Likra

Likra (en. Lycra), elastan ya da Spandex, elastik ve güçlü bir tür sentetik liftir. Polieter-Poliüre bağlarından oluşmuştur. 1958 yılında DuPont'un Waynesboro, Virginia'daki Benger Laboratuvarı'nda çalışan kimyager Joseph Shivers tarafından icat edilmiştir.^[1]^[2]^[3]^[4]^[5]

"Spandex" ismi İngilizcede genişler anlamına gelen "expands" kelimesinin anagramıdır.^[6] Spandex ismi Kuzey Amerika'da çokça kullanılırken Avrupa ülkelerinde Elastan kelimesinin varyasyonları kullanılır. Lycra (likra) DuPont tarafından konulan ticari isimdir.

^ ABD patent 3.023.192, "Segmented copolyetherester elastomers" filed May 29, 1958, issued Feb 27, 1962
^ Flynn, Elizabeth and Patel, Sarah (2016) The Really Useful Primary Design and Technology Book: Subject Knowledge and Lesson Ideas New York: Routledge. p.86. 9781317402565
^ Teegarden, David M. (2004) Polymer Chemistry: Introduction to an Indispensable Science NSTA Press. p.149. 9780873552219
^ Editors of Time-Life (2016) TIME-LIFE American Inventions: Big Ideas That Changed Modern Life Time-Life Books. 9781683306313
^ Moskowitz, Sanford L. (2016) Advanced Materials Innovation: Managing Global Technology in the 21st Century Wiley. 9780470508923
^ Kadolph, Sara J. (2010) Textiles. Pearson. 9780135007594

[1] ABD patent 3.023.192, "Segmented copolyetherester elastomers" filed May 29, 1958, issued Feb 27, 1962

[2] Flynn, Elizabeth and Patel, Sarah (2016) The Really Useful Primary Design and Technology Book: Subject Knowledge and Lesson Ideas New York: Routledge. p.86. 9781317402565

[3] Teegarden, David M. (2004) Polymer Chemistry: Introduction to an Indispensable Science NSTA Press. p.149. 9780873552219

[4] Editors of Time-Life (2016) TIME-LIFE American Inventions: Big Ideas That Changed Modern Life Time-Life Books. 9781683306313

[5] Moskowitz, Sanford L. (2016) Advanced Materials Innovation: Managing Global Technology in the 21st Century Wiley. 9780470508923

[6] Kadolph, Sara J. (2010) Textiles. Pearson. 9780135007594

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