Calculate Mn, Mw and the polydispersity index for a hypothetical polymer sample that contains equimolar amounts of  polymer  having  molecular  weights of  30,000, 60,000,  and 90,000

Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter30: Capillary Electrophoresis, Electrochromatography, And Field-flow Fractionation
Section: Chapter Questions
Problem 30.3QAP
icon
Related questions
Question

Calculate Mn, Mw and the polydispersity index for a hypothetical polymer sample that contains equimolar amounts of  polymer  having  molecular  weights of  30,000, 60,000,  and 90,000.

Expert Solution
Step 1

The molecular weight of a polymer is an important characteristic that determines its physical and mechanical properties. The average molecular weight (Mn) and weight average molecular weight (Mw) are commonly used to describe the molecular weight distribution of a polymer sample. The polydispersity index (PDI) is another important parameter that provides information on the spread of the molecular weight distribution.

 

In this response, we will calculate the average molecular weight (Mn), weight average molecular weight (Mw), and polydispersity index (PDI) for a hypothetical polymer sample that contains equimolar amounts of polymer having molecular weights of 30,000, 60,000, and 90,000

steps

Step by step

Solved in 3 steps with 1 images

Blurred answer
Knowledge Booster
Analytical Separations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning