A delustrant is a substance that reduces the
lustre
Lustre or Luster may refer to:
Places
* Luster, Norway, a municipality in Vestlandet, Norway
** Luster (village), a village in the municipality of Luster
* Lustre, Montana, an unincorporated community in the United States
Entertainment
* '' ...
(sheen) of
synthetic fibres
Synthetic fibers or synthetic fibres (in British English; see spelling differences) are fibers made by humans through chemical synthesis, as opposed to natural fibers that are directly derived from living organisms, such as plants (like cotton) ...
.
The most common delustrant is
anatase
Anatase is a metastable mineral form of titanium dioxide (TiO2) with a tetragonal crystal structure. Although colorless or white when pure, anatase in nature is usually a black solid due to impurities. Three other polymorphs (or mineral form ...
titanium dioxide
Titanium dioxide, also known as titanium(IV) oxide or titania , is the inorganic compound with the chemical formula . When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891. It is a white solid that is insolub ...
.
Synthetic fibres such as
nylon
Nylon is a generic designation for a family of synthetic polymers composed of polyamides ( repeating units linked by amide links).The polyamides may be aliphatic or semi-aromatic.
Nylon is a silk-like thermoplastic, generally made from pe ...
are normally extremely shiny and transparent when extruded. Adding powdered titanium dioxide causes the surface of the fibres to be rougher, reducing the sheen; at the same time, being opaque, it reduces the transparency of the fibre. To be effective as a delustrant, titanium dioxide must be powdered 0.1-1.0 µm, depending on the size of the fibre, and varying amounts (up to about 2%) can be used depending on the level of lustre required.
Some of the words used to describe different lustre levels are: clear, bright, semi-dull, semi-matt, dull, matt, extra dull, and super dull.
See also
*
Luster (textiles)
In textiles, lustre or luster is a physical property that makes them appear bright, glossy, and shiny. The amount of light reflected from the surface of a fiber is referred to as its luster.The level of luster is determined by how light reflects ...
*
Hand feel
Hand feel (Hand, Fabric hand, Fabric feel) is the property of fabrics related to the touch that expresses sensory comfort. It refers to the way fabrics feel against the skin or in the hand and conveys information about the cloth's softness and s ...
Citations
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References
Dictionary.com definition of Delustranttextile.web.id definition of Delustrant
Textiles