What is the Difference Between Elastomer and Polymer?

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The main difference between an elastomer and a polymer is the unique property of elasticity that elastomers possess. Here are the key differences between the two:

  1. Definition: A polymer is a large molecule built with small units called monomers. An elastomer, on the other hand, is a type of polymer that has the specific characteristic feature of elasticity.
  2. Physical Properties: Polymers have different physical properties depending on their structures, while elastomers have the unique physical property of elasticity.
  3. Morphology: The morphology of polymers may vary from crystalline structures to amorphous structures. Elastomers are amorphous polymers.
  4. Elasticity: Polymers can rupture when a pressure is applied (except for elastomers). Elastomers can withstand high pressures due to their elastic property.
  5. Flexibility: Elastomers are very flexible, while other polymers can be rigid.

Elastomers are used in various applications, such as polyurethanes for the textile industry, polybutadienes for tires or wheels, neoprene for wetsuits and wire insulation, and silicone for medical devices, molding, and lubricants.

Comparative Table: Elastomer vs Polymer

Elastomers and polymers are both types of molecules made of long, repeating chains of smaller, bonding molecules called monomers. However, there are some differences between the two. Here is a table summarizing the differences between elastomers and polymers:

Property Elastomers Polymers
Definition Elastomers are polymers with viscoelasticity, having properties of both viscosity and elasticity. Polymers are macromolecules or large molecules made up of clusters of subunits.
Physical property Elastomers exhibit high elongation, flexibility, and elasticity, allowing them to regain their original shape and size after being deformed. Polymers can have various physical properties depending on their structure and composition.
Applications Elastomers are widely used across various industries, such as natural rubber in the automotive industry, polyurethanes in the textile industry, polybutadienes for wheels or tires, neoprene for wetsuits and industrial belts, and silicone for medical devices, molding, and lubricants. Polymers can be used in a wide range of applications, including plastics, fibers, coatings, and more.

Elastomers are a unique type of polymer with specific properties, such as high elasticity and the ability to return to their original shape after being stretched or deformed. In contrast, polymers are a more general term for long, repeating chains of monomers and can have various physical properties and applications.