Estimation of Persistence Length

Fig. 5.14. Profile for intermediate wave vector neutron scattering by a giant micelle solution. Axes chosen (ql q) against q) bring out the change in variation at wave vector qf. This value seperates the rigid regime horizontal part) from the flexible regime steeply decreasing curve at small q). The value of Qi measured leads to an estimate of persistence length /p. In this example, 1 150 A...

Estimation of Persistence Length As we will learn in Section 2.4, the lightscattering experiments for different molecular weights of a semirigid polymer give the estimates of R and M for each fraction of the polymer. From the dependence of R on M, we can estimate Lp. For this purpose, we rewrite Eq. 1.77 into... 

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