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spandex chemical formula

Dottie West is probably the best-known out of any Country singer for wearing spandex outfits on stage. You should know the structure of urea. ; Milan, Italy; and Geneva, Switzerland, the Federal Bureau of Investigation and Swiss police finally staged a sting to exchange a bogus check for the documents. Spandex is produced as monofilament or fused multifilament yarns in a variety of deniers. Kirkwood says consumers can soon expect to see more Lycra spandex incorporated into natural and man-made leather shoes for greater comfort. urethane functional group(s). Although somewhat weak in the relaxed state, spandex fibres can be stretched about 500–610 percent beyond their original length without breaking and quickly return to their original length. The two compounds are mixed together in a reaction vessel to produce a prepolymer. Items made of spandex can be machine washed and dried at moderate temperatures. After removal of the tensile load it will immediately return to its original length. 20 denier spandex, for example, is used in ligthweight support hoisery, in which a large amount of stretch is necessary for the products use and durability. It melts at about 250° C (480° F) and yellows upon prolonged exposure to heat or light. In textiles the synthetic fibre known generically as spandex is composed of at least 85 percent polyurethane by weight. Such is Lycra's prominence it has become a genericised trademark in many parts of the world, used to describe any kind of spandex. dark blue crystalline powder. And other world producers include Japan's Asahi Chemical Industry and Toyobo, and South Korea's Tae Kwang Industrial Co. The Chemistry of Spandex. As pop singer Madonna started a trend in the '80s to wear innerwear as outerwear and sports-looks translated into new street-wear fashions, Chanel couture skirts set fashion trends with the use of spandex in leggings. In the U.S., those other producers include Fall River, Mass.-based Globe Manufacturing, maker of Glospan and Cleerspan spandex, and Bayer Corp. --the U.S. affiliate of Germany's Bayer--maker of Dorlasten brand spandex. This article was most recently revised and updated by Amy Tikkanen, Corrections Manager. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. By the 1980s, Kirkwood says, spandex had a commanding presence in hosiery, and the fiber enlarged its presence among champion and amateur athletes who donned spandex garments to improve their performance if not their appearance. And unlike rubber thread, spandex does not break down with exposure to body oils, perspiration, lotions, or detergents. [1] When force is applied, the folded flexible segments straighten out and then return to their original position when the force is removed. Corrections? 1,4-Benzenedicarboxylic acid, polymer with 1,4-benzenediamine For each of the atoms in the abbreviated Spandex structure, state its Such fibres are generally used for their highly elastic properties. …system, reportedly based on light-sensitive polyurethane resins, was introduced in 1968.…, >polyurethane, is molded into parts such as automobile bumpers and inside panels through a process known as reaction injection molding, or RIM. Spandex is the largest end use for PTMG, accounting for more than 70% of global demand annually. Draw in the missing hydrogens and non-bonded electrons in the abbreviated Ladies' foundation garments are still the foundation of the spandex business, reports Robert L. Kirkwood, DuPont Lycra end use research manager. Once the prepolymer is formed it is reacted further in various ways and drawn out to produce a long fiber. This process prevents the fibers sticking together and aid in textile manufacture. Wo finden Sie Ihre Kundenummer? © 1997-2020 LUMITOS AG, All rights reserved, https://www.chemeurope.com/en/encyclopedia/Spandex.html, Your browser is not current. Does Jerry Seinfeld have Parkinson's disease? Hyosung PTMG technology is one of chemical technology developed and owned by Hyosung Corporation. A typical ratio of glycol to diisocyanate is 1:2. Benutzerrollen und ihre Funktionen A urethane is a Industry sources peg DuPont's annual sales of Lycra at more than $1.5 billion. Wenn Sie keine Rechnung zur Hand haben, rufen Sie uns unter 044 818 86 11 an. Spun from a block copolymer, these fibers exploit the high crystallinity and hardness of polyurethane segments, yet remain "rubbery" due to alternating segments of polyethylene glycol. The solution dry spinning method is used to produce over 90% of the world's spandex fibers. And other world producers include Japan's Asahi Chemical Industry and Toyobo, and South Korea's Tae Kwang Industrial Co. Functional Groups: With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter. The repeating structural unit of most simple polymers not only reflects the monomer(s) from which the polymers are constructed, but also provides a concise means for drawing structures to represent these macromolecules. The solvent helps make the solution thinner and more easily handled and then can be pumped into the fiber production cell. Spandex is used in such apparel as foundation garments, support hosiery, and swimsuits. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE. Indeed, fashion has played a hand in the wider use of spandex. Each fiber of spandex is made up of many smaller individual fibers that adhere to one another due to the natural stickiness of their surface. Coarser yarns, with a denier of 1500 to 2240 denier, have less stretch capacity and can be used for support hosiery tops, swimwear, and foundation garments.[1]. He is also a contributor of Wikipedia. "Spandex" is a generic name and not derived from the chemical name of the fiber, which most manufactured fibers are, but derived by shifting around the syllables in the word expands. Pagkakaiba ng pagsulat ng ulat at sulating pananaliksik? It is stronger and more durable than rubber, its major non-synthetic competitor. composite functional group that is part ester and part amide. Spandex is used in such apparel as foundation garments, support hosiery, and swimsuits. The same assumption of costume composition is also made for latex / rubber garments, which are also solid in color and skin-tight. Chemical & Engineering News values of x and n. Expanded Structure: When first introduced it revolutionized many areas of the clothing industry. This reaction is know as chain extension reaction. Physical Properties of Spandex Fiber: 1. Bayer introduced its spandex fiber in the early 1960s in Germany, but only started producing spandex in the U.S. at its Bushy Park, S.C., site in the mid-1990s. The Chemistry of Steak. Let us know if you have suggestions to improve this article (requires login). However, early superhero comics predate the invention of spandex (Superman-1938, Batman-1939, Captain America-1941). What is the time signature of the song Atin Cu Pung Singsing? Spandex ist Ihr führender Lieferant von Selbstklebefolien, Digitaldruckmaterialien, Schildersystemen sowie Hard- und Software für Werbetechniker, Siebdrucker, Schilderhersteller und Messebauer. Printing processes for early comics only rendered images with distinctly separate solid blocks of color well. It is used more often in women's as their clothes are usually more form-fitting. Read what you need to know about our industry portal chemeurope.com. Spandex was invented in 1959 by Joseph Shivers, a chemist working for the chemical giant Du Pont. Because spandex is skintight, as many superhero costumes appear to be drawn, and because spandex is almost exclusively made in the same bright solid colors as the early Golden Age comics, the after-the-fact assumption of spandex composition was made. This causes the solution to be aligned in strands of liquid polymer. Spandex fibres are frequently covered with other fibres such as nylon. Spandex contains some composite functional groups not mentioned in the These fibers are superior to rubber because they are stronger, lighter, and more versatile. density- 1.199g/cm^3. Hexanediol/neopentyl glycol/adipic acid/pyromellitic dianhydride copolymer | C27H38O14 | CID 86278318 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Multifilaments are partly fused together at intervals and are found in fibers with deniers of 40 and above. Notice that because Spandex is a polymer, its macromolecular structure Dependence of Physical Properties on Structure: The Chemistry of Stars. Your browser does not support JavaScript. In fact, spandex fibers can be stretched to almost 500% of their length. Even though DuPont's spandex girdles the lion's share of world spandex capacity of about 200 million lb annually, other fiber makers have reached out for a piece of the action. Step 2: The prepolymer is further reacted with an equal amount of diamine. Soft and rubbery segments of polyester or polyether polyols allow the fiber to stretch up to 600% and then recover to its original shape. n next to the parentheses in the structure. It already has found its way into the auto market where spandex allows door panel fabrics to stretch and adhere tightly to the door.

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