Lactic acid and glycollic acid are the monomers used for preparation of polymer

Options

A. nylon-2-nylon-6
B. dextron
C. PHBV
D. buna-N

Answer

B

Explanation

Dextron is a copolymer of glycollic acid and latic acid consisting of ester linkages that makes it biodegradable.
`underset("Glycolic acid")(noverset(OH)overset(|)(CH_(2))-COOH)+n underset("Lactic acid")(CH_(3)-overset(OH)overset(|)(CH)-COOH)overset(-H_(2)O)to[underset("Dextron")underset()underset()underset()(-O-CH-overset(O)overset(||)(C)-O-CH_(2)-overset(O)overset(||)(C)-O-)]_(n)`
`**` Nylon-2-nylon-6 is copolymer of glycine
`(H_(2)N-CH_(2)-COOH)` and amino caproic acid
`(H_(2)N(CH_(2))_(5)COOH)` and is biodegradable in nature.
`nN_(2)N-underset("Glycine")(CH_(2))-COOH+n underset("Amino caproic acid")(H_(2)N(CH_(2))_(5)COOH)to[underset("Nylon-2-2nylon-6")underset()underset()underset()(-NH-CH_(2)-overset(O)overset(||)(C)-NH(CH_(2))_(5)-overset(O)overset(||)(C)-)]`
`**` PHBV (poly `beta`-hydroxy butyrate -co-`beta`-hydroxy valerate) is obtained by copolymerisation of 3-hydroxybutanoic acid and 3-hydroxy pentanoic acid.
`underset("3-hydroxy butanoic acid")(CH_(3)-overset(OH)overset(|)(CH)-CH_(2)COOH)+underset("3-hydroxy pentanoic acid")(CH_(3)CH_(2)-overset(OH)overset(|)(CH)-CH_(2)COOH)to[underset("PHBV")(-O-underset(CH_(3))underset(|)(CH)-CH_(2)-underset(O)underset(||)(C)-O-underset(CH_(3))underset(|)underset(CH_(2))underset(|)(CH)-CH_(2)-underset(O)underset(||)(C)-)]_(n)`
`**` Buna-N is obtained by copolymerisation of 1,3 butadiene and acrylonitrile in the presence of a peroxide catalyst.
`underset("1,3-butadiene")(nCH_(2)=CH-CH)=CH_(2)+underset("Copolymerisation")underset("Acrylonitrile")(nCH_(2)=overset(CN)overset(|)(CH))to[underset("Buna-N")underset()underset()underset()(-CH_(2)-CH=CH-CH_(2)-CH_(2)-overset(CN)overset(|)(CH)-)]_(n)`