Natural rubber ยางพารา ยางพารา ยางพารา, also called Indian Rubber or caoutchouc, is an elastomer (an elastic hydrocarbon polymer) that was originally derived through latex, a milky colloid made by some plants. The plants would be ‘tapped’, that is, an incision made into the bark from the tree and the sticky, milk colored latex sap collected and refined right into a usable rubber. The purified kind of natural rubber may be the chemical polyisoprene, which can additionally be produced artificially. Natural rubber is used extensively in many applications and items, as is synthetic rubber. It is usually very stretchy and flexible and intensely waterproof.
The para rubberized tree initially grew in South america. Charles Marie de L . a . Condamine is acknowledged with introducing examples of rubber to the Académie Royale des Sciences of France in 1736. [2] In 1751, he presented a paper by François Fresneau towards the Académie (at some point published in 1755) which described most of the properties of rubberized. This has been referred to as the first scientific paper on rubberized. When samples of rubber first found its way to England, it was noticed by Joseph Priestley, in 1770, that a little bit of the material was extremely good for rubbing off pencil marks in writing, hence the title rubber. Later it gradually made its approach around England.
South America remained the primary source of the limited amounts of latex rubber which were used during much of the 19th millennium. In 1876, Henry Wickham gathered thousands of para rubber tree seeds from Brazil, and these were germinated in Kew Landscapes, England. The seedlings were then provided for Ceylon (Sri Lanka), Indonesia, Singapore and Uk Malaya. Malaya (right now Malaysia) was later being the biggest producer of rubber. About 100 years back, the Congo Free State in Africa was also a substantial source of organic rubber latex, mostly gathered simply by forced labour. Liberia and Nigeria additionally started production of rubber.
In India, commercial cultivation of natural rubber was introduced through the British planters, although the experimental efforts to develop rubber on a commercial scale in India were initiated as early as 1873 at the Botanical Gardens, Calcutta. The first industrial Hevea plantations in India were established at Thattekadu in Kerala in 1902. In the nineteenth and early 20th century, it was categorised as “India rubber. ” In 2010, India’s natural rubberized consumption stood from 0. 978 million tons each year, with production from 0. 893 million lots; the rest was imported having an import duty of 20%.
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