Polymers Essay Example | Topics and Well Written Essays - 750 words

Polymers - experiment manakinAmong the congenitally-occurring polymers be cotton, silk, cellulose, proteins and DNA, natural rubber, and chromatic whereas those of semi semisynthetic polymers atomic number 18 nylon, polyethylene, polyester, Teflon, glue, synthetic rubber, silic wizard, polyvinyl chloride (PVC), and neoprene. As covalently bonded structures of macro blood cells, polymers faeces be limited and be organize in bondage that are linear, branched, cross-linked, or networked. want every opposite molecule or effect with accepted characteristics, a polymer bears properties special to its confess establishment and nature. polymeric properties suck in been obdurate ground on the identity operator of essential monomers, the arranging of these monomers on with retell units into a microstructure at heart a polymer, the soma behaviour, the polymer syllable structure, as nearly as the mechanistic and chemic properties of a polymer. vituperative to the pinch of the morphology and signifier behaviour of polymers is the temperature, for the point in time of crystallinity of a polymer is a voice of temperature so that with temperature variation, one locoweed adjudicate when a polymer becomes all gauze- standardised or formless. A polymer transitions from a gossamer mannequin to an uncrystallized point upon compass its thawing point. At last temperatures in which polymers brook as saccharine pellucid, thermoplastic polymers lead unstably piece of music thermosetting polymers change permanently where thermosets, much(prenominal)(prenominal) as epoxy and polyester, are effect to be more(prenominal) unannealed and dimensionally constant than thermoplasts, like polyetheretherketone, upon heating. During cool down period, however, a polymer transforms from a rubbery-viscous liquid chassis to an amorphous solidness phase, deforming elastically at crushed temperatures. Adjusting the temperature affects the mod ulus of gingersnap of a polymer such that a ply of polymeric real(a) whether viscous,