Coils universality classes

The global point of view is completely different. Here we try to omit the details of the chain structure as much as possible and to extract simple, universal, features which will remain true for a large class of polymer chains. An example will make this statement more precise Consider a dilute solution of separate coils in a good solvent. The radius of gyration of one coil Rg depends on the degree of polymerization, N, and we know from Flory that... 

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