Polyethylene Terephthalate


Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Wikipedia.

polyethylene terephthalate

[¦päl·ē′eth·ə‚lēn ‚ter·ə′tha‚lāt]
(organic chemistry)
A thermoplastic polyester resin made from ethylene glycol and terephthalic acid; melts at 265°C; used to make films or fibers. Abbreviated PET.

Polyethylene Terephthalate

 

a polyester produced by polycondensation of terephthalic acid or its dimethyl ether with ethylene glycol.

Polyethylene terephthalate is a white, odorless solid with molecular weight 20,000–40,000; the maximum crystallinity of unoriented polyethylene terephthalate is 40–45 percent, and of the oriented variety, 60–65 percent; density, 1.38–1.40 g/cm3(20°C); melting point, 255°-265°C; softening point, 245°-248°C.

Polyethylene terephthalate is insoluble in water and organic solvents and is relatively resistant to dilute acid solutions, such as 70-percent H2SO4, 5-percent HCl, or 30-percent CH3COOH, and to cold solutions of alkalies and bleaching agents, for example, sodium hypochlorite or hydrogen peroxide. It hydrolyzes under the action of alkaline solutions at temperatures above 100°C and, at 200°C, even under the action of water.

Polyethylene terephthalate has high strength and resistance to abrasion and repeated tensile and bending stress, low hygro-scopicity (moisture content, 0.4–0.5 at 20°C and 60 percent relative humidity), and a working temperature range of –60° to 170°C. It is a good dielectric (loss tangent, 0.013–0.015 at 1 megahertz) and is relatively resistant to light, X rays, and γ-rays.

Polyethylene terephthalate is processed mainly into fibers and films, and also into various molded products, such as radio components and chemical equipment. World production of polyethylene terephthalate in 1973 was about 3.5 million tons.

REFERENCES

See references under

E. AIZENSHTEIN

References in periodicals archive ?
Your knowledge of polyethylene terephthalate market will become unparalleled.
Unique analysis of the polyethylene terephthalate market as well as detailed knowledge of both global and regional factors impacting the industry will take you one step further in managing your business environment.
Dimethyl terephthalate is produced in closed systems and used primarily within its own manufacturing facilities as a building block in the synthesis of polyethylene terephthalate plastics.
Detailed review of the present and past of the polyethylene terephthalate market and its forecast future is offered within the new market research study "Polyethylene Terephthalate (PET) 2011 World Market Outlook and Forecast up to 2016".
The study discusses the polyethylene terephthalate market statistics and offers the analytical review of production and consumption volumes in the reviewed regions, trade data, and prices for the material registered for the analysed period.
The report is accomplished by a list of major Polyethylene terephthalate suppliers and it profiles leading producers.
INTRODUCTION: POLYETHYLENE TEREPHTHALATE PROPERTIES AND USES
Taking into account that India and China are heavily populated it does not come as a surprise that these economies are key regional drivers for the global polyethylene terephthalate demand.
To keep up-to date with situation a selection of latest news in the Polyethylene Terephthalate market is provided.
Feedstock markets for Polyethylene Terephthalate (Monoethylene Glycol, Terephthalic Acid, Dimethyl Terephthalate) are briefly overviewed in the report.
INTRODUCTION, METHODOLOGY & PRODUCT DEFINITIONS Study Reliability And Reporting Limitations I-1 Disclaimers I-2 Data Interpretation & Reporting Level I-2 Quantitative Techniques & Analytics I-3 Product Definitions And Scope of Study I-3 Polyethylene Terephthalate (PET) I-3 Polyester I-3 Polybutylene Terephthalate (PBT) I-4

Full browser ?