A polymer of isoprene with a molecular weight of 100,000-1,000,000, this super resilient organic material can also contain traces of proteins and resins. Natural rubber latex is derived from the bark of trees such as Hevea brasiliensis or the “rubber tree”, which is native to South America and accounts for almost 100% of the world’s supply. This is then dried to give natural rubber. While isoprene is not strictly natural rubber, it is very similar in terms of structural and chemical composition and is easier to produce.
Known for their elasticity, tensile strength and abrasion resistance, natural rubber and isoprene can be used for similar applications that require flexibility and energy absorption. The former has more inherent green strength. This means it is more resistant to warping and breaking before it is vulcanised for added durability.