Question

Which of the following pairs of monomers is used for the preparation of dextron?

Options

• 3-hydroxy butanoic acid and 3-hydroxy pentanoic acid

• Glycine and ω -amino caproic acid

• Lactic acid and glycolic acid

• lsobutylene and lsoprene

Answer 1

Lactic acid and glycolic acid

Explanation:

Lactic acid and glycolic acid are the monomers utilised in the production of dextron. It has ester linkage and is a copolymer.

\[\begin{array}{cc}
\phantom{.............}\ce{OH}\phantom{................}\ce{OH}\phantom{....................................}\ce{O}\phantom{..................}\ce{O}\phantom{...........}\\
\phantom{.............}|\phantom{..................}|\phantom{......................................}||\phantom{...................}||\phantom{.........}\\
\ce{\text{n}CH3 \underset{\text{Lactic acid}}{- CH -} COOH + \underset{\text{Glycollc acid}}{\text{n}CH2 -}COOH ->[- H2O] [- O - CH - C - O - CH2 - C - O -]_\text{n}}\\
\phantom{.............................}|\\
\phantom{.............................}\ce{CH3}
\end{array}\]