Abstract:
The rheological properties of polyvinylidene fluoride (PVDF) solutions in N-methylpyrrolidone were studied using the rheometric method. It was shown that the viscosity of polymer solutions decreases non-linearly with increasing temperature. The viscosity of the N-methylpyrrolidone used as solvent remains practically unchanged. It was shown that solutions exhibit Newtonian behaviour at concentrations less than 7 wt.%. At higher concentrations, solutions exhibit properties of pseudoplastic fluid.
Keywords:
liquids, structure, viscosity, rheological properties, Newtonian and non-Newtonian behaviour, polyvinylidene fluoride (PVDF), N-methylpyrrolidone, materials performance, temperature dependences.
The work was partially supported by the Ministry of Education and Science of the Russian Federation (State assignment of the Siberian Federal University FSRZ-2020-0012) and the RussianFoundation for Basic Research (grant no. 18-02-00523, no. 20-42-240015 r_a_Krasnoyarsk).
Received: 22.12.2020 Received in revised form: 24.12.2020 Accepted: 05.02.2021
Bibliographic databases:
Document Type:
Article
UDC:
532.13
Language: English
Citation:
Bair B. Damdinov, Victoria A. Danilova, Andrey V. Minakov, Maxim I. Pryazhnikov, “Rheological properties of PVDF solutions”, J. Sib. Fed. Univ. Math. Phys., 14:3 (2021), 265–272