A detailed examination thermodynamic theory of polymer blends can be tested in the case a polymers A and B (the degree of polymerization of B is 40, i.e., NB = 20). Assuming the value of Flory Huggins interaction parameters X is 0.1. Please

(b) Calculate and plot (on a semi-log plot) the normalized entropy of mixing, per site as a function of the degree of polymerization (DP), say NA = 1, 2, 3, 4, 5, 10, 20, 50, 100, 300 and 500 at A = 0.5.