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Electrical conduction in hydrated collagen. I. Conductivity mechanisms
Author(s) -
Bardelmeyer G. H.
Publication year - 1973
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.1973.360121008
Subject(s) - chemistry , activation energy , dissociation (chemistry) , water content , conductivity , self ionization of water , thermal conduction , electrical resistivity and conductivity , adsorption , ion , dissociation constant , logarithm , chemical physics , analytical chemistry (journal) , thermodynamics , organic chemistry , mathematical analysis , biochemistry , physics , receptor , geotechnical engineering , electrical engineering , mathematics , engineering
The electrical conductivity of bovine Achilles tendon with various amounts of adsorbed water was measuredas a function of temperature. The conduction appeared to be fully determined by the water of hydration. The current is probably primarily carried by protons at water contents up to 45% and by small ions at water contents beyond 65%. In both ranges of water content, a linear relation between activation energy and water and content was found. As to the lower range, this is explained by the action of Coulombic forces during the separation of proton–hydroxyl ion pairs. In two regions of water content a linear relation between the logarithm of the pre‐exponential factor and the activation energy was found. There are, however, indications that at certain water contents the dissociation constant of the adsorbed water is several orders of magnitude higher than in liquid water.