, Y.P. (1989). Relaxation processes in flexible mesomorphic polymers. In: Pietralla, M., Pechhold, W. (eds) Relaxation in Polymers. Progress in Colloid & Polymer Science, vol 80. Steinkopff. https://doi.org/10.1007/BFb0115433

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  • DOI: https://doi.org/10.1007/BFb0115433

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  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-7985-0832-3

  • Online ISBN: 978-3-7985-1689-2

  • eBook Packages: Springer Book Archive

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