Thickness of the Domain Interface

Finally, A Sconformation arises from the constraints that the blocks of the copolymer are restricted to domains. Because chains in the polymer melt behave as if they were ideal, i.e. as if there were no excluded volume effects, then it is frequently argued that Gaussian statistics should be applied to these domains of pure A and B and provided the inequality L Nk holds good 

Meier has estimated the thickness of the boundary layer to be given by 

There has been considerable interest in the estimation of the interfacial thickness but experiment has shown it to be of the order of a few monomer units. 

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