Chemistry — Polymer Molar Mass

\bar{M}_n = \frac{\sum N_i M_i}{\sum N_i}

\bar{M}_w = \frac{\sum N_i M_i^2}{\sum N_i M_i}

PDI = \frac{\bar{M}_w}{\bar{M}_n} \geq 1

\text{degree of polymerisation} = \frac{\bar{M}_n}{M_0}