Question
A polymer sample combines five different molecular-weight fractions, each of equal weight. The molecular weights of these fractions increase from 20,000 to 100,000 in increments
A polymer sample combines five different molecular-weight fractions, each of equal weight. The molecular weights of these fractions increase from 20,000 to 100,000 in increments of 20,000.
Calculate Mn and Mw.
Does this sample have a broad or narrow molecular weight distribution?
Step by Step Solution
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Step: 1
The weight fractions of five polymers are equal so w 1 w 2 w 3 w 4 w 5 15 ...
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Step: 2
Step: 3
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Essentials of Materials Science and Engineering
Authors: Donald R. Askeland, Wendelin J. Wright
3rd edition
978-1111576868, 1111576866, 978-1285677620, 1285677625, 978-1111576851
