Polyethylene Microspheres
Encyclopedia
Polyethylene microspheres are a group of polymer microspheres, sometimes also referred to as polyethylene spheres, polyethylene beads, polyethylene balls and polyethylene microparticles
Microparticles
Microparticles are particles between 0.1 and 100 \mum in size. Commercially available microparticles are available a wide variety of materials, including those made of ceramics, glass, polymers, and metals. One encounters microparticles everyday in nature with items such as pollen, sand, and dust...

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They are commercially available in particle sizes from 10 um to 1000 um (1mm). Low melting temperature
Melting temperature
Melting temperature may refer to:* Melting point, the temperature at which a substance changes from solid to liquid state.* DNA melting temperature, the temperature at which a DNA double helix dissociates into single strands....

 and fast phase transition
Phase transition
A phase transition is the transformation of a thermodynamic system from one phase or state of matter to another.A phase of a thermodynamic system and the states of matter have uniform physical properties....

s make this material especially suitable for creating porous structures in ceramics and other materials. Polyethylene microspheres are widely used in cosmetics, skin care and personal care industries, as well as biomedical and health science research, microscopy techniques, fluid visualization and fluid flow analysis, and process troubleshooting.

Polyethylene microspheres are widely used in cosmetics industry as gentle and effective exfoliating agents. Sphericity and particle size uniformity create ball-bearing effect in creams and lotions, resulting in a silky texture and spreadability. Exceptional smoothness and roundness also provides lubrication during application. Micropsheres in different colors add visual appeal to cosmetic products. In addition, microspheres minimize the appearance of fine lines and wrinkles by both filling them and scattering light.

Fluorescent polyethylene microspheres are commonly used to run blind tests on laboratory and industrial processes, in order to develop proper methods and minimize cross-contamination of equipment and materials. Microspheres that appear to be invisible in the daylight can be illuminated to display a bright fluorescent response under UV light.

Colored polyethylene microspheres are used for fluid flow visualization
Flow visualization
Flow visualization in fluid dynamics is used to make the flow patterns visible, in order to get a qualitative or quantitative information on them.- Overview :...

to enable observation and characterization of flow of particles in a device. Colored microspheres can also be used as an accent color or as a visible marker in microscopy and biotechnology.

Black polyethylene microspheres can have magnetic or conductive functionality, and have uses in electronic devices, EMI shielding and microscopy techniques.

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