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Chapter 22: Problem 8

Vinyl chloride, \(\mathrm{H}_{2} \mathrm{C}=\mathrm{CHCl}\), undergoes copolymerization with 1,1 -dichloroethylene, \(\mathrm{H}_{2} \mathrm{C}=\mathrm{CCl}_{2},\) to form a polymer commercially known as Saran. Draw the structure of the polymer, showing the repeating monomer units.

Short Answer

Expert verified
The drawn structure of Saran, a copolymer formed from vinyl chloride and 1,1-dichloroethylene monomers, is represented by the repeating unit \(-CH2 - CHCl - CH2 - CCl_{2} -\).

Step by step solution

01

Monomer Identification

The monomers are identified as vinyl chloride (\(H_{2}C=CHCl\)) and 1,1-dichloroethylene (\(H_{2}C=CCl_{2}\)).
02

Monomer Structure

Observing their formulas, vinyl chloride has a double bond between the two carbon atoms and has one hydrogen and one chlorine attached to the second carbon. The structure for 1,1-dichloroethylene has a double bond between the two carbon atoms but two chlorine atoms attached to the second carbon atom.
03

Copolymerization

During polymerization, the double bonds in the monomers break to form single bonds with other monomers, creating a repeating chain of monomers. Thus we can draw a repeating unit as: \(-CH2 - CHCl - CH2 - CCl_{2} -\) which represents the polymer known commercially as Saran.

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