polyethylene (PE)

polyethylene (PE)
Any of the polymers of ethylene, the largest class of plastics.

Its simple basic structure, of ethylene monomers, can be linear (high-density and ultrahigh-molecular-weight polyethylene; HDPE and UHMWPE, respectively) or branched to a greater or lesser degree (low-density and linear low-density polyethylene; LDPE and LLDPE, respectively). The branched polyethylenes have similar structural characteristics (e.g., low crystalline content), properties (high flexibility), and uses (packaging film, plastic bags, mulch, insulation, squeeze bottles, toys, and housewares). HDPE has a dense, highly crystalline structure of high strength and moderate stiffness; uses include beverage bottles, liquid detergent jugs, crates, barrels, and luggage. UHMWPE is made with molecular weights 6–12 times that of HDPE; it can be spun and stretched into stiff, highly crystalline fibres with a tensile strength many times that of steel; uses include bulletproof vests.

* * *

Universalium. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • Polyéthylène — Général …   Wikipédia en Français

  • Polyethylene — or polythene (IUPAC name poly(ethene)) is a thermoplastic commodity heavily used in consumer products (notably the plastic shopping bag). Over 60 million tons of the material are produced worldwide every year. Description Polyethylene is a… …   Wikipedia

  • Polyethylene — Polyéthylène Polyéthylène Général …   Wikipédia en Français

  • polyéthylène — [ pɔlietilɛn ] n. m. • 1946; de poly et éthylène ♦ Matière plastique obtenue par polymérisation de l éthylène, solide translucide, thermoplastique. ⇒ polythène. Propriétés isolantes du polyéthylène. ● polyéthylène nom masculin Nom générique de l… …   Encyclopédie Universelle

  • polyethylene — (n.) polymer of ethylene, 1862, from Fr. polyéthylène; see POLY (Cf. poly ) + ETHYLENE (Cf. ethylene). Related: Polyethylenic (1860) …   Etymology dictionary

  • polyethylene — ☆ polyethylene [päl΄ē eth′ə lēn΄ ] n. [ POLY(MER) + ETHYLENE] any of several thermoplastic resins, (C2H4) n, made by the polymerization of ethylene: used in making translucent, lightweight, and tough plastics, films, containers, insulation, etc …   English World dictionary

  • polyethylene — (PE) A polymer prepared by the polymerization of ethylene as the sole monomer; very resistant to chemical attack. High density polyethylene (HDPE) is used, e.g., for blow molded parts such as tanks for fuel, coolant, washer and brake fluid; low… …   Dictionary of automotive terms

  • polyethylene — macromolecule mac ro*mol e*cule, n. (Chem., Biochem.) A very large molecule, especially a polymer having from hundreds to many thousands of atoms, such as {DNA}, {RNA}, {protein}, {polysaccharide}, {polyethylene}, {polycarbonate}, etc. [PJC] …   The Collaborative International Dictionary of English

  • polyethylene — [[t]pɒ̱lie̱θɪliːn[/t]] N UNCOUNT Polyethylene is a type of plastic made into thin sheets or bags and used especially to keep food fresh or to keep things dry. [mainly AM] (in BRIT, usually use polythene) …   English dictionary

  • polyethylene — polietilenas statusas T sritis chemija formulė Formulę žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. polyethene, GB; polyethylene; polythene, GB rus. полиэтилен ryšiai: sinonimas – polietenas …   Chemijos terminų aiškinamasis žodynas

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”