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Wool is "the fiber from the fleece of the sheep or lamb or hair of the Angora or Cashmere goat (and may include the so-called specialty fibers from the hair of the camel, alpaca, llama, and vicuna) which has never been reclaimed from any woven or felted wool product". [16] "Virgin wool" and "new wool" are also used to refer to such never used ...
Breathability: In general, wool's comfort comes from its thermo-balance characteristics. The breathability factor of a material depends on its ability to absorb moisture relative to its weight and then release it into the air. The higher the absorption value the better the textile is at adapting to humidity level changes.
When added to foods or other materials for the express purpose of maintaining moisture content, hygroscopic materials are known as humectants. Materials and compounds exhibit different hygroscopic properties, and this difference can lead to detrimental effects, such as stress concentration in composite materials .
Wool is a highly effective insulating material which performs better than its rated R value because it can absorb and release moisture. [3] Mongolian nomads used [when?] felted and woven sheep wool pads as an insulating layer on the walls and floors of their dwellings, called ger or yurts. The use of wool for insulation is starting to rise in ...
An increase in a w is usually accompanied by an increase in water content, but in a non-linear fashion. This relationship between water activity and moisture content at a given temperature is called the moisture sorption isotherm. These curves are determined experimentally and constitute the fingerprint of a food system. [2]
Don Magruder writes: "The advent of stone wool insulation is providing a unique value proposition for contractors and homeowners."
When used as a food additive, a humectant has the effect of keeping moisture in the food. [1] Humectants are sometimes used as a component of antistatic coatings for plastics . A humectant attracts and retains the moisture in the air nearby via absorption, drawing the water vapor into or beneath the organism's or object's surface.
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