Plasticizer

A Plasticizer is a substance that is added to a material to make it softer and more flexible, to increase its plasticity, to decrease its viscosity, or to decrease friction during its handling in manufacture. Plasticizers are commonly added to polymers such as plastics and rubber, either to facilitate the handling of the raw material during fabrication, or to meet the demands of the end product's application.

History

The use of plasticizers dates back to mid-19th century when castor oil was used to soften rubber. The modern understanding of plasticizers was developed in the early 20th century with the discovery of phthalates.

Types of Plasticizers

There are different types of plasticizers, the most common of which are phthalates, adipates, and trimellitates. Other types include polymeric and monomeric plasticizers.

Phthalates

Phthalates are the most commonly used plasticizers. They are colorless, odorless liquids that do not evaporate easily. They are used in a wide variety of products, from vinyl flooring to adhesives, detergents, lubricating oils, automotive plastics, and personal-care products.

Adipates

Adipates are used to provide flexibility and durability to many products, including food packaging, children's toys, and medical devices.

Trimellitates

Trimellitates are used in automobile interiors and other applications where resistance to high temperature is required.

Health and Environmental Concerns

There are health and environmental concerns associated with the use of plasticizers, particularly phthalates. These concerns have led to the development of alternative plasticizers, such as citrate esters, which are being used in place of phthalates in some applications.

See Also

• Polymer
• Phthalate
• Adipate
• Trimellitate
• Citrate ester

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