Phase equilibrium and rheology of poly(1-trimethylsilyl-1-propyne) solutions
作者： S. O. Ilyin , V. V. Makarova , M. P. Arinina , E. G. Litvinova , V. S. Khotimskii
DOI: 10.1134/S0965545X17010059
关键词: Shear rate 、 Viscoelasticity 、 Rheology 、 Polymer 、 Tantalum 、 Viscosity 、 Polymer chemistry 、 Materials science 、 Intrinsic viscosity 、 Hildebrand solubility parameter 、 Chemical engineering
摘要: The phase equilibrium and rheological properties of poly(1-trimethylsilyl-1-propyne) solutions obtained with tantalum catalysts are studied. For three polymers different molecular masses, diagrams determined in a number solvents. From these diagrams, the Hansen solubility parameters calculated by method proposed this work. Dilute behave as Newtonian liquids, whereas viscosity viscoelastic concentrated systems decreases shear rate grows. characteristics studied samples compared prepared NbCl5 catalysts. Poly(1-trimethylsilyl-1-propyne) catalytic system involving pentachloride is characterized high intrinsic solution to niobium catalyst. difference due dissimilar ratios cis trans units samples.
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