How would you go about making an A-B-A triblock copolymer consisting of dimethyl siloxane and isoprene such that all of the following criteria were fulfilled:
a) High cis-1,4 addition of the isoprene monomer
b) The isoprene unit is the A block
c) The A block consisted of 50 monomer units and the B block consisted of 200 monomer units
d) The chain ends are capped with carboxylic acid moieties
e) The final polymer chain concentration is 0.1 M
Use any initiating system you require to obtain this polymer. However, you’re answer should include a full mechanism for the system, complete with conditions, AND concentrations for the main steps.
The question belongs to Chemical Engineering and the question is about Ionic Polymerization. The question discusses about A-B-A triblock copolymer consisting of dimethyl siloxane and isoprene. The solution discusses about high cis-1,4 addition of isoprene monomer, A block and B block of monomer units, etc.
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