Specificity and common features of rheological behaviour of liquid and gel-like locust bean gum-gelatin systems

• Type: Article in International Conference Proceedings Book
• Date: 1999

Authors

Alves, MM (Author) Other; Antonov, YA (Author) Other; Maria do Pilar Gonçalves (Author) FEUP

Conference proceedings International

Title: APPLIED MECHANICS AND ENGINEERING, VOL 4, SPECIAL ISSUE: "ICER '99", 1999: PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ENGINEERING RHEOLOGY ICER '99

Pages: 135-139

International Conference on Engineering Rheology (ICER 99)

ZIELONA GORA, POLAND, JUN 27-30, 1999

Indexing

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Other information

Authenticus ID: P-001-5C0

Abstract (EN): In this study, we have attempted to discuss the effect of phase separation phenomena on the rheological properties of liquid and gel-like locust bean gum (LBG)-gelatin systems. Thermodynamic behaviour of such systems indicates the absence of specific interpolymer interaction independently from their state. Liquid-liquid phase separation results in the appearance of a negative deviation of the mixture's viscosity from the logarithmic additivity law and a shear sensitive behaviour, which are indication of droplets deformation under shear. Viscosity dropped sharply and mechanical spectra were practically the same. Rheological properties of gel-like two-phase systems depend strongly an the relative content of gelatin enriched continuous phase. Phase inversion for both types of systems was accurately detected through the change in rheological behaviour.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5