Natural rubber ยางพารา ยางพารา ยางพารา, also called Of india Rubber or caoutchouc, is an elastomer (an elastic hydrocarbon polymer) which was originally derived from latex, a milky colloid created by some plants. The plants would be ‘tapped’, that is, an incision converted to the bark with the tree and the sticky, milk colored latex sap collected and refined right into a usable rubber. The purified type of natural rubber may be the chemical polyisoprene, which can also be produced synthetically. Natural rubber can be used extensively in many applications and items, as is artificial rubber. It is typically very stretchy and flexible and intensely waterproof.
The para rubberized tree initially grew in South usa. Charles Marie de La Condamine is paid with introducing samples of rubber to the Académie Royale des Sciences of France in 1736. [2] In 1751, he presented the paper by François Fresneau towards the Académie (eventually published in 1755) which described most of the properties of rubberized. This has been called 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 bit of the material was good for rubbing away from pencil marks on paper, hence the name rubber. Later it slowly and gradually made its approach around England.
South America remained the primary source of the limited numbers of latex rubber that were used during much of the 19th century. In 1876, Henry Wickham gathered a large number of para rubber tree seeds from Brazil, and these had been germinated in Kew Backyards, England. The seedlings were then sent to Ceylon (Sri Lanka), Indonesia, Singapore and Uk Malaya. Malaya (now Malaysia) was later to become the biggest manufacturer of rubber. About 100 years back, the Congo Totally free State in Photography equipment was also a significant source of organic rubber latex, mostly gathered through forced labour. Liberia and Nigeria also started production of rubber.
In India, commercial cultivation of natural rubber was introduced through the British planters, although the experimental efforts to grow rubber on the commercial scale inside India were initiated as early as 1873 at the Botanical Gardens, Calcutta. The first industrial Hevea plantations inside India were set up at Thattekadu inside Kerala in 1902. In the 19th and early twentieth century, it was often called “India rubber. ” In 2010, India’s natural rubberized consumption stood at 0. 978 million tons each year, with production at 0. 893 million lots; the rest was imported having an import duty of 20%.
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