Molecular weight data for some polymer are tabulated here. Compute the following: (a) The number-average molecular weight

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Molecular weight data for some polymer are tabulated here. Compute the following:

(a) The number-average molecular weight

(b) The weight-average molecular weight.

(c) If it is known that this material's degree of polymerization is 477, which one of the polymers listed in Table 14.3 is this polymer? Why?

Molecular Weight Range g/mol Xị Wi 0.05 0.02 8,000–20,000 0.08 20,000–32,000 0.15 0.17 32,000–44,000 0.21 44,000

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Materials Science and Engineering An Introduction

ISBN: 978-1118324578

9th edition

Authors: William D. Callister Jr., David G. Rethwisch

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Question Posted: Feb 13, 2018 09:03 AM

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Molecular weight data for some polymer are tabulated here. Compute the following: (a) The number-average molecular weight

Question:

Molecular Weight Range g/mol Xị Wi 0.05 0.02 8,000–20,000 0.08 20,000–32,000 0.15 0.17 32,000–44,000 0.21 44,000–56,000 0.28 0.29 0.23 56,000-68,000 0.18 68,000–80,000 0.10 0.16 0.05 0.03 80,000-92,000

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Materials Science and Engineering An Introduction

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