Nylon-6,6 has a noticeably higher melting point than polyethylene of similar molar mass
CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding
Problem
Nylon-6,6 has a noticeably higher melting point than polyethylene of similar molar mass. Which of the following best explains this difference?
(a) Polyethylene is more polar than nylon, so its chains separate more easily when heated
(b) Nylon chains are highly branched, enabling tighter packing and a higher melting point
(c) Nylon chains form extensive hydrogen bonds between amide groups, increasing cohesive forces
(d) Nylon’s oxygen atoms make the molecules heavier, so stronger London dispersion forces raise its melting point