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Recycling of Poly Ethylene Terephthalate

Paszun D, Spychaj T. Chemical recycling of poly (ethylene terephthalate). Ind Eng Chem Res 1997 36 1373-1380. [Pg.291]

Evstatiev M, Fakirov S, Krasteva B, Friedrich K, Covas J A and Cunha A M (2002) Recycling of poly(ethylene terephthalate) as polymer-polymer composites, Polym Eng Sci 42 826-835. [Pg.557]

Hu, L.-C. Oku, A. Yamada, E. Tomari, K. Alkali-Decomposition of Poly(ethylene terphthalate) in Mixed Media of Nonaqueous Alcohol and Ether. Study on Recycling of Poly(ethylene terephthalate). Polym. J. 1997, 29, 708-712. [Pg.30]

Paszun D and Spychaj T (1997) Chemical recycling of poly(ethylene terephthalate),... [Pg.593]

M. Evstatiev, S. Fakirov, B.Krasteva,K. Friedrich, J. A. Covas M. Cunha. Recycling of Poly(ethylene terephthalate) as Polymer-Polymer Composites. Polym. Eng. Sci., 42, 826-835 (2002). [Pg.2088]

The overall yield of the process is at least 87 mol %, and 2.3 mol of methanol per mole of final product are needed, an excess of 15% over the 2.0 theoretical amount. The methanol can be recycled from the manufacture of poly(ethylene terephthalate). Reported utilities consumptions per kilogram of product are 1.2 kg of 1400-kPa steam, 420 kj of boiler fuel, and 0.5 kWh of electricity (72). [Pg.489]

The pyrolysis process for waste recycling is frequently done at larger scale than analytical pyrolysis. However, analytical pyrolysis studies are performed independently for the understanding and the optimization of such processes [10,16-19]. Also, model mixtures can be used in parallel with real samples. For example, the comparison of thermal degradation products from real municipal waste plastic and model mixed plastics can help understand the compounds generated in waste incinerators. In one such study [20], analytical pyrolysis of real municipal plastic waste obtained from Sapporo, Japan and model mixed plastics was carried out at 430 °C in atmospheric pressure by batch operation. The chlorinated hydrocarbons found in degradation liquid products of poly(ethylene)/poly(propylene)/ poly(styrene)/poly(vinyl chloride) and other polymeric mixtures were monitored. It was determined that the presence of poly(ethylene terephthalate), in addition to chlorinated plastics in the waste, facilitates... [Pg.174]

Polymer concretes show excellent mechanical properties and chemical resistance compared with conventional cement concretes. Polymer concretes can be cured quickly by the use of curing agents. Thus, the applications of polymer concretes are being increased. One of the popular polymers for polymer concretes is unsaturated polyester (UPE) resin. The properties of UPE resin can be modified by changing its molecular features. For the synthesis of the resin, phthalic anhydride or isophthalic acid as well as maleic anhydride can be employed to modify the mechanical properties or hydrothermal resistance. Terephthalic acid which is also used for the synthesis of poly ethylene terephthalate (PET) enhances the thermal resistance of the cured UPE resin. However, the synthesis of unsaturated polyester resin from terephthalic acid is difficult. One method to synthesize unsaturated polyester from terephthalic acid is the use of recycled PET. [Pg.2]

Recycling rates are also greatly influenced by the type of plastic and its application, thus in 2011, 29% of high density poly(ethylene), HDPE, bottles and 29% of poly(ethylene terephthalate), PET, bottles and jars in the USA were recycled. The primary market for plastics from recycled PET bottles is as fibres for carpet and textiles, while that for recycled HDPE is bottles. ... [Pg.201]

M. Pracella, L. Rolla, D. Chionna, and A. Galeski, Compatibilization and properties of poly(ethylene terephthalate)/polyethylene blends based on recycled materials, Macromol. Chem. Phys., 203(10-11) 1473-1485, July 2002. [Pg.229]

Mishra, S. Goje, A S. Zope, V.S. Chemical Recycling, Kinetics, and Thermodynamics of Poly(Ethylene Terephthalate) (PET) Waste Powder by Nitric Acid Hydrolysis. Polymer Reaction Engineering. 2003,11, 79-99. [Pg.29]

C. Chen. Study of Glycolysis of Poly(ethylene terephthalate) Recycled from Postconsumer Soft-Drink Bottles. III. Further Investigation. J. Appl. Polym. ScL, 87, 2004-2010 (2003). [Pg.2089]

Propylene oxide has found use in the preparation of polyether polyols from recycled poly(ethylene terephthalate) (264), haUde removal from amine salts via halohydrin formation (265), preparation of flame retardants (266), alkoxylation of amines (267,268), modification of catalysts (269), and preparation of cellulose ethers (270,271). [Pg.143]

Nor is it tme that poly(ethylene terephthalate) (PET) and high density polyethylene (HDPE) packaging are hsted as 1 and 2 in the Society of the Plastics Industry (SPI) recycling coding system because they are the most recyclable. The numbers assigned to each plastic in the SPI coding system are purely arbitrary and do not redect the material s recyclabihty. [Pg.509]

Transesterification has a number of important commercial uses. Methyl esters of fatty acids are produced from fats and oils. Transesterification is also the basis of recycling technology to break up poly(ethylene terephthalate) [25038-59-9] to monomer for reuse (29) (see Recycling, plastics). Because vinyl alcohol does not exist, poly(vinyl alcohol) [9002-89-5] is produced commercially by base-cataly2ed alcoholysis of poly(vinyl acetate) [9003-20-7] (see Vinyl polymers). An industrial example of acidolysis is the reaction of poly(vinyl acetate) with butyric acid to form poly(vinyl butyrate) [24991-31-9]. [Pg.388]

Poly(ethylene terephthalate) (PET) is one of the most extensively recycled polymeric materials. In 1995, 3.5 x 104 tons of PET were recycled in Europe.1 The main reason for the widespread recycling of PET is its extensive use in plastic packaging applications, especially in the beverage industry as plastic bottles. The consistency in terms of volume and availability of postconsumer bottles from sorting facilities and its high material scrap value create an excellent economic environment for PET recycling. [Pg.527]

In America there are promising signs for certain polymers. For example, poly(ethylene terephthalate) drinks bottles can be cleaned and recycled to give an acceptable grade of PET resin in a process that is economically viable. The recycled polymer is used as carpet fibre, furniture stuffing, or insulation. Waste nylon can also be recycled profitably. [Pg.166]

Macromolecular Materials and Engineering 286, No. 10, 25th Oct.2001, p.640-7 POLY(ETHYLENE TEREPHTHALATE) RECYCLING AND RECOVERY OF PURE TEREPHTHALIC ACID. KINETICS OF A PHASE TRANSFER CATALYZED ALKALINE HYDROLYSIS... [Pg.33]

Techniques for chemical recycling of waste saturated polyesters, mainly poly(ethylene terephthalate) and of waste polyurethanes to produce polyurethanes are reviewed. 29 refs. Articles from this journal can be... [Pg.54]

See other pages where Recycling of Poly Ethylene Terephthalate is mentioned: [Pg.546]    [Pg.714]    [Pg.149]    [Pg.780]    [Pg.714]    [Pg.546]    [Pg.714]    [Pg.149]    [Pg.780]    [Pg.714]    [Pg.230]    [Pg.487]    [Pg.606]    [Pg.748]    [Pg.230]    [Pg.230]    [Pg.229]    [Pg.714]    [Pg.213]    [Pg.149]    [Pg.780]    [Pg.1360]    [Pg.714]    [Pg.332]    [Pg.2087]    [Pg.230]    [Pg.231]    [Pg.314]    [Pg.32]    [Pg.2]   


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