TITLE

Low field Overhauser images of the formation process of a hydrogel

AUTHOR(S)
Barros, Wilson; de Souza, Ricardo E.; Engelsberg, M.; Golman, Klaes; Ardenkjær-Larsen, J. H.
PUB. DATE
January 2002
SOURCE
Applied Physics Letters;1/7/2002, Vol. 80 Issue 1, p160
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The gelation of sodium alginate by calcium ions is studied by proton-electron double resonance imaging in a magnetic field of only 16 mT using a newly developed free radical. The high sensitivity of the Overhauser enhancement to small variations in water mobility permits the detection of minute changes in gel composition. Spatial inhomogeneity and temporal evolution of this, and possibly other processes involving diffusion and chemical reaction, could be accurately monitored by this technique.
ACCESSION #
5792107

 

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