Chapter 14, Problem 14A.2E

Interpretation Introduction

Interpretation:

Dispersity of a sample of a synthetic polymer has to be determined.

Concept introduction:

Dispersity is the ratio of number average molar mass and weight average molar mass.

Dispersity of a sample of a synthetic polymer is determined by using following formula,

  $\begin{array}{l}\stackrel{\text{-}}{\text{D}}\text{=}\frac{\stackrel{\text{-}}{{\text{M}}_{\text{w}}}}{\stackrel{\text{-}}{{\text{M}}_{\text{n}}}}\\ \stackrel{\text{-}}{{\text{M}}_{\text{n}}}\text{=Number average molar mass}\\ \stackrel{\text{-}}{{\text{M}}_{\text{w}}}\text{=Weight average molar mass}\end{array}$