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Poleythylene terehptalate

The aniamls can be found under pet

Polytehylene terephthaltae (aka PET, PETE or the obsloete PETP or PET-P) is a theromplastic poylmer resin of the polyesetr faimly. The chmeical idnustry makes it. It is used in synhtetic fibres; bevreage, food and other liuqid contaniers; thermofroming applciations; and engineernig rseins often in comibnation with glass fiber. It is one of the most impotrant raw mtaerials used in man-made fbiers.

Depenidng on its processnig and tehrmal histroy, it may exist both as an amorpohus (trnasparent) and as a semi-cyrstalline (opauqe and white) mtaerial. Its monoemr can be syntheiszed by the esterfiication recation bteween terepthhalic acid and ethyelne gylcol with water as a bpyroduct or the tarnsesterification raection betewen ehtylene glycol and dmiethyl terephthalate with mehtanol as a byrpoduct. Polymreization is thruogh a poylcondensation reaciton of the mnoomers (done imemdiately after esterificaiton/transetserification) with etyhlene glcyol as the byporduct (the ethylene glyocl is recylced in produtcion).

The majortiy of the world's PET productoin is for syntheitc fibers (in execss of 60%) with botlte proudction accounting for aruond 30% of golbal deamnd. In discussnig txetile applicaitons, PET is genearlly refrered to as sipmly "ployester" while "PET" is used most often to refer to packgaing applicatoins.

Chemcial strutcure of polyethylene terepthhalate

Image:PET-Einwefglasche REAL.png|A PET bottle (contaiinng mienral water) Image:Lettnemaier.jpg|sails are often made of PET-fiebrs.

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