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Question: Which of the following statements are correct? A) Nylon\( - 2 - \)nylon \({\text{6}}\) is a poly-a...

Which of the following statements are correct?
A) Nylon−2−- 2 -nylon 6{\text{6}} is a poly-amide copolymer of alanine
B) 3 - {\text{3 - }}Hydroxy pentanoic acid is a monomer of Nylon 2 - {\text{2 - }}nylon 6{\text{6}}
C) PHBV can never be used in the manufacture of orthopedic devices
D) None of these

Explanation

Solution

A copolymer is a polymer that is derived from more than one species of monomer molecules. The polymerization of monomers into copolymers is called copolymerization. Copolymers obtained by copolymerization of two monomer species are sometimes called biopolymers.

Complete step by step answer:

  1. First of all let us analyze the first option where the monomers of Nylon −2−- 2 -nylon 6{\text{6}} are glycine and amino adipic acid. It doesn’t have a copolymer of alanine. Hence, the statement Nylon−2−- 2 -nylon 6{\text{6}} is a polyamide copolymer of alanine is incorrect.
  2. In the second option the monomers of Nylon −2−- 2 -nylon 6{\text{6}} are glycine and amino adipic acid and it doesn’t have a monomer named 3 - {\text{3 - }} Hydroxy pentanoic acid. Hence, the statement 3 - {\text{3 - }} Hydroxy pentanoic acid is a monomer of Nylon 2 - {\text{2 - }}nylon 6{\text{6}} is incorrect.
  3. In the third statement the PHBV is used as a chemical in the devices for orthopedics. Hence, the given statement which is PHBV Can never be used in the manufacture of orthopedic devices is incorrect.
  4. As all the given options are incorrect then we can say that option D is a correct choice which shows none of these.

Hence the correct option is D.

Note:
Nylon−2−- 2 -nylon 6{\text{6}} is a polyamide polymer which is formed by copolymerization of glycine (H2N−CH2−COOH)({H_2}N - C{H_2} - COOH) and aminocaproic acid (H2N−(CH2)5−COOH)({H_2}N - {\left( {C{H_2}} \right)_5} - COOH). The polymer Nylon−2−- 2 -nylon 6{\text{6}} is an example of a biodegradable polymer which means it breaks down by bacterial decomposition to yield natural byproducts. Hence, the polymer Nylon−2−- 2 -nylon 6{\text{6}} doesn’t harm the environment and is widely used in human daily life. The PHBV is used as a chemical for controlling the release of drugs, packaging, medical implants, devices for orthopedics, and manufacturing bottles.