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== Organic polymers == The eight most common types of synthetic organic polymers, which are commonly found in households are: *[[Low-density polyethylene]] (LDPE) *[[High-density polyethylene]] (HDPE) *[[Polypropylene]] (PP) *[[Polyethylene]] (PE) *[[Polyvinyl chloride]] (PVC) *[[Polystyrene]] (PS) *[[formaldehyde]]. *[[Nylon]], nylon 6, nylon 6,6 *[[Teflon]] (Polytetrafluoroethylene) *[[Thermoplastic polyurethanes]] (TPU) {| class="wikitable" |+ List of some [[addition polymers]] and their uses |- ! ! Polymer !! Abbreviation !! Properties !! Uses |- | | [[Low-density polyethylene]] || LDPE || [[Chemically inert]], flexible, [[insulator (electricity)|insulator]] || [[Squeeze bottle]]s, toys, flexible pipes, insulation cover (electric wires), [[six-pack rings]], etc. |- | | [[High-density polyethylene]] || HDPE || Inert, [[Thermal stability|thermally stable]], tough and high [[tensile strength]] || Bottles, pipes, inner insulation (dielectric) of [[coax cable]] (see also PTFE), plastic bags, etc. |- | | [[Polypropylene]] || PP || Resistant to [[acids]] and [[alkali]]es, High tensile strength || Auto parts, industrial fibers, food containers, liner in bags, dishware and as a wrapping material for textiles and food |- | | [[Polystyrene]] (thermocole) || PS || Thermal insulator. Properties depends on the form, expanded form is tough and rigid || [[Petri dishes]], [[CD case]], [[plastic cutlery]] |- | | [[Polytetrafluoroethylene]] || PTFE || Very low [[coefficient of friction]], excellent [[dielectric]] properties, chemically inert || Low friction [[bearing (mechanical)|bearing]]s, [[non-stick pan]]s, inner insulation (dielectric) of [[coax cable]] (see also HDPE), coating against chemical attack etc. |- | | [[Polyvinyl chloride]] || PVC || Insulator, flame retardant, chemically inert || Pipe (mainly draining), [[fencing]], lawn chairs, hand-bags, [[curtain]] clothes, non-food bottles, [[raincoat]]s, toys, vinyl [[flooring]], electrical installation insulations, etc. |- | | [[Polychlorotrifluoroethylene]] || PCTFE || Stable to heat and thermal attacks, high tensile strength and non [[wetting]] || [[valves]], seals, [[gaskets]] etc. |}
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