Valonkeruupigmentteinä

Valonkeruupigmentteinä, a Finnish term, translates to "light-scattering pigments" in English. These pigments are crucial in various applications where opacity, brightness, and whiteness are desired. Unlike dyes that absorb specific wavelengths of light, light-scattering pigments work by reflecting and refracting light from their surfaces. This diffuse reflection is what creates the opaque and bright appearance.

The effectiveness of a light-scattering pigment is largely determined by its refractive index and particle size. Pigments with a high refractive index, meaning they bend light more significantly, are generally more efficient at scattering. Similarly, pigments with a particle size close to the wavelength of visible light are particularly effective at scattering. This interaction with light causes the material to appear white and opaque, hiding the color of the substrate beneath.

Titanium dioxide is a prime example of a widely used light-scattering pigment due to its exceptionally high refractive index and excellent scattering properties. Other materials can also function as light-scattering pigments, depending on the specific requirements of the application. These pigments find extensive use in paints, coatings, plastics, paper, and inks, contributing to their visual appeal and functional properties by providing coverage and brightness. Their ability to scatter light is fundamental to achieving desired aesthetic and performance characteristics in a multitude of manufactured goods.