Luster, origin

The original yams were marketed as silk substitutes for use in apparel, hosiery, lace, home furnishings, ribbons, braids, and in a whole range of fabrics using blends with cotton or wool yams. As the end uses expanded beyond silk replacement, the harsh metallic luster of the yam proved disadvantageous and dull "matt" fibers had to be developed. Oil dulling was invented (11) in 1926, and an improved method using titanium dioxide was developed (12) in 1929. 

Mercerized Cellulose (Mercerized Cotton). Mercerizatlon is a process of treating cotton with 25% Na hydroxide which causes it to shrink and become heavier, stronger, denser, and acquire a milky luster it will not shrink and is more easily dyed. It is more active and easier to nitrate than the original cellulose, but the resulting prod is not very stable... 

Matsunaga, M. and I. Nakai (2000), Study of the origin of the silver luster on gray iron age pottery, Anatolian Archaeol. Stud. 9, 207-211. 

Cannel coal Nonbanded coal in which the liptinite is predominantly sporinite. Fusain coal layers composed of chips and other fragments in which the original form of plant tissue structure is preserved commonly has fibrous texture with a very dull luster friable and resembles charcoal commonly concentrated in bedding layers or lenses that form planes of weakness in coal and thus is often exposed on bedding surfaces of broken coal. 

The name tungsten bronzes originates from their characteristic properties intense color, metallic luster, metallic conductivity or semiconductivity, a range of variable composition, and resistance to attack by non-oxidizing acids. The bronzes Na W03 exhibit colors that change with the occupancy factor x as follows ... 

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