Recycled polyethylene terephthalate

Fibre was the original outlet for recycled polyethylene terephthalate (rPET) and it still consumes a very large tonnage. In 2001, 144,000 tonnes of rPET (62% of all European supply) were used in fibre applications whereas in 2008, 363,000 tonnes of rPET (45% of all European supply) were used in fibre production. Early uses of 

For blends consisting of multiple ratios of vPET and rPET, at elevated temperature, the tensile strength and modulus of elasticity of vPET were higher than rPET and its blends In conclusion, the mechanical properties vPET/rPET blends are worse than those of the vPET [10]. 

000 tonnes of rPET were used to produce clear sheet in 2008. The majority of this sheet was thermoformed to produce blisters, collation trays, clam shells and punnets to protect soft fruits and other contents. The sheet industry has long had the ability to extrude multilayer sheets and this enabled them to sandwich an rPET layer between two outer layers of vPET, particularly for food outlet products [9]. In 2001, just 16,000 tonnes of rPET were used to produce containers, almost all for nonfood. The passing of European Union (EU) Regulation 282/2008 on recycled plastic materials and articles intended to come into contact with foods has meant that all EU member countries will allow rPET from approved plants to be used in food contact containers. Large and small brands used 163,000 tonnes of rPET in containers in 2008 [9]. 

Strapping tape and green bands, that keep bricks and boxes firmly held on their transport pallets, has been a steady outlet for rPET 88,000 tonnes were used in Europe in 2008. 

A new application from Dymon Pallets Pty in Australia is a transport pallet moulded from a 25 kg preform (big enough to contain a 10-year-old child). The company estimates that in 2005, over 1 million timber pallets were made in the USA alone and rPET pallets could absorb the world s production of rPET [9]. 

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High Performance Polymers 13, No.2, June 2001, p.S365-71 SURFACTANTS BASED ON RECYCLED POLYETHYLENE TEREPHTHALATE FOR BREAKING WATER-IN-OIL EMULSIONS Abdel-Azim A-AA El-Sukkary M M A Egyptian Petroleum Researeh Institute... 

Dulio, V., Po, R., Borelli, R., Guarini, A. and Santini, C., Characterization of low-molecular-weight oligomers in recycled polyethylene terephthalate), Angew. Makromol. Chem., 225, 109-122 (1995). 

Franz, R., Recycled Polyethylene terephthalate) for direct food contact application, FDA submission CTS 71903, Petitioner Buhler A. G, Representative Laboratory Fraunhofer Institute for Process Engineering and Packaging, Freising, Germany, Petition to the FDA, 2000. 

In the industrial field, this separation technique has been used for purposes as diverse as the analysis of odour and taste problems in high-density polyethylene [93], contaminants in recycled high-impact polystyrene [94], benzene residues in recycled polyethylene terephthalate [95] and denture adhesives [96], residual toluene in medical plasters [97], and lipstick (for assignation of products to manufacturers) [98,99]. 

Recycling of unwanted polymers is the best solution, and six types of plastics in common use are frequently stamped with identifying codes assigned by the Society of the Plastics Industry (Table 31.2). After sorting by type, the items to be recycled are shredded into small chips, washed, dried, and melted for reuse. Soft-drink bottles, for instance, are made from recycled polyethylene terephthalate), trash bags are made from recycled low-density polyethylene, and garden furniture is made from recycled polypropylene and mixed plastics. 

RF resorcinol formaldehyde RPET recycled polyethylene terephthalate... 

As PET is nonbiodegradable, recycling is an appropriate use of the resource. PET bottles have been recycled since the 1970s (Awajaa and Pavelb, 2005). However, the quality of the resulting recycled polyethylene terephthalate (RPET) depends on whether the bottles to be recycled contain contaminants including dust, colouring, acids and water (Awajaa and Pavelb, 2005). 

K.A. Tawab, S.M. Ibrahim, M.M. Magida, The effect of gamma irradiation on mechanical, and thermal properties of recycling polyethylene terephthalate and low density polyethylene (R-PET/LDPE) blend compatibilized by ethylene vinyl acetate (EVA). J. Radioanal. Nucl. Chem. 295, 1313-1319 (2013)... 

Eid, A., Mikitaev, M. A., Bedanokov, A. Y, and Mikitaev, A. K. Recycled Polyethylene Terephthalate/Organo-Montmorillanite Nanocomposites, Formation and Properties. The first Afro-Asian Conference on Advanced Materials Science and Technology (AMSAX 06), Egypt (2006). 

RPET recycled polyethylene terephthalate TPE thermoplastic elastomer... 

Polyethylene terephthalate (PET) is a synthetic polymer formed by the reaction of ethylene glycol (HOCH2CH2OH) and terephthalic acid. Because PET is lightweight and impervious to air and moisture, it is commonly used for transparent soft drink containers. PET is also used to produce synthetic fibers, sold under the trade name of Dacron. Of the six most common synthetic polymers, PET is the most easily recycled, in part because beverage bottles that bear the recycling code "1" are composed almost entirely of PET. Recycled polyethylene terephthalate is used for fleece clothing and carpeting. In Chapter 30, we learn about the preparation and properties of synthetic polymers like polyethylene terephthalate. 

In the Master s dissertation entitled Effect of natural and accelerated ageing on the properties of PET/PC (80/20) blend , recycled polyethylene terephthalate (rPET) was blended with PC (80/20 wt/wt), and then submitted to natural ageing in the city of Rio de Janeiro [17]. For comparison purposes, we also monitored the accelerated ageing of the blend in an appropriate chamber under the same conditions, 2,000 h of exposure were performed. The Fourier-Transform infrared spectroscopy revealed the tendency of the PET and PC carbonyl indices to decrease upon an increase in... 

Creep Model of Recycled Polyethylene Terephthalate Polymer Concrete... 

Applications of Recycled Polyethylene Terephthalate in Food Packaging... 

Recycled Polyethylene Terephthalate in Textile or Bottle Applications... 

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