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Rubber is a natural polymer of isoprene (polyisoprene), and an elastomer (a stretchy polymer). Polymers are simply chains of molecules that can be linked together. Rubber is one of the few naturally occurring polymers and prized for its high stretch ratio, resilience, and water-proof properties.
Hevea brasiliensis is a tall deciduous tree growing to a height of up to 43 m (141 ft) in the wild. Cultivated trees are usually much smaller because drawing off the latex restricts their growth. The trunk is cylindrical and may have a swollen, bottle-shaped base. The bark is some shade of brown, and the inner bark oozes latex when damaged.
Isoprene, or 2-methyl-1,3-butadiene, is a common volatile organic compound with the formula CH 2 =C (CH 3)−CH=CH 2. In its pure form it is a colorless volatile liquid. It is produced by many plants and animals [1] (including humans) and its polymers are the main component of natural rubber. C.
The Amazon rubber cycle or boom (Portuguese: Ciclo da borracha, Brazilian Portuguese: [ˈsiklu da buˈʁaʃɐ]; Spanish: Fiebre del caucho, pronounced [ˈfjeβɾe ðel ˈkawtʃo]) was an important part of the socioeconomic history of Brazil and Amazonian regions of neighboring countries, being related to the commercialization of rubber and the genocide of indigenous peoples.
In natural rubber, each cross-link produces a network node with four chains emanating from it. It is the network that gives rise to these elastic properties. Because of the enormous economic and technological importance of rubber, predicting how a molecular network responds to mechanical strains has been of enduring interest to scientists and ...
Adhesive. Adhesive, also known as glue, cement, mucilage, or paste, [1] is any non-metallic substance applied to one or both surfaces of two separate items that binds them together and resists their separation. [2] The use of adhesives offers certain advantages over other binding techniques such as sewing, mechanical fastenings, and welding.
Strain crystallization. Strain crystallization is a phenomenon in which an initially amorphous solid material undergoes a phase transformation due to the application of strain. Strain crystallization occurs in natural rubber, as well as other elastomers and polymers. [1] The phenomenon has important effects on strength and fatigue properties.
Structure of natural rubber, exhibiting the characteristic methyl group on the alkene group. The one terpene that has major applications is natural rubber (i.e., polyisoprene). The possibility that other terpenes could be used as precursors to produce synthetic polymers has been investigated as an alternative to the use of petroleum-based ...
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