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Natural rubber [(CH2CHCCH3CH2)] occurs in a large variety of plants. It is amorphous when unstretched, while a crystalline structure appears on stretching or at low temperature. At room temperature it has a specific gravity of 0.93, although this value can vary slightly depending on any impurities present. Natural rubber is soluble in most organic compounds and is easily oxidized. The process of vulcanization, sulfur cross-linkages, improves its tensile and thermal characteristics.

Nombre de vues : 20909 Article ajouté : 2 February 2011 Dernière modification de l'article : 8 February 2011 © Copyright 2010-2022 Retour en haut de page
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