The Molecular Weight and Staudinger Index of Coil-like Molecules

The Molecular Weight and Staudinger Index of Coil-like Molecules 

According to model calculations, the factor q possesses a value of 

43 for a sphere-like coil and a value of 2.18 for an ellipsoid-like coil. Insertion of equation (9-15) in (9-128) gives 

In the theta state, the hydrodynamic volume (F )e is proportional to the third power of the radius of gyration, i.e., it is possible to write (I ) = Q Rg 0 - Equation (9-152) then becomes 

Equation (9-153) describes the relationship between the Staudinger index [f/] of nondraining coils as a function of the molecular weight and the radius of gyration. Two methods can be used to obtain [ /] as a function of the molecular weight alone  

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