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3720EXAM1KEYSP08 - SCHOOL OF POLYMER TEXTILE FIBER...

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SCHOOL OF POLYMER, TEXTILE & FIBER ENGINEERING PTFE 3720, EXAM 1 KEY SP/08 Dr. Fred L. Cook February 26, 2008 HONOR STATEMENT By my signature below, I certify that I have neither given nor received aid in completing this exam: __________________________ _________________ Signature Date __________________________ Printed Name NOTE, READ FIRST !! –ALL 90 (QUICK-ANSWER!) QUESTIONS COUNT TWO (2 ) POINTS EACH, FOR A TOTAL OF 180 POSSIBLE POINTS ON THE EXAM. OBVIOUSLY, ALLOCATE YOUR TIME PER QUESTION WISELY. READ CAREFULLY, GOOD LUCK, AND DO YOUR BEST!!! FRED
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PTFE 3720 EXAM 1, KEY, SP/08 (COOK) 1. Which sector of the PFFP (Polymer/Fiber/Polymer-Fiber Products) Industrial Complex has been bolstered substantially in GA by the movement into the state of both research/manufacturing facilities by the Kimberly-Clark Co.? ____ a. Portland Cement Manufacturers __X__ b. Nonwoven Producers ____ c. Post-Consumer Carpet Dealers ____ d. Polymer Chip Producers ____ e. None of the Above 2 . Producers of artificial hearts/arteries are part of the of the generic Geotextiles sector of the PFFP Complex. T _________ F ____X_____ 3. The terms “ poly-mer” and “ oligo-mer ” are derived from the ancient Greek language. T _______ F ___X______ 4. The principal difference between a “polymer” of a certain backbone repeat unit and its corresponding “oligomer” is that the polymer has: _____ a. A different chemical structure ____ b. Up-down alternating units _____ c. A shorter chain length __X__ d. A longer chain length _____ e. None of the above 5. To be classified as a “fiber” material, the physical structure must have a length-to- width ratio of at least __100______ : 1. 6. Which area is NOT a major one in cotton woven fabric production: _____ a. Coloration _____ b. Finishing __X___ c. Fiber Spinning _____ d. Yarn Winding _____ e. None of the Above 7. The SE state with the least industrial carpet/textile/apparel employment is: ____ a. Georgia ____ b. North Carolina __X__ c. Alabama ____ d. South Carolina
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8. The number of bonding sites on a single monomer is referred to as the _functionality_____________ of the molecule. 9. A classical “ A-B” type of monomer has the same reactive functional group at both ends of the molecule. T _________ F ____X______ In the next set of questions (10-20), match the major fiber polymer type with the correct chemical functional group that is the polymer backbone linkage holding the polymer backbone together (use letters to designate your answers): a. -COO-(ester) b. -CONH- (amide) c. -NHCOO- (urethane) d. -COC- (ether) e. -C-C- (alkyl carbon) f. -P(O) – O – (phosphazene) g. None of the Above 10. Kevlar© __b____ 11. Nylon 6,10 __b___ 12. Lycra© __c____ 13. Polybutylene Olefin __e____ 14. Wool __b____ 15. Polyacrylonitrile Acrylic __e____ 16. Polyethylene Olefin __e____ 17. Dynel© Modacrylic __e____ 18. Dacron© __a____ 19. Viscose Rayon __d____ 20. Spectra© Olefin __e____
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21. In a typical AA-BB step-growth polymerization, if a stoichiometric balance of the two monomer reactants is not established at the onset of polymerization, the result will be Monomer starvation, and thus low average MW polymer produced___________________ 22. The fastest-growing face fiber (percentage-wise) in the U. S. tufted carpet market over the past five years is: ____ a. Nylon ____ b. Wool ____ c. Polyester __X__ d. Polypropylene ____ e. None of the Above 23. A heavily cross-linked polymer is invariably a “thermoset” because of :
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