In Nazi Germany, research projects tried to use dandelions as a base for rubber production, but failed. In the wild types of dandelion, latex content is low and varies greatly. The latex exhibits the same quality as the natural rubber from rubber trees. spp.) Ĭongo rubber, formerly a major source of rubber, which motivated the atrocities in the Congo Free State, came from vines in the genus Landolphia ( L. Congo rubber ( Landolphia owariensis and L. A properly managed tree responds to wounding by producing more latex for several years. This species is preferred because it grows well under cultivation. Once native to Brazil, the species is now pan-tropical. The major commercial source of natural rubber latex is the Amazonian rubber tree ( Hevea brasiliensis), a member of the spurge family, Euphorbiaceae. Varieties Amazonian rubber tree ( Hevea brasiliensis) Industrial demand for rubber-like materials began to outstrip natural rubber supplies by the end of the 19th century, leading to the synthesis of synthetic rubber in 1909 by chemical means. In most of its useful forms, it has a large stretch ratio and high resilience and also is water-proof. Natural rubber is used extensively in many applications and products, either alone or in combination with other materials. The coagulated lumps are collected and processed into dry forms for sale. In major areas, latex is allowed to coagulate in the collection cup. ![]() The latex then is refined into the rubber that is ready for commercial processing. The latex is a sticky, milky and white colloid drawn off by making incisions in the bark and collecting the fluid in vessels in a process called "tapping". Types of polyisoprene that are used as natural rubbers are classified as elastomers.Ĭurrently, rubber is harvested mainly in the form of the latex from the rubber tree ( Hevea brasiliensis) or others. Thailand, Malaysia, Indonesia, and Cambodia are four of the leading rubber producers. Rubber, also called India rubber, latex, Amazonian rubber, caucho, or caoutchouc, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds. Latex being collected from a tapped rubber tree, Cameroon Rubber tree plantation in Thailand Pieces of natural vulcanized rubber at Hutchinson's Research and Innovation Center in France. For man-made rubber materials, see Synthetic rubber. To help victims of human trafficking we have partnered with Winrock International and provided relief, training to migrant workers.This article is about the polymeric material "natural rubber".Apart from the above projects during covid, we have also provided relief and supports to various institutions like school, defense etc.‘Ahar Hobe Shobar Ghore’ – This campaign was initiated mainly for Middle Class families who suffered during the pandemic but could not ask for direct help due to social barriers.We have provided relief food, masks, sanitizers, oxygen. We have served almost 500,000 families so far. This program was initiated for struggling people who are in need of support. ‘Pashe Achi Bangladesh’ – We began this campaign during COVID-19.We strongly ensure our activities are sustainable and benefits the community for the foreseeable future. RFL’s CSR activities is based upon 4 pillars, Healthcare, Education, Community Development and Environment.
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