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Polyethylene terephthalate is produced largely from purified terephthalic acid (PTA), as well as to a lesser extent from (mono-)ethylene glycol (MEG) and dimethyl terephthalate (DMT). [41] [5] As of 2022, ethylene glycol is made from ethene found in natural gas, while terephthalic acid comes from p-xylene made from crude oil.
Polyethylene Terephthalate is one of the most common polymers in its polyester family. Its global market size was estimated to be worth 37.25 billion USD in 2021. [ 1 ] Polyethylene terephthalate is used in several applications such as; textile fibres, bottles, rigid/flexible packaging, and electronics.
With 18% market share of all plastic materials produced, it ranges third after polyethylene (33.5%) and polypropylene (19.5%) and is counted as commodity plastic. There are several reasons for the importance of polyethylene terephthalate: The relatively easy accessible raw materials PTA or DMT and MEG
PepsiCo introduced the first two-liter sized soft drink bottle in 1970. [1] Motivated by market research conducted by new marketing vice president John Sculley (who would later be known for heading Apple Inc. from 1983 to 1993), [2] the bottle and the method of its production were designed by a team led by Nathaniel Wyeth of DuPont, who received the patent in 1973. [3]
Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while investigating diazomethane. [12] [a] [13] [b] When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance that he had created, they recognized that it contained long −CH 2 − chains and termed it polymethylene.
BoPET (biaxially oriented polyethylene terephthalate) is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, [1] chemical stability, [1] dimensional stability, [2] transparency [1] reflectivity, and electrical insulation. [1] When metallized, it has [3] gas and moisture barrier ...
The plastic kits and covers are mostly made of synthetic polymers like polythene, and tires are manufactured from polybutadienes. [1] However, due to the environmental issues created by these synthetic polymers which are mostly non-biodegradable and often synthesized from petroleum, alternatives like bioplastics are also being considered.
The terephthalate polymer PETE and the phthalate ester plasticizers are chemically different substances. [83] Despite this, however, many studies have found phthalates, such as DEHP in bottled water and soda. [84] One hypothesis is that these may have been introduced during plastic recycling. [84]