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The Amazon rubber cycle or boom (Portuguese: Ciclo da borracha, Brazilian Portuguese: [ˈsiklu da buˈʁaʃɐ]; Spanish: Fiebre del caucho, pronounced [ˈfjeβɾe ðel ˈkawtʃo]) was an important part of the socioeconomic history of Brazil and Amazonian regions of neighboring countries, being related to the commercialization of rubber and the genocide of indigenous peoples.
The Cazumbá-Iracema Extractive Reserve (Portuguese: Reserva Extrativista Cazumbá-Iracema) is an extractive reserve in the state of Acre, Brazil.The inhabitants extract rubber, Brazil nuts and other products from the forest for their own consumption or for sale, hunt, fish and engage in small-scale farming and animal husbandry.
Some natural rubber sources, such as gutta-percha, are composed of trans-1,4-polyisoprene, a structural isomer that has similar properties. Natural rubber is an elastomer and a thermoplastic. Once the rubber is vulcanized, it is a thermoset. Most rubber in everyday use is vulcanized to a point where it shares properties of both; i.e., if it is ...
Hevea brasiliensis, the Pará rubber tree, sharinga tree, seringueira, or most commonly, rubber tree or rubber plant, is a flowering plant belonging to the spurge family, Euphorbiaceae, originally native to the Amazon basin, but is now pantropical in distribution due to introductions.
Together with the worldwide decline on demand on natural rubber, the plantation was not cost-effective anymore. Ford sold it to the Brazilian government, which is still running the plantation under EMBRAPA. Today, the area of the plantation is some 10–20 km 2 (3.9–7.7 sq mi) covered extensively with mainly old rubber trees. It still gives ...
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Palaquium gutta. Gutta-percha is a tree of the genus Palaquium in the family Sapotaceae, which is primarily used to create a high-quality latex of the same name. The material is rigid, naturally biologically inert, resilient, electrically nonconductive, and thermoplastic, most commonly sourced from Palaquium gutta; it is a polymer of isoprene which forms a rubber-like elastomer.
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