History of Spandex

History The development of spandex was started during World War II. At this time, chemists took on the contest of developing unreal replacements for no-account. Two primary motivating factors prompted their research. First, the war effort required most of the available rubber for create equipment. Second, the price of rubber was unstable and it fluctuated frequently. Developing an alternative to rubber could solve both of these problems. At first, their goal was to develop a durable elastic strand based on synthetic polymers. In 1940, the first polyurethane elastomers were produced. These polymers produced millable gums, which were an adequate alternative to rubber. near the same time, scientists at Du Pont produced the first nylon polymers. These early nylon polymers were stringent and rigid, so efforts were begun to make them more elastic. When scientists found that other polyurethanes could be make into fine threads, they decided that these materials might be useful in making more stretchable nylons or in making lightweight garments. The first spandex fibers were produced on an experimental train by one of the early pioneers in polymer chemistry, Farbenfabriken Bayer. He ticktack a German patent for his synthesis in 1952.

The last(a) development of the fibers were worked out independently by scientists at Du Pont and the U.S. gum elastic Company. Du Pont used the brand name Lycra and began full scale require in 1962. They ar currently the world leader in the production of spandex fibers. Raw Materials A variety of raw materials are used to produce stretchable spandex fibers. This includes prepolymers which produce the backbone of the fiber, stabilizers which cheer the integrity of the polymer, and colorants. Two types of prepolymers are reacted to produce the spandex fiber polymer back-bone. ane is a flexible macroglycol while the other is a stiff diisocyanate. The macro-glycol can be a polyester, polyether, polycarbonate, polycaprolactone or some... If you want to get a full essay, order it on our website: Orderessay

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