Rubber

Rubber is a natural polymer that is derived from the milky white sap of the rubber tree, Hevea brasiliensis. It is an important material used in various applications due to its unique properties, such as flexibility, elasticity, and resistance to water and electricity.

Chemical Composition

The primary component of natural rubber is polyisoprene, which is composed of repeating isoprene units. Each isoprene unit contains four carbon atoms and is the building block of the polymer chain.

Properties of Rubber

Elasticity: Rubber has the ability to return to its original shape after being stretched or deformed.
Flexibility: It can be bent or twisted without breaking.
Insulation: Rubber is a good insulator of electricity and heat.
Water Resistance: It does not easily absorb water, making it suitable for waterproof applications.
Resilience: Rubber can absorb and dissipate energy, making it useful for shock absorption.

Uses of Rubber

Rubber is used in a wide range of products, including:

Tires for vehicles
Footwear
Industrial belts and hoses
Seals and gaskets
Gloves
Medical devices
Electronic components

Study Guide

When studying the topic of rubber, it's important to understand the chemical structure of polyisoprene and how it contributes to the unique properties of rubber. Additionally, consider the various applications of rubber in everyday products and the importance of sustainability in rubber production.

Key concepts to focus on include: