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Unformatted text preview: POLYMER PROCESSING - FALL 1996 NAME:___________________________ EMA 4666C - EXAM I STUDENT #:______________________ EMA 4666C - POLYMER PROCESSING EXAM I - FALL SEMESTER 1996 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. HONOR CODE : We, the members of the University of Florida community, pledge to hold ourselves and our peers to the highest standards of honesty and integrity. Signature:___________________________________________________________ SECTION I: Polymer Structures/Properties. Draw the repeat units for the following polymers. Indicate the type of polymerization process used to manufacture each of the structures. (20pts) 1. Poly(styrene) 2. Poly(ethylene terephthalate) 3. Poly(hexamethylene adipamide) (Nylon 6,6) 4. Poly(arylamide) {Kevlar®} 1 5. 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. (8 pts) Faster quench rates yield higher volume fraction of crystallites in a semi crystalline polymer such as polypropylene. _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ ___ The ratio of Tg to Tm is approximately 0.67 for most polymers....
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This note was uploaded on 07/17/2011 for the course EMA 4666c taught by Professor Brennan during the Spring '08 term at University of Florida.

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