Small Angle Scattering from Polymers in

Small angle scattering from polymers in solution. 

Let us consider a binary mixture of species noted A and B. The incompressibility rule implies that the density is a constant (see figure 2)  

Note that in equation 3-18, the scattering length density can differ markedly from the nuclear density. In figure 3 are reported the scattering len h density of common solvents and monomer units of conjugated polymers. For a chain containing only one kind of monomer unit the contrast factor is ven by  

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