Polymer Science, Series A

, Volume 59, Issue 1, pp 1–11 | Cite as

Phase equilibrium and rheology of poly(1-trimethylsilyl-1-propyne) solutions

  • S. O. IlyinEmail author
  • V. V. Makarova
  • M. P. Arinina
  • E. G. Litvinova
  • V. S. Khotimskii
  • V. G. Kulichikhin


The phase equilibrium and rheological properties of poly(1-trimethylsilyl-1-propyne) solutions obtained with tantalum catalysts are studied. For three polymers with different molecular masses, phase diagrams are determined in a number of solvents. From these diagrams, the Hansen solubility parameters of poly(1-trimethylsilyl-1-propyne) are calculated by the method proposed in this work. Dilute solutions of poly(1-trimethylsilyl-1-propyne) behave as Newtonian liquids, whereas the viscosity of viscoelastic concentrated systems decreases as the shear rate grows. The molecular and rheological characteristics of studied poly(1-trimethylsilyl-1-propyne) samples are compared with the samples prepared with NbCl5 catalysts. Poly(1-trimethylsilyl-1-propyne) obtained with a catalytic system involving tantalum pentachloride is characterized by high intrinsic viscosity and solution viscosity compared to poly(1-trimethylsilyl-1-propyne) prepared with niobium catalyst. The difference in properties is due to the dissimilar ratios of cis and trans units in the samples.


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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • S. O. Ilyin
    • 1
    Email author
  • V. V. Makarova
    • 1
  • M. P. Arinina
    • 1
  • E. G. Litvinova
    • 1
  • V. S. Khotimskii
    • 1
  • V. G. Kulichikhin
    • 1
  1. 1.Institute of Petrochemical SynthesisRussian Academy of SciencesMoscowRussia

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