Enhanced electrorheological activity of porous chitosan particles.

Autor: Kuznetsov NM; National Research Center 'Kurchatov Institute', 1, Akademika Kurchatova pl., Moscow, 123182, Russia. Electronic address: Kuznetsov_NM@nrcki.ru., Zagoskin YD; National Research Center 'Kurchatov Institute', 1, Akademika Kurchatova pl., Moscow, 123182, Russia. Electronic address: Zagoskin_YD@nrcki.ru., Vdovichenko AY; National Research Center 'Kurchatov Institute', 1, Akademika Kurchatova pl., Moscow, 123182, Russia; Enikolopov Institute of Synthetic Polymeric Materials of Russian Academy of Sciences, 70 Profsoyuznaya, Moscow, 117393, Russia. Electronic address: Vdovichenko_AY@nrcki.ru., Bakirov AV; National Research Center 'Kurchatov Institute', 1, Akademika Kurchatova pl., Moscow, 123182, Russia; Enikolopov Institute of Synthetic Polymeric Materials of Russian Academy of Sciences, 70 Profsoyuznaya, Moscow, 117393, Russia. Electronic address: Bakirov_AV@nrcki.ru., Kamyshinsky RA; National Research Center 'Kurchatov Institute', 1, Akademika Kurchatova pl., Moscow, 123182, Russia; Moscow Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny, Moscow Region, 141700, Russia; Federal Research Centre 'Crystallography and Photonics' of Russian Academy of Sciences, 59 Leninskii pr-t, Moscow, 119333, Russia. Electronic address: Kamyshinskiy_RA@nrcki.ru., Istomina AP; National Research Center 'Kurchatov Institute', 1, Akademika Kurchatova pl., Moscow, 123182, Russia. Electronic address: Istomina_AP@nrcki.ru., Grigoriev TE; National Research Center 'Kurchatov Institute', 1, Akademika Kurchatova pl., Moscow, 123182, Russia; Moscow Institute of Physics and Technology, 9 Institutskiy per., Dolgoprudny, Moscow Region, 141700, Russia. Electronic address: Grigoriev@nrcki.ru., Chvalun SN; National Research Center 'Kurchatov Institute', 1, Akademika Kurchatova pl., Moscow, 123182, Russia; Enikolopov Institute of Synthetic Polymeric Materials of Russian Academy of Sciences, 70 Profsoyuznaya, Moscow, 117393, Russia. Electronic address: Chvalun_SN@nrcki.ru.
Jazyk: angličtina
Zdroj: Carbohydrate polymers [Carbohydr Polym] 2021 Mar 15; Vol. 256, pp. 117530. Date of Electronic Publication: 2020 Dec 26.
DOI: 10.1016/j.carbpol.2020.117530
Abstrakt: Novel porous filler for electrorheological fluids was fabricated from chitosan via freeze drying technique. An exceptional electrorheological effect was discovered in suspensions of polydimethylsiloxane (silicone oil) filled by highly porous chitosan particles. The electrorheological activity was studied by rotational rheometry and visualized by optical microscopy. High porosity of the filler allows preparing highly efficient electrorheological fluids at rather low (< 1 wt%) concentration of dispersed phase. The mechanism of chain-like structure formation was considered. The electrorheological behavior of suspensions and the filler structural organization at different concentration were comprehended in terms of dielectric properties. The rheological data were approximated by Bingham and Cho-Choi-Jhon equations. The sedimentation stability of chitosan suspensions in polydimethylsiloxane was significantly affected by particles porosity.
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Databáze: MEDLINE
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