Question

The most important type of forces present in Nylon – 6,6 is:
A. van der Waals forces of attraction
B. hydrogen bonding
C. three dimensional network of bonds
D. metallic bonding

Answer 1

We have to understand about the relative strength of the forces , (van der Waals forces of attraction , hydrogen bonding , three dimensional network of bonds and metallic bonding) in nylons.

Complete step by step answer:
Nylon comes from a family of synthetic polymers referred to as polyamide . The properties which make Polyamides suitable for plastic applications are resistance to toughness ,Nylon-6,6 is formed from two monomers each of which contain 6 carbon atoms - hence its name. one among the monomers may be a 6 carbon acid with a -COOH group at each end - adipic acid . The opposite monomer may be a 6 carbon chain with an amino , $- N{H_2}$ , at each end. This is 1,6-diaminohexane (also referred to as hexane-1,6-diamine).
When these two compounds polymerise, the amine and acid groups combine, whenever with the loss of a molecule of water. This is often referred to as condensation polymerization..
Nylon-6,6 contains hydrogen bonding interactions due to the presence of amide linkages.The long molecular chains in the structure of Nylons results in making more hydrogen bonds which hold the molecule and provide strength to it.
The other forces present in nylon like van der Waals is a weak force so are three dimensional networks of bonds and metallic bonding.
So, the correct answer is “Option B”.

Note: The Hydrogen bond in a polymer mixture (Nylon etc) is a stimulating and important subject of research as its presence usually enhances the miscibility of the mixture. Here, the factors affecting the formation and stability of hydrogen bonds, the consequences of hydrogen bonds on the miscibility and therefore the properties of blends, and methods to include inter-associated hydrogen bonds .