Plasticizer
Plasticizer
Plasticizer (pronounced: plas-ti-sizer) 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.
Etymology
The term "plasticizer" comes from the word "plastic," which is derived from the Greek word "plastikos," meaning capable of being shaped or molded. The suffix "-izer" is used to denote an agent that imparts a specified property or quality.
Types of Plasticizers
There are several types of plasticizers, including:
- Phthalates: These are the most commonly used plasticizers and are known for their good balance of cost, performance, and environmental factors.
- Adipates: These are typically used in PVC applications where resistance to degradation and loss of flexibility in low temperatures are important.
- Trimellitates: These are used for high-temperature applications due to their ability to retain flexibility at higher temperatures.
- Polymeric plasticizers: These are high molecular weight compounds that are used when a high degree of permanence is required.
Uses of Plasticizers
Plasticizers are used in a wide variety of applications, including:
- PVC: Plasticizers are used to soften PVC, making it more flexible and easier to process.
- Rubber: Plasticizers are used to increase the elasticity of rubber.
- Adhesives: Plasticizers are used to improve the flexibility and workability of adhesives.
- Paints and Coatings: Plasticizers are used to improve the flow and gloss of paints and coatings.
Health and Environmental Concerns
Some types of plasticizers, particularly phthalates, have been associated with potential health and environmental concerns. As a result, there has been a move towards the use of alternative plasticizers that are considered to be more environmentally friendly.
External links
- Medical encyclopedia article on Plasticizer
- Wikipedia's article - Plasticizer
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