ENGSC 3313, Spring 2000
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
" -" ,
two reactIon types. Cham additIon IS.
, : ."
characterized by a free radical initiation,
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.
The figure below shows a mer of polymethyl
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
C = 12 amu, N = 14 amu, CI = 35.5 amu, H = 1 amu, O = 16 amu, F = 19 amu