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Unformatted text preview: POLYMER PROCESSING - FALL 2002 NAME:PUT ON LAST PAGE and SIGN HONOR CODE 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 in answers. (32 questions=100 pt. Total) SECTION I: Polymer Structures/Properties. 1. Draw the structural repeat units for the following polymers. 2. Indicate the type of polymerization process used to synthesize each of the structures, i.e. condensation, addition, ring opening. 3. State the relative Tg and/or Tm for each polymer. If a Tm is not expected indicate by NA. (24pts) Polymer Tg Tm 1. poly (ethylene) 2. poly (propylene) 3. poly (ethylene terephthalate) 4. poly (methyl methacrylate) 5. poly (bisphenol A carbonate) 6. poly (ethylene oxide) 7. poly (styrene) 8. poly (vinyl chloride) 9. poly (dimethyl siloxane) 10. poly (caprolactam) (Nylon 6) 11. poly (p-phenylene amide) (Kevlar) 12. poly(phenylene ether sulfone) (Udel) Student Number:___________________________ Concepts. Answer the following statements with TRUE or FALSE . If the statement is false, correct it and/or state the specific reason(s). If you believe a statement can be made TRUE by a simple qualifier, then state it clearly. (12 pts) 13. Output for an extrusion blown film machine is directly dependent upon the melt viscosity of the plastic. 14....
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- Spring '08
- Shear Stress, Trigraph, Ethylene, student number, Ethylene glycol