2. The repeat structures of three polymers, labelled (I) through (III) are shown below. For each polymer, write down the chemical structures of the monomers from which the polymer could be prepared. (I) \begin{array}{c} [-O-C-NH-\text{phenyl}-CH_2-\text{phenyl}-NH-C-O-CH_2-CH_2-CH_2-CH_2-]_n \end{array} (II) \begin{array}{c} [-O-C-O-\text{phenyl}-C-O-O-CH_2-CH_2-CH_2-CH_2-CH_2-]_n \end{array} (III) \begin{array}{c} [-C-NH-(CH_2)_7-NH-C-(CH_2)_5-]_n \end{array}
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The repeating unit is the part of the polymer that is repeated over and over again to form the long chain of the polymer. Show more…
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