Rheological scaling properties of starch solutionsin dimethylsulfoxide

• Autorzy: Ptaszek P. , Ptaszek A. , Łukasiewicz M. , Grzesik M.
• Języki publikacji: EN

Abstrakty

EN

The possibility of scaling viscoelastic properties of starch solutions in relation to biopolymer concentration was presented in this study. An application of this empirical method enabled to widen the observation horizon of viscoelastic properties. It was also determined that the scope of its applicability is limited by amylose content in the solution. In high amylose solutions, for which up to 40% (w/w) concentration was the highest one obtained, calibration caused the formation of master curve in the widest frequency range. Determined values of scaling coefficients aC changed exponentially in starch concentration function in the solution. For waxy starch solutions of maximum concentration equal to 20% (w/w), scaling did not significantly widen the observation window. Based on master curves constructed in such way, continuous relaxation spectra H([lambda]) were determined using Tikhonov regularisation method. Their structure indicates advantageous of viscous elements in the process of viscoelastic phenomena formation.

Słowa kluczowe

EN

viscoelasticity; Maxwell model; continuous relaxation spectra; starch

PL

lepkosprężystość; model Maxwella; skrobia

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2012
• Tom: Vol. 33, nr 3
• Strony: 323--333
• Opis fizyczny: Bibliogr. 38 poz., rys.

Twórcy

autor

Ptaszek P.

autor

Ptaszek A.

autor

Łukasiewicz M.

autor

Grzesik M.

• Agricultural University of Krakow, Faculty of Food Technology, Balicka 122, 30-149 Kraków, Poland

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