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Chemical and Process Engineering

Tytuł artykułu

Rheological scaling properties of starch solutionsin dimethylsulfoxide

Autorzy Ptaszek, P.  Ptaszek, A.  Łukasiewicz, M.  Grzesik, M. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
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
PL lepkosprężystość   model Maxwella   skrobia  
EN viscoelasticity   Maxwell model   continuous relaxation spectra   starch  
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.
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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