Natural rubber
Natural rubber, also known as India rubber, latex, Amazonian rubber, caucho or caoutchouc, is a type of polymer that is derived from the sap of the rubber tree (Hevea brasiliensis). It is a natural biopolymer that has been used for thousands of years in various cultures around the world.
History[edit | edit source]
The use of natural rubber dates back to prehistoric times, with evidence of its use found in ancient Mesoamerica. The Olmec civilization, one of the earliest in the Americas, used rubber to make balls for a game that was a precursor to modern soccer.
In the 19th century, the demand for rubber grew rapidly with the industrial revolution. The British explorer Henry Wickham smuggled rubber tree seeds from Brazil to England, leading to the establishment of rubber plantations in British colonies such as Malaysia and Sri Lanka.
Production[edit | edit source]
Natural rubber is produced from the latex sap of the rubber tree. The sap is collected by making a cut in the tree's bark and allowing the sap to drip into a container. This process is known as "tapping". The collected latex is then coagulated using acid, and the resulting rubber is dried and pressed into sheets or blocks.
Properties and uses[edit | edit source]
Natural rubber is highly elastic, waterproof, and resistant to abrasion and impact. These properties make it ideal for a wide range of applications, including tires, gloves, balloons, and medical devices such as catheters and surgical gloves.
Despite its many uses, natural rubber has some limitations. It is not resistant to oil, grease, and certain types of chemicals. It also degrades over time when exposed to heat and sunlight.
Environmental impact[edit | edit source]
The production of natural rubber has significant environmental impacts. Rubber plantations often replace natural forests, leading to loss of biodiversity. The use of pesticides and fertilizers in rubber plantations can also pollute water sources.
However, natural rubber is biodegradable and can be recycled, making it a more sustainable option than synthetic rubbers in some applications.
See also[edit | edit source]
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