Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1007/s00289-016-1664-9

Ключевые слова: Biopolymer, Gelatin, Starch, Physical gel, Microviscosity, Molecular rotor, Biomolecules, Biopolymers, Gels, Rheology, Temperature distribution, Microviscosities, Molecular rotors, Monoexponential decay, Rheological property, Rotational rheometry, Temperature dependence

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 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.

Журнал: POLYMER BULLETIN

Выпуск журнала: Vol. 73, Is. 12

Номера страниц: 3421-3435

ISSN журнала: 01700839

Место издания: NEW YORK

Издатель: SPRINGER

• Gulnov Dmitry V. (Siberian Fed Univ, Lab Bioluminescent Biotechnol, Krasnoyarsk 660041, Russia)
• Nemtseva Elena V. (Siberian Fed Univ, Lab Bioluminescent Biotechnol, Krasnoyarsk 660041, Russia; Inst Biophys SB RAS, Krasnoyarsk 660036, Russia)
• Kratasyuk Valentina A. (Siberian Fed Univ, Lab Bioluminescent Biotechnol, Krasnoyarsk 660041, Russia; Inst Biophys SB RAS, Krasnoyarsk 660036, Russia)

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