exam3spr2000 - II ENGSC 3313 Spring 2000 TESTJ ~ Name ~...

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(" ) , II',. ; ENGSC 3313, Spring 2000 TESTJ Name ~ Answer all 10 Questions. 2 Doints each. Polycarbonates are strong, tough, transparent polymers that are used in lenses and as bullet proof "glass." A polycarbonate polymerization reaction is shown below. What type of reaction is this? Please defend your answer. " -" , ,"c " :.. ~t~i~~~~ If;,~. .o*C' O ".0. .,~,~. ." , 1o~e."o .,.,. .".,.",;i.~~.",. .~,,~~;;.I1'--.'. ' . .'; We discussed two reactIon types. Cham additIon IS. , : ." :.~3:.:,:7.:~;.;;.'.;;~i~.~~~(t;;.:".' characterized by a free radical initiation, propagation . and tennination which are not present here. Condensation reactions are characterized by the generation of a small molecule such as HCl or H2O which is condensed to drive the equilibrium to the right. H Condensation The figure below shows a mer of polymethyl methacrylate (PMMA) which is marketed under the trade name Plexiglas. The bulky side groups prevent crystallization which allows PMMA to be transparent. Please give the mass per mer ofPMMA in amu. C = 12 amu, N = 14 amu, CI = 35.5 amu, H = 1 amu, O = 16 amu, F = 19 amu 2. 12 amu
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This note was uploaded on 01/10/2012 for the course ENSC 3313 taught by Professor Staff during the Fall '11 term at Oklahoma State.

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exam3spr2000 - II ENGSC 3313 Spring 2000 TESTJ ~ Name ~...

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