单词 | polyethylene |
释义 | polyethylenen. I. Compounds. 1. Chemistry. Forming the names of polymeric substances prepared from derivatives of ethylene. ΘΚΠ the world > matter > chemistry > polymer chemistry > polymers (named others) > [noun] > polyethylene glycol polyethylene alcohol1862 polyethylene glycol1886 polyglycol1889 PEG1959 society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > other polymers polyethylene alcohol1862 polyethylene glycol1886 polyglycol1889 polyanhydride1900 latex1912 polyether1922 polyvinyl alcohol1927 polyamide1929 polycarbonate1930 polyethylene oxide1930 polyacrylonitrile1935 bouncing putty1944 polyvinyl pyrrolidone1945 povidone1955 fibrid1960 1862 W. A. Miller Elements Chem. (ed. 2) III. 251 (note) These bodies [sc. glycol, diethylene alcohol and triethylene alcohol]..are termed polyethylene alcohols by Wurtz. 1884 H. E. Roscoe & C. Schorlemmer Treat. Chem. III. ii. 37 Ethylene glycol,..in its turn, combines with the free ethylene oxide to form polyethylene alcohols. b. polyethylene glycol n. any polymer of ethylene glycol; esp. any of a series of water-soluble oligomers and polymers which have the structure H(OCH2CH2)nOH, of which the lower members are used as solvents and the higher are chiefly waxes; abbreviated PEG. ΘΚΠ the world > matter > chemistry > polymer chemistry > polymers (named others) > [noun] > polyethylene glycol polyethylene alcohol1862 polyethylene glycol1886 polyglycol1889 PEG1959 society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > other polymers polyethylene alcohol1862 polyethylene glycol1886 polyglycol1889 polyanhydride1900 latex1912 polyether1922 polyvinyl alcohol1927 polyamide1929 polycarbonate1930 polyethylene oxide1930 polyacrylonitrile1935 bouncing putty1944 polyvinyl pyrrolidone1945 povidone1955 fibrid1960 1886 E. F. Smith tr. V. von Richter Chem. Carbon Compounds 258 (heading) Polyethylene glycols [Ger. Polyaethylenglycole] or alcohols. 1947 R. L. Wakeman Chem. Commercial Plastics xxvi. 779 Polyethylene glycols are..soluble in both water and aromatic hydrocarbons. 1993 Pop. Sci. June 122/2 A..company called Enzon..tags the molecule with a polyethylene glycol (PEG) chemical group. PEG prevents the hemoglobin from passing through the kidney and makes it circulate longer in the blood. c. polyethylene oxide n. any polymer in which the repeating unit is the group —OCH2CH2—; esp. any of a class of thermoplastics of high molecular weight made from ethylene oxide or ethylene glycol (usually by copolymerization of both) and used esp. as water-soluble films. ΘΚΠ society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > other polymers polyethylene alcohol1862 polyethylene glycol1886 polyglycol1889 polyanhydride1900 latex1912 polyether1922 polyvinyl alcohol1927 polyamide1929 polycarbonate1930 polyethylene oxide1930 polyacrylonitrile1935 bouncing putty1944 polyvinyl pyrrolidone1945 povidone1955 fibrid1960 the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > thermoplastic resins > polyethylene oxide polyethylene oxide1930 Polyox1957 1930 Chem. Abstr. 24 3003 On cooling the fused polyethylene oxides they crystallize like paraffin. 1998 New Scientist 2 May 17/2 The chewable pills have layers of two common polymers—ethylcellulose and polyethylene oxide—to coat tiny beads of the drug. d. polyethylene terephthalate n. a thermoplastic condensation polymer of ethylene glycol and terephthalic acid which is widely used to make polyester fibres and drinks containers; abbreviated PET. ΘΚΠ the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > thermoplastic resins > other miscellaneous polyphenylene oxide1921 polyamide1929 polycarbonate1930 polyacetal1931 polypropylene1935 polymethyl methacrylate1936 polyethylene terephthalate1946 Dacron1951 polyacrylic1959 polyallomer1962 ionomer1964 parylene1965 society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > plastic > capable of hardening after heating or (re)shaping > specific thermoplastic materials Rhodoid1918 polyphenylene oxide1921 picein1926 Parafilm1934 nylon1938 polyethylene1939 polythene1939 Saran1940 alkathene1941 polyethylene terephthalate1946 Visqueen1948 Lexan1956 1946 W. T. Astbury & C. J. Brown in Nature 14 Dec. 871 Polyethylene terephthalate (terylene) gives a well-oriented x-ray fibre diagram. 1993 Coloradoan (Fort Collins) 18 Apr. e4/1 About one-fourth of all plastic soda bottles, known as polyethylene terephthalate (PET) are being recycled. II. Simple uses. Chiefly North American. 2. = polythene n. ΘΚΠ the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > thermoplastic resins > polythene polyethylene1939 polythene1939 poly1964 society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > plastic > capable of hardening after heating or (re)shaping > specific thermoplastic materials Rhodoid1918 polyphenylene oxide1921 picein1926 Parafilm1934 nylon1938 polyethylene1939 polythene1939 Saran1940 alkathene1941 polyethylene terephthalate1946 Visqueen1948 Lexan1956 1939 Plastics 3 289/1 Compounding polyethylenes with polyisobutylenes has yielded some very useful compounds. 1967 Economist 30 Sept. 1225/1 Heavy over-capacity seems to be on the way in Europe in the production of high-density polyethylene (polythene). 1989 Green Mag. Dec. 86/2 Ark packages its liquid detergents in polyethylene bottles with polypropylene caps and says that it is safe to burn these on a fire. 2001 Canoe & Kayak Mar. 82/2 Frames are made of wood or aluminum long pieces combined with cross ribs of polycarbonate or polyethylene. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < |
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