Exploring the Elastic Properties of Rubber

The video explores the properties of rubber, focusing on its elasticity due to its polymer structure, known as elastomers. It explains how entropy, a concept from thermodynamics, contributes to rubber's ability to stretch and return to its original shape. The video also covers various processes like mastication, calendaring, extrusion, and vulcanization that enhance rubber's utility. Charles Goodyear's accidental discovery of vulcanization is highlighted as a pivotal moment in rubber's history.

What type of polymer is rubber classified as?

• Thermoplastic

• Elastomer

• Biopolymer

• Copolymer

What happens to the molecular chains of rubber when it is stretched?

• They align in one direction

• They dissolve

• They break apart

• They become more tangled

Which process involves adding sulfur to rubber to make it more durable?

• Vulcanization

• Extrusion

• Mastication

• Calendaring

Who discovered the process of vulcanization?

• Charles Goodyear

• Thomas Edison

• Alexander Graham Bell

• Nikola Tesla

What is the purpose of the mastication process in rubber treatment?

• To make rubber harder

• To make rubber softer and moldable

• To color the rubber

• To add patterns to the rubber