The poly dispersity index `(PDI)` is for - natural polymers

Natural polymers are

Natural polymers are:

Natural polymer is:

The poly dispersity index (PDI) of a polymer is ( overline(M_(w)) = weight average molecular mass and overline(M_(n)) number average molecular mass)

If M_w is the weight-average molecular weight and M_n is the number, the poly dispersity index (PDI)of the polymer is given by

If bar(M)_(w) is the weight -average molecular weight and bar(M)_(n) is the number -average molecular weight of polymer, the poly dispersity index (PDI) of the polymer is given by

If overline(M)_(w) is the weight average molecular weight and overline(M)_(n) is the number average molecular weinght of a polyme, the poly dispersity index (PDI) of the polymer is given by

If overline(M)_(e) is the weight average molecular weight and overline(M)_(e) is the number average molecular weight of a polymer, the poly dispersity index (PDI) of the polymer is given by