A) condensation polymer
B) polyamide
C) copolymer
D) homopolymer
Correct Answer: D
Solution :
Nylon is not a homopolymer as it is a copolymer. The monomers of nylon 6, 6 are adipic acid and hexamethylene diamine. Nylon contain \[-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-NH-\] (amide) linkage, hence they are structurally polyamide. Also nylon is condensation polymer as molecule of water eleminates in its preparation \[n\,\,HOOC-{{(C{{H}_{2}})}_{4}}-COOH\] \[+\,n\,.\,HNH-{{(C{{H}_{2}})}_{6}}-N{{H}_{2}}\xrightarrow{-n{{H}_{2}}O}\] \[\underset{Nylon\text{ }6,\text{ }6}{\mathop{\left[ -\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-{{(C{{H}_{2}})}_{4}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\mathop{N}}\,-{{(C{{H}_{2}})}_{6}}-NH- \right]}}\,\]
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