Chapter 23, Problem 117SCQ

(a)

Interpretation Introduction

Interpretation:

The important properties which the cross-linking in polyethylene impart to a polymer has to be explained

Concept introduction:

Polymers:

Monomers combine together to form polymers. Monomers are the repeating units of small molecules which link together to form polymers and the process is called as polymerization.

Cross-linking: In polymer chemistry, cross-linking indicates the bond which links a polymer to another polymer chain and is used to change many physical properties of a polymer.

(b)

Interpretation Introduction

Interpretation:

The important properties which the $OH$ groups in polyvinyl alcohol impart to a polymer has to be explained

Concept introduction:

Polymers:

Monomers combine together to form polymers. Monomers are the repeating units of small molecules which link together to form polymers and the process is called as polymerization.

(c)

Interpretation Introduction

Interpretation:

The important properties which hydrogen bonding in a polyamide impart to a polymer has to be explained

Concept introduction:

Polymers:

Monomers combine together to form polymers. Monomers are the repeating units of small molecules which link together to form polymers and the process is called as polymerization.

Hydrogen bonding is a type of dipole-dipole interaction of molecules when the hydrogen is bonded to strong electronegative atom in the molecules.

The hydrogen bonding takes place within a molecule is called as intramolecular hydrogen bonding.