Синтетическое волокно
Синтетические волокна или синтетические волокна (в британском английском ; см. Различия орфографии ) представляют собой волокна, изготовленные людьми с помощью химического синтеза , в отличие от естественных волокон , которые непосредственно получены из живых организмов, таких как растения (такие как хлопок) или мех животных. являются результатом обширных исследований Ученые для воспроизведения естественных животных и волокон растений . В целом, синтетические волокна создаются путем вытягивания волоконнообразующих материалов через спиннеры , образуя клетчатку. Они называются синтетическими или искусственными волокнами. Слово полимер происходит от греческого префикса «поли», что означает «много» и суффикс «mer», что означает «отдельные единицы». (Примечание: каждая единица полимера называется мономером).
Первые синтетические волокна
[ редактировать ]Нейлон был первым коммерчески успешным синтетическим термопластичным полимером. DuPont начал свой исследовательский проект в 1927 году. Первый нейлон, Nylon 66 был синтезирован 28 февраля 1935 года Уоллесом Хьюмом Каротерсом на исследовательском центре Dupont на экспериментальной станции DuPont.
The next step was taken by Hilaire de Chardonnet, a French engineer and industrialist, who invented the first artificial silk, which he called "Chardonnet silk". In the late 1870s, Chardonnet was working with Louis Pasteur on a remedy to the epidemic that was destroying French silkworms. Failure to clean up a spill in the darkroom resulted in Chardonnet's discovery of nitrocellulose as a potential replacement for real silk. Realizing the value of such a discovery, Chardonnet began to develop his new product,[1] which he displayed at the Paris Exhibition of 1889.[2] Материал Chardonnet был чрезвычайно легковоспламеняющимся и впоследствии заменен другими, более стабильными материалами.
Commercial products
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The first successful process was developed in 1894 by English chemist Charles Frederick Cross, and his collaborators Edward John Bevan and Clayton Beadle. They named the fiber "viscose", because the reaction product of carbon disulfide and cellulose in basic conditions gave a highly viscous solution of xanthate.[3] The first commercial viscose rayon was produced by the UK company Courtaulds in 1905. The name "rayon" was adopted in 1924, with "viscose" being used for the viscous organic liquid used to make both rayon and cellophane. A similar product known as cellulose acetate was discovered in 1865. Rayon and acetate are both artificial fibers, but not truly synthetic, being made from wood.[4]
Nylon, the first synthetic fiber in the "fully synthetic" sense of that term,[citation needed] was developed by Wallace Carothers, an American researcher at the chemical firm DuPont in the 1930s. It soon made its debut in the United States as a replacement for silk, just in time for the introduction of rationing during World War II. Its novel use as a material for women's stockings overshadowed more practical uses, such as a replacement for the silk in parachutes and other military uses like ropes.
The first polyester fiber was patented in Britain in 1928 by the International General Electric company.[5] It was also produced by British chemists working at the Calico Printers' Association, John Rex Whinfield and James Tennant Dickson,[6][7] in 1941. They produced and patented one of the first polyester fibers which they named Terylene, also known as Dacron, equal to or surpassing nylon in toughness and resilience.[8] ICI and DuPont went on to produce their own versions of the fiber.
The world production of synthetic fibers was 55.2 million tonnes in 2014.[9]
Descriptions
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About half of all fibres are synthetic, with applications in every field of fiber and textile technology. Although many classes of fibers based on synthetic polymers have been evaluated as potentially valuable commercial products, four of them - nylon, polyester, acrylic and polyolefin - dominate the market. These four account for approximately 98 percent by volume of synthetic fiber production, with polyester alone accounting for around 60 percent.[10]
Synthetic fibers are a source of microplastic pollution from laundry machines.[11]
Common synthetic fibers
[edit]Common synthetic fibers include:
- Nylon (1931)
- Modacrylic (1949)
- Olefin (1949)
- Acrylic (1950)
- Polyester (1953)
Specialty synthetic fibers include:
- Rayon (1894) artificial silk
- Vinyon (1939)
- Saran (1941)
- Spandex (1959)
- Vinalon (1939)
- Aramids (1961) - known as Nomex, Kevlar and Twaron
- Modal (1960s)
- Dyneema/Spectra (1979)
- PBI (Polybenzimidazole fiber) (1983)
- Sulfar (1983)
- Lyocell (1992) (artificial, not synthetic)
- PLA (2002)
- M-5 (PIPD fiber)
- Orlon
- Zylon (PBO fiber)
- Vectran (TLCP fiber) made from Vectra LCP polymer
- Derclon used in manufacture of rugs
Other synthetic materials used in fibers include:
- Acrylonitrile rubber (1930)
Modern fibers that are made from older artificial materials include:
- Glass fiber (1938) is used for:
- industrial, automotive, and home insulation (glass wool)
- reinforcement of composite materials (glass-reinforced plastic, glass fiber reinforced concrete)
- specialty papers in battery separators and filtration
- Metallic fiber (1946) is used for:
- adding metallic properties to clothing for the purpose of fashion (usually made with composite plastic and metal foils)
- elimination and prevention of static charge build-up
- conducting electricity to transmit information
- conduction of heat[citation needed]
See also
[edit]References
[edit]- ^ Garrett, Alfred (1963). The Flash of Genius. Princeton, New Jersey: D. Van Nostrand Company, Inc. pp. 48–49.
- ^ Inventive Genius. New York: Time-Life Books. 1991. p. 52. ISBN 978-0-8094-7699-2.
- ^ Day, Lance; Ian McNeil (1998). Biographical Dictionary of the History of Technology. Taylor & Francis. p. 113. ISBN 978-0415193993.
- ^ Woodings, Calvin R. "A Brief History of Regenerated Cellulosic fibers". WOODINGS CONSULTING LTD. Archived from the original on 22 April 2012. Retrieved 26 May 2012.
- ^ Loasby, G. (1951). "The Development of the Synthetic Fibres". Journal of the Textile Institute Proceedings. 42 (8): P411–P441. doi:10.1080/19447015108663852.
- ^ World of Chemistry. Thomson Gale. 2005. Archived from the original on 28 October 2009. Retrieved 1 November 2009.
- ^ Allen, P (1967). "Obituary". Chemistry in Britain.
- ^ Frank Greenaway, 'Whinfield, John Rex (1901–1966)', rev. Oxford Dictionary of National Biography, Oxford University Press, 2004 accessed 20 June 2011
- ^ Искусственные волокна продолжают расти архивными 28 апреля 2016 года в The Wayback Machine , Textile World
- ^ JE McIntyre, почетный профессор текстильной промышленности, Университет Лидса, Великобритания (ред.). Синтетические волокна: нейлон, полиэфир, акрил, полиолефин . Woodhead Publishing - серия в текстиле. Тол. 36. Кембридж. Архивировано из оригинала 17 июля 2011 года . Получено 21 апреля 2010 года .
- ^ Katsnelson, Alla (2015). «Новости: микропластики представляют головоломку загрязнения» . Труды Национальной академии наук . 112 (18): 5547–5549. Bibcode : 2015pnas..112.5547k . doi : 10.1073/pnas.1504135112 . PMC 4426466 . PMID 25944930 .
Дальнейшее чтение
[ редактировать ]- Первоначальный источник этой статьи и большая часть статей с синтетическим волокном (скопированное с разрешения) - журнал «Целая земля», № 90, лето 1997. Архивировал 6 января 2009 www.wholeearth.com
