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Title: Gelation of aqueous pectin solutions: A dynamic light scattering study
Authors: Narayanan, Janaky
Deotare, Vinod W.
Bandyopadhyay, Ranjini
Sood, A.K.
Issue Date: 2002
Publisher: Elsevier B.V.
Citation: Journal of Colloid and Interface Science, 2002, Vol.245, p267–273
Abstract: We report the dynamic light scattering study of the gelation of aqueous solutions of the biopolymer, pectin, induced by the addition of calcium chloride. The time correlation function data are analyzed under the framework of the coupling model. As the solution enters the semidilute regime where gelation sets in, the relaxation process shows a stretched exponential behavior. The stretching exponent decreases and the characteristic time of the stretched exponential diverges as the system evolves to a gel. Aqueous pectin solutions in the presence of 0.1 M NaCl show similar behavior. Thus, the molecular relaxation modes of pectin solutions can be well described by the coupling model.
Description: Restricted Access.
ISSN: 0021-9797
1095-7103 (online)
Copyright: 2002 Elsevier B.V.
Appears in Collections:Research Papers (SCM)

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