IE330 chp 8 hw - Amanda Herrin IE330 - Chapter 8 HW Review...

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Amanda Herrin IE330 - Chapter 8 HW Review Questions: 1, 2, 3, 4, 5, 9, 10, 12, 20, 21 8.1) What is a polymer? A polymer is a compound comprised of long-chain molecules that consist of repeating units, called mers, connected end to end. 8.2) What are the three basic categories of polymers? Thermoplastics, Thermosetting polymers, and Elastomers 8.3) How do the properties of polymers compare with those of metals? Polymers tend to have lower strength, hardness, stiffness, density, and temperature resistance in comparison to metals. Polymers also have low electrical and thermal conductivity. 8.4) What does the degree of polymerization indicate? It indicates the average number of mers or repeating units in the polymer molecule. 8.5) What is cross-linking in a polymer, and what is its significance? Cross-linking is the formation of connections between the long-chain molecules in a polymer. It causes the polymer structure to be permanently altered. If the amount of cross-linking is low, the polymer is transformed into an elastomer. If cross-linking is
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This note was uploaded on 10/22/2010 for the course ECON 201 taught by Professor Baker during the Spring '07 term at University of Tennessee.

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IE330 chp 8 hw - Amanda Herrin IE330 - Chapter 8 HW Review...

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