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Fall 99 EXAM 3 - POLYMER PROCESSING FALL 1999 EMA 4666C...

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POLYMER PROCESSING - FALL 1999 NAME:___________________________ EMA 4666C - EXAM III 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. (24 Pts) 1. Indicate the type of polymerization process used to manufacture each of the structures: addition, step growth or ring opening. 2. State the relative Tg and/or Tm for each polymer, assume atactic for vinyl polymers. Polymer Process Tg Tm a. poly (ethylene) b. poly (propylene) c. poly (ethylene terephthalate) d. poly (methyl methacrylate) e. poly (bisphenol A carbonate) f. poly (ethylene oxide) g. poly (styrene) h. poly (vinyl chloride) i. poly (dimethyl siloxane) j. poly (butadiene) k. poly (phenylene oxide) l. poly (tetrafluoroethylene) m. poly (bisphenol – A ether imide) (Ultem) n. poly (hexamethylene adipamide) (Nylon 6,6) o. poly (p-phenylene amide) (Kevlar) p. poly(phenylene ether sulfone) (Udel)
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POLYMER PROCESSING - FALL 1999 EMA 4666C - EXAM III SECTION II: Polymer Structures/Property Relationships. (12 pts) 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. 2a. The Heat Distortion Temperature is directly proportional to the Melt Temperature of a Glassy thermoplastic, e.g., polycarbonate. 2b. Parison expansion pressure is inversely proportional to the natural log of the temperature (Assume Newtonian Flow Behavior).
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