A polymer is a substance or material comprising of huge particles, or macromolecules, made out of many rehashing subunits. Because of their expansive range of properties, both engineered and normal polymers assume basic and pervasive jobs in regular life. Polymers go from recognizable manufactured plastics, for example, polystyrene to characteristic biopolymers, for example, DNA and proteins that are basic to natural structure and capacity. Polymers, both regular and engineered, are made by means of polymerization of numerous little atoms, known as monomers. Their thus huge sub-atomic mass, comparative with little particle mixes, produces exceptional physical properties including strength, high flexibility, viscoelasticity, and an inclination to shape formless and semi crystalline structures as opposed to precious stones.

The expression "polymer" gets from the Greek word and, and alludes to enormous atoms whose structure is made out of various rehashing units, from which begins a quality of high relative sub-atomic mass and orderly properties. The units creating polymers determine, really or thoughtfully, from particles of low relative atomic mass. The term was authored in 1833 by Jöns Jacob Berzelius, however with a definition particular from the cutting edge IUPAC definition. The advanced idea of polymers as covalently fortified macromolecular structures was proposed in 1920 by Hermann Staudinger, who spent the following decade finding exploratory proof for this theory.

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