Excluded-volume strength

The quantity / c has the same dimension as / and can be regarded as the excluded-volume strength of a continuous chain. 

The parameter v is also named the excluded-volume strength in die subsequent presentation, diough it no longer has the dimension of volume. 

The excluded-volume variable introduced in eq 1.11 has been defined for the Edwards continuous chain with length L and excluded-volume strength V. Since all the theoretical expressions presented above for or and as arc concerned with such chains, the variable appearing in them is the one so defined. However, though identical notation was used, the z that appeared in... 

Ref. [9]). However, the following difference has to be noted. In the former, i/ is an essentially fixed parameter (usually set equal to 0.6 for non-0 solvents) and Nc is related to the excluded-volume strength / , whereas, in the latter, e (which corresponds to 21/ — 1 in the former) is treated as an adjustable parameter associated with solvent quality. Anyway it is clear that these theories are too... 

In these equations, / is the excluded-volume strength, a the bond length (equal to the diameter of one bead), and z an excluded-volume variable, which reduces to z defined previously when 2q is set equal to a. The coefficient K nn) is essentially zero for ni< < 1 and increases to the familiar coil value 4/3 with... 

Electrostatic contributions to chain stiffness and excluded-volume strength 29... 

The scaled excluded-volume parameter z defined by eqn [34] can be evaluated for a given polymer + solvent S3 tem using the HW or KP parameters and the excluded-volume strength determined from (S ) data. 

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