Materials Science and Engineering: An Introduction

Published by Wiley
ISBN 10: 1118324579
ISBN 13: 978-1-11832-457-8

Chapter 14 - Polymer Structures - Questions and Problems - Page 577: 14.2c

Answer

$m = 114.11 g/mol$

Work Step by Step

Required: Compute repeat unit molecular weights for nylon 6,6. Solution: From Table 14.3, each repeat unit consists of 4 carbons, 6 hydrogens, 2 oxygens and 2 nitrogens. $A_{C}, A_{H}, A_{O},$ and $ A_{N}$ represent the atomic weights of carbon, hydrogen, oxygen and nitrogen, respectively. $m = 4(A_{C}) + 6(A_{H}) + 2(A_{O}) + 2(A_{N}) = 4(12.011 g/mol) + 6(1.008 g/mol) + 2(16.00 g/mol) + 2(14.007 g/mol)= 114.11 g/mol$
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