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Fall 2000 EXAM 1 - POLYMER PROCESSING FALL 2000 EMA 4666C...

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POLYMER PROCESSING - FALL 2000 NAME:___________________________ EMA 4666C - EXAM I STUDENT #:______________________ INSTRUCTIONS: Read the entire exam carefully . Answer every question to the best of your ability, based upon the available information. State all assumptions you use in answers. SECTION I: Polymer Structures/Properties. 1. Draw the repeat units for the following polymers. 2. Indicate the type of polymerization process used to manufacture each of the structures. 3. State the relative Tg and/or Tm for each polymer (24pts) Polymer Structural Repeat Unit Process Tg Tm a. poly(ethylene) b. poly(styrene) c. poly(methyl methacrylate) d. poly(caprolactam) e. poly(hexamethylene adipamide) f. poly(dimethylsiloxane)
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NAME:___________________________ 4. Concepts. Answer the following statements with TRUE or FALSE . If the statement is false, state the reason(s). If you believe a statement can be made TRUE by a simple qualifier, then state it clearly. (12 pts) a. Tan δ is the ratio of the storage modulus to the loss modulus (E’/E”). b. The intrinsic viscosity is inversely proportional to the molar mass raised to the 2 power for a given polymer, e.g., polyethylene in a good solvent.
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