Question

Identify the monomers used in preparation of PHBV polymer.

Options

• 3-Hydroxybutanoic acid and 3-hydroxypentanoic acid

• Lactic acid and glycolic acid

• Styrene and glycolic acid

• Glycine and ω amino caproic acid

Answer 1

3-Hydroxybutanoic acid and 3-hydroxypentanoic acid

Explanation:

\[\begin{array}{cc}
\phantom{..}\ce{OH}\phantom{.............................}\ce{OH}\phantom{.......................................................}\\
\phantom{.}|\phantom{................................}|\phantom{........................................................}\\
\ce{\underset{3-Hydroxybutanoic acid}{CH3-CH-CH2-COOH} + \underset{3-Hydroxypentanoic acid}{CH3-CH2-CH-CH2-COOH} -> [-O-CH-CH2-C-O-CH-CH2-C -]_{{n}}}\\
\phantom{......................................................................}|\phantom{...........}||\phantom{.......}|\phantom{.........}||\phantom{........}\\
\phantom{....................................................................}\ce{CH3}\phantom{........}\ce{O}\phantom{......}\ce{CH2CH3}\phantom{..}\ce{O}\phantom{......}\\
\phantom{................................................................}\ce{PHBV}
\end{array}\]