Chapter+6+Study+Guide

Chapter+6+Study+Guide - How are viscosity and fluidity...

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Study Guide- Chapter 6 What is the relationship between linear and volumetric thermal expansion? Plot specific volume and entropy as a function of temperature for a pure substance that exhibits a glass transition temperature and one that only exhibits a liquid to crystalline solid transformation. What is the glass transition temperature and explain why it is not a thermodynamic property. How does the glass transition temperature change with cooling rate and why? From a structure point-of-view, explain why crystallization can be difficult in oxide glasses such as SiO 2 and in polymers like polyethylene.
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Study Guide- Chapter 6, Continued What is viscosity and how does it vary with temperature? How does viscosity affect molecular motions in polymers and oxide glasses and thus the glass transition temperature?
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Unformatted text preview: How are viscosity and fluidity related? What are Zachariasen's rules? What are network formers and network modifiers? Know some examples and how they work. How are polymers classified? Explain how a metal or an alloy can be produced with an amorphous structure. What is meant by the term rubber and how is it related to an elastomer? Study Guide- Chapter 6, Continued Explain the differences between a thermoset and a thermoplastic polymer. How does degree of crystallinity and extent of crosslinking affect the temperature dependence of the modulus of a polymer? What controls the end-to-end length in a coiled polymer? In general when most materials are heated they tend to expand. Is this true of rubbers? Why? Know all key terms on page 220....
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Chapter+6+Study+Guide - How are viscosity and fluidity...

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