EMA4161-Fall_2011_Exam1reva

EMA4161-Fall_2011_Exam1reva - Student Number:_...

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Student Number:___________________________ 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. SECTION I: Polymer Structures/Properties. (4 pts each/24 pts total) 1. Indicate the type of polymerization process used to synthesize each of  the structures, i.e. condensation (C), addition (A), or ring opening (RO). 2. State the relative Tg and/or Tm for each polymer.  If either is not  measurable indicate by NA.   3. Indicate stereoisomers Polymer Process (2pt) Tg (1pt) Tm (1pt) 1. Poly(dimethyl siloxane) 2. Poly(bis phenol A carbonate) 3. poly(ethylene) 4. Poly(p-phenylene amide) - Kevlar 5. poly(caprolactam) (Nylon 6) 6. Poly(butadiene) Indicate stereoisomer 1EMA 4161C Fall 2011 Exam 1 ver a
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Student Number:___________________________ SECTION II: Concepts. (2pts ea/12pts total) 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.   HINT:  Normally one word can be modified to correct false statements. 7 . The   Degree   of   Polymerization   rises   very   slowly   in   a   condensation   polymerization  reaction. 8
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EMA4161-Fall_2011_Exam1reva - Student Number:_...

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