For all the studied samples, amplitude sweep
(AS) tests were performed, in order to determine
the linear viscoelastic (LVE) domain. Within the
limits of this domain, the structure of the sample
remains stable, not being affected by the
increased effort or strain applied. Under these
determined conditions, frequency sweeps can be
applied at constant values of stress or strain
within the LVE limits. Also, the values of the
limits of the linear viscoelastic domain give an
insight into system stability, against syneresis, for
instance14. A relatively quick amplitude sweep
experiment can indicate the strength of a gel by
means of storage modulus (G’) characteristic
values. This can therefore be used to optimize
dosing of gelation agents and other components.