Critical Exponents of Kappa Carrageenan in the Coil-Helix and Helix-Coil Hysteresis Loops
Loading...
Date
2009
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Taylor & Francis Inc
Open Access Color
OpenAIRE Downloads
OpenAIRE Views
Abstract
The steady-state fluorescence technique was used to study coil-helix (sol-gel) and helix-coil (gel-sol) transitions of the kappa carrageenan-water system with various carrageenan contents. Fluorescence (I) and scattered light (I-sc) intensities were measured against temperature to determine critical phase transition temperatures and exponents. It was observed that the coil-helix transition temperatures T-ch were much lower than the helix-coil (T-hc) transition temperatures due to the hysteresis of the phase transition loops. The gel fraction exponent (beta) was measured and found to be in accord with the classical Flory-Stockmayer model.
Description
Keywords
Carrageenan, Critical exponent, Fluorescence, Hysteresis, Transition temperature
Turkish CoHE Thesis Center URL
Fields of Science
Citation
19
WoS Q
N/A
Scopus Q
Q3
Source
Volume
48
Issue
4
Start Page
812
End Page
822