Relaxation of the Macromolecular Conformation

Now one can find the quantity yik + yki and then, according to the first equation from (7.16), write down the relaxation equation for the moment 

We remind the reader that the equations are valid for the case when m — 0, C 0,CB 0,CE 0. 

The mean size and form of the macromolecular coil is characterised by the set of the tensors (pf / , a = 1,2. N. To describe relaxation of macromolecular coil, it is convenient to use the non-dimensional tensor variables 

We have to take into account that there are two competing mechanisms of conformational relaxation, whereas it is clear that only one of them is realised for a given system with a certain values of parameters B, x and ip-After having compared the relaxation times of the two competing mechanisms (Section 4.2.3), we ought to conclude that there is a certain value of the parameter x 0.1 at which the mechanism of relaxation changes. So, we have to consider two cases. 

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