Question

Nylon is named according to the number of C atoms between the N atoms in the chain. Nylon-46 has 4 C atoms then 6 C atoms and this pattern repeats. Nylon-6 always has 6 atoms in a row. Speculate as to why nylon-46 is stronger than nylon-6.

(Hint:Consider the strengths of interchain forces.)

Short answer

Nylon-46 is stronger than nylon-6 due to the strengths of its interchain forces. It is generally known that nylon has hydrogen bonding interactions due to its N-H bonds.

Step-by-step solution

Nylon- 46 is stronger than nylon-6

Nylon- 46 is stronger than nylon-6 due to the strengths of its interchain forces. It is generally known that nylon has hydrogen bonding interactions due to its N-H bonds.

However, observe the two structures shown below, observe that Nylon-46 has comparatively more N-H bonds than Nylon 6 which makes it a stronger polymer. Although both structures have hydrogen bonding, the presence of increased hydrogen bonding in Nylon-46 makes it stronger.

Illustration of Nylon- 46 and nylon-6

Illustration of Nylon- 46 and nylon-6

Therefore, Nylon- 46 is stronger than nylon-6 due to the strengths of its interchain forces. It is generally known that nylon has hydrogen bonding interactions due to its N-H bonds.