Weak and strong gels

Strain dependence. Furthermore, in steady shear a strong gel will rupture completely whereas a weak gel will flow, albeit without obeying the Cox-Merz superposition principal. In this case the complex viscosity (r] ) is higher than the flow viscosity ( //). This indicates the presence of weak interactions between the molecules that contribute to the viscosity measured by the non-destructive oscillatory technique but not to the viscosity measured by the destructive flow technique. 

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Spade, C.A. and Volpert, V.A. (2000) Mathematical modeling of interfacial gel polymerization for weak and strong gel effects. Macromol. Theory Simul., 9,... 

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