Molecular weight data for some polymer are tabulated here. Compute (a) The number-average molecular weight, and (b)
Question:
Molecular weight data for some polymer are tabulated here. Compute
(a) The number-average molecular weight, and
(b) The weight-average molecular weight.
(c) If it is known that this material's degree of polymerization is 710, which one of the polymers listed in Table 14.3 is this polymer? Why?
Transcribed Image Text:
Molecular Weight Range g/mol Wi 15,000-30,000 0.04 0.01 0.07 30,000-45,000 0.04 0.11 45,000-60,000 0.16 60,000-75,000 0.26 0.24 75,000-90,000 0.27 0.24 0.16 0.12 90,000–105,000 105,000-120,000 0.08 0.12 120,000–135,000 0.03 0.05
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a From the tabulated data we are asked to compute the numberaverage molecular weight This is carried out be Molecular wt Range Mean M i x i x i M i 15...View the full answer
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Related Book For
Fundamentals of Materials Science and Engineering An Integrated Approach
ISBN: 978-1118061602
4th Edition
Authors: David G. Rethwisch
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