Polymeric Blooming Agent

 Blooming is the exudation after processing causing a haze, film, or powder on the surface of the polymer. The blooming of additives may be desirable or undesirable. As migration of antioxidants to the polymer surface may help it resist degradation. On the other hand, blooming is often a high concern when it comes to food packing containers and biomedical devices.

However, the innate properties of polymers make them extremely useful for many applications. And to enhance some properties we use blooming agents or additives.




Below is a list of some common polymeric blooming agent that help plastic to mold into a daily use item.

Plasticizers

Lubricants and mold release agents

Scratch and mar additives

Antistats

Compatibilizers

Impact modifiers

Reinforcing fillers; coupling agents

Pigments

Blowing agents

Antioxidants/stabilizers

Some of these are used to reduce static on the surface, help foams expand to a prescribed firmness (blowing agents). While some are here to make sure plastic won't stick to molds. Rest are to increase the physical appearance to make sure there is no oxidation from degrading the material, and the plastic doesn't lose its shape.


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