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    Contrasting relationship between macro- and microviscosity of the gelatin- and starch-based suspensions and gels [Text] / D. V. Gulnov, E. V. Nemtseva, V. A. Kratasyuk // Polym. Bull. - 2016. - Vol. 73, Is. 12. - P3421-3435, DOI 10.1007/s00289-016-1664-9. - Cited References:42. - Authors thank Alexander Kheruvimov (REC "Composite Materials and Structures", SUSU, Chelyabinsk, Russia) for assistance in rheological experiments. The research was partially supported by the grants No. 11.G34.31.0058 and 1762 from The Ministry of Education and Science of the Russian Federation and by the state budget allocated to the fundamental research at the Russian Academy of Sciences (Project No. 01201351504). . - ISSN 0170-0839. - ISSN 1436-2449
РУБ Polymer Science
Рубрики:
FLUORESCENT MOLECULAR ROTORS
   INTRACELLULAR VISCOSITY

   DRUG-DELIVERY

Кл.слова (ненормированные):
Biopolymer -- Gelatin -- Starch -- Physical gel -- Microviscosity -- Molecular -- rotor
Аннотация: The problem of correlation between rheological properties in macro- and micro- scales of media with biopolymers of polypeptide (gelatin) and polysaccharide (starch) nature is investigated. The viscosity of the biopolymer solutions with concentrations 0.5-5 wt% was estimated by standard rotational rheometry technique and with fluorescent molecular rotor at 15-50 A degrees C. Opposite trends were observed for relationship between microviscosity eta (m) and macroviscosity eta for two biopolymers: eta (m) << eta for gelatin and eta (m) >> eta for starch solutions. The temperature dependence of eta (m) followed the monoexponential decay law in all samples over the whole temperature range indicating insensitivity of microviscosity to gel mesh melting under heating. The dissimilarity of macro- and micro-rheological properties of gelatin and starch-containing media is discussed in terms of difference in architecture of the gels.

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Держатели документа:
Siberian Fed Univ, Lab Bioluminescent Biotechnol, Krasnoyarsk 660041, Russia.
Inst Biophys SB RAS, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Gulnov, Dmitry V.; Nemtseva, Elena V.; Kratasyuk, Valentina A.; Ministry of Education and Science of the Russian Federation [11.G34.31.0058, 1762]; Russian Academy of Sciences [01201351504]

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