Intersegmental interaction

As for intermolecular and intersegmental interactions, there are three types of them 1-1, 1-2 and 2-2. Following Flory (27,... 

The Characteristic Sjrstem Parameters. The intersegmental interaction potential is defined by a minimum aUiaction e and a repulsion volume v. A quantity 3c is to indi( ate the number of volume dependent degrees of freedom... 

Tagami [200,201] extended the theories of Helfand and coworkers to the case of compressible nonsymmetric polymer mixtures. A slight decrease in the predicted interfacial tension was found, due to the presence of finite compressibility of the polymers. This tendency was particularly apparent in the case of nearly symmetric polymer pairs, when the intersegmental interactions are of ncmlocal nature. The results reduce to the results of Helfand and Sapse in the appropriate limits. However, the resulting equations are much too complicated, although the results do not differ significantly fi-om those predicted by (41). 

A theoretical model has been proposed to treat the concentration dependence of the flexible polymer coil dimension in semidilute solutions by a perfectly reflecting spherical wall around each segment of the coil, which influences the random walk conformation. In a 0-solution the intersegmental interaction is expressed by a potential... 

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