User: Is whiter always better for titanium dioxide?
SEED: No.
User: Then how do I improve the hiding power of titanium dioxide?
SEED: Ultimately, the hiding power of titanium dioxide is about light scattering. To find titanium dioxide with high hiding power, consider the following:
1: High titanium oxide content ensures a relatively complete crystal structure.
2: Rutile has a refractive index of 2.71, while anatase has 2.55, a difference of about 20%. The rutile refractive index should be as high as possible.
3: Narrow particle size distribution is crucial. A wide particle size distribution will fill the space between smaller particles, reducing the overall refractive index.
4: Choose products coated with organic materials such as alumina, silicon dioxide, or siloxanes. This helps to disperse the product and create a porous structure. It enhances light scattering and improves the product’s opacity.
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