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What is "Cuprammonium Fluidity" - Definition & Explanation

The reciprocal of the dynamic viscosity of a solution of cellulose of prescribed concentration in a cuprammonium solvent of prescribed composition, measure under precisely defined conditions.

NOTE:

These solutions commonly exhibit non-Newtonian flow behaviour. Cuprammonium fluidity does not therefore have absolute physical significance as does the fluidity of a Newtonian liquid, although it has hitherto been expressed in reciprocal poises. It is considered that it should be regarded as an empirical quantity and because of this, the results are given in units of cuprammonium fluidity and are not linked to a specific unit.

Some other terms

Some more terms:

The tendency of a yarn to become fuller-looking when wetted and dried under certain conditions. In practice, the overall yarn diameter increases slightly-resulting in a "halo effect" or softer...
An inorganic fiber which is very strong, but has poor flexibility and poor abrasion resistance. Glass will not burn and will not conduct electricity. It is impervious to insects, mildew, and...
A group of units of products of the same type, structure, colour and finish, class and composition, manufactured under essentially the same conditions and essentially at the same time, and submitted...
Curvature of the warp or weft. NOTE: A fabric is said to be warp-bowed or weft-bowed, according to which set of threads is curved. Weft bow may or may not extend over the full width of the...
Spandex or elastane is a synthetic fiber known for its exceptional elasticity (stretchability). It is stronger and more durable than rubber, its major plant competitor. It was invented in 1959 by...

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