Fall 2004 QUIZ 2 - POLYMER PROCESSING - FALL 2004 PUT YOUR...

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Unformatted text preview: POLYMER PROCESSING - FALL 2004 PUT YOUR NAME ON LAST PAGE and SIGN HONOR CODE EMA 4666C - QUIZ 2 STUDENT ID NO.:______________________ 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. (11 questions, 15 pts 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. Polymer Structural Repeat Unit Process Tg Tm 1. poly(methylmethacrylate) 2. poly(dimethylsiloxane) 3. poly(caprolactam) (Nylon 6) 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. 4 . The shift factor (WLF) decreases linearly with increasing temperature. 5 . Crystals grown at the maximum crystalline growth rate temperature have the longest stem length in a single crystal lamellae. Student Number:___________________________ EMA 4666C Fall 2004 Exam 2 2 Student Number:___________________________ Graphical Relationships: A. SHOW ALL EQUATIONS. B. EACH GRAPH SHOULD BE A LINEAR RELATIONSHIP. C. LABEL ALL AXES WITH THE APPROPRIATE UNITS. D. CLEARLY STATE ALL ASSUMPTIONS ....
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Fall 2004 QUIZ 2 - POLYMER PROCESSING - FALL 2004 PUT YOUR...

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