Chapter 24, Problem 17STP

To determine

To state: Three groups of polymers and their uses.

Explanation of Solution

Introduction: Polymers are large molecules having high molecular mass, formed by joining of repeating structural units called monomers.

Three groups of polymers are:

1. Natural polymers

These polymers occur naturally and are found in plants and animals. For example: proteins, cellulose, starch and rubber.

Uses: cellulose is used to make paper; resins are used in the production of adhesives; rubber is used for adhesives and insulation.

2. Plastics

Plastics are synthetic polymers extensively used in daily life as they are lightweight, moldable, inexpensive and strong.

Uses: plastic is used in making plastic bottles, tubes, plastic films, among its innumerable uses.

3. Synthetic fibers:

These are also synthetic polymers. For example nylon, polyester, and acrylic.

Uses: nylon is used making ropes, carpets, fabrics; polyester is used in making films, clothing material and ropes.

Conclusion: The polymers form the backbone of major industries such as plastics, paints, fibers and elastomers.