Fall_1999_EXAM_1 - POLYMER PROCESSING - FALL 1999 EMA 4666C...

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POLYMER PROCESSING - FALL 1999 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(propylene) b. poly(styrene) c. poly(n-butyl acrylate) d. poly(bis phenol A carbonate) e. poly(hexamethylene adipamide) f. poly(dimethylsiloxane) 1
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POLYMER PROCESSING - FALL 1999 NAME:___________________________ EMA 4666C - EXAM I STUDENT #:______________________ 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 Mw/Mn. b. The thermal coefficient of volummetric expansion is inversely proportional to molar mass for a given polymer, e.g., polyethylene.
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Fall_1999_EXAM_1 - POLYMER PROCESSING - FALL 1999 EMA 4666C...

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