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Activity coefficients of counterions and conformation in kappa‐carrageenan systems
Author(s) -
Rochas C.,
Rinaudo M.
Publication year - 1980
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.1980.360190911
Subject(s) - chemistry , counterion , potassium , electrolyte , activity coefficient , aqueous solution , kappa , carrageenan , optical rotation , conductivity , sodium , crystallography , ion , organic chemistry , biochemistry , linguistics , philosophy , electrode
The optical rotation and the conductivity of kappa‐carrageenans in aqueous solution have been investigated as functions of temperature in the presence of various electrolytes. The activity coefficients of sodium and potassium have been determined and correlated with the conformation. The potassium activity coefficient under ordered conformation is in agreement with a mechanism of dimerization.