Chapter 12, Problem 44AP

Interpretation Introduction

Interpretation:

The structures of the alternating copolymers of the given two amino acidsare to be represented.

Concept introduction:

Polymers are molecules of high molecular masses that are made up of repeating monomer unit. Polymers are the backbone of four major chemical industries, viz., plastics, elastomers, fibers, and paints and varnishes.

On the basis of the mode of polymerization, polymers have been classified into two subgroups, which are addition polymers and condensation polymers.

Addition polymers are formed when there is a movement of electrons from multiple bonds into new single bonds between molecules without elimination of small molecule.

Polymers that are formed by elimination of small molecules like ${\text{H}}_2\text{O}$ are condensation polymer.

Copolymers are polymers made from two or more different monomer units

Alternating polymers are copolymers in which subunits are linked in alternate order like $A-B-A-B-A-B$ where AandB are monomer units.