Difference between revisions of "Polyethylene terephthalate"
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A type of [[polyester resin|polyester]] made by condensing [[ethylene glycol]] and [[terephthalic acid]]. In 1951, polyethylene terephthalate (PET) became the first commercially marketed polyester. It was sold as [[Dacron|Dacron®]] in the U.S. and as Terylene in Great Britain. PET is extremely durable and dimensionally stable. It is resistant to abrasion, chemicals. PET is used to make [[Mylar|Mylar®]] and other strong moisture-resistant films used in packaging, photographs, x-rays and audio/visual tapes. Since 1977, PET has been widely used in food containers, especially for carbonated beverages. Recycled PET is used as fiberfill and in cast resins, such as boat hulls and shower units. | A type of [[polyester resin|polyester]] made by condensing [[ethylene glycol]] and [[terephthalic acid]]. In 1951, polyethylene terephthalate (PET) became the first commercially marketed polyester. It was sold as [[Dacron|Dacron®]] in the U.S. and as Terylene in Great Britain. PET is extremely durable and dimensionally stable. It is resistant to abrasion, chemicals. PET is used to make [[Mylar|Mylar®]] and other strong moisture-resistant films used in packaging, photographs, x-rays and audio/visual tapes. Since 1977, PET has been widely used in food containers, especially for carbonated beverages. Recycled PET is used as fiberfill and in cast resins, such as boat hulls and shower units. | ||
| − | + | [[[SliderGallery rightalign|aaiPET.jpg~FTIR]]] | |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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Examples: Dacron® [DuPont]; Fortrel®; Mylar® [DuPont]; Melinex® [DuPont]; Terylene [ICI]; Ertalyte® [Quadrant]; Eastar® {Eastman]; Impet® [Ticona]; Terphane® [Terphane]; Crimplene; Diolen; Grilene; Tergal [Tergal Industries];Terital; Tetoron; Trevira® [Trevira ex Höchst] | Examples: Dacron® [DuPont]; Fortrel®; Mylar® [DuPont]; Melinex® [DuPont]; Terylene [ICI]; Ertalyte® [Quadrant]; Eastar® {Eastman]; Impet® [Ticona]; Terphane® [Terphane]; Crimplene; Diolen; Grilene; Tergal [Tergal Industries];Terital; Tetoron; Trevira® [Trevira ex Höchst] | ||
| − | + | == Risks == | |
| − | == | + | * Difficult to ignite. |
| + | * Burns with a shiny, yellow-orange, sooty flame. | ||
| + | * Self-extinguishing | ||
| + | * AM Polymer: [http://ampolymer.com/SDS/PolyethyleneTerephthalateSDS.html SDS} | ||
| + | ==Physical and Chemical Properties== | ||
Resistant to cold acids, weak alkalis, bleach and most organic solvents. Degrades in strong alkalis, strong hot acids, cresol. Tenacity = 2.8-5.2; Elongation = 19-30%; Moisture regain = 0.4% | Resistant to cold acids, weak alkalis, bleach and most organic solvents. Degrades in strong alkalis, strong hot acids, cresol. Tenacity = 2.8-5.2; Elongation = 19-30%; Moisture regain = 0.4% | ||
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|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 1.36-1.41 | + | | 1.36-1.41 g/ml |
|- | |- | ||
! scope="row"| Refractive Index | ! scope="row"| Refractive Index | ||
| 1.54, 1.72 | | 1.54, 1.72 | ||
|} | |} | ||
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| − | |||
| − | |||
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== Comparisons == | == Comparisons == | ||
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[[media:download_file_365.pdf|General Characteristics of Polymers]] | [[media:download_file_365.pdf|General Characteristics of Polymers]] | ||
| − | + | ==Resources and Citations== | |
| − | |||
| − | == | ||
* Pam Hatchfield, ''Pollutants in the Museum Environment'', Archetype Press, London, 2002 | * Pam Hatchfield, ''Pollutants in the Museum Environment'', Archetype Press, London, 2002 | ||
Revision as of 13:54, 4 August 2022
Description
A type of polyester made by condensing Ethylene glycol and Terephthalic acid. In 1951, polyethylene terephthalate (PET) became the first commercially marketed polyester. It was sold as Dacron® in the U.S. and as Terylene in Great Britain. PET is extremely durable and dimensionally stable. It is resistant to abrasion, chemicals. PET is used to make Mylar® and other strong moisture-resistant films used in packaging, photographs, x-rays and audio/visual tapes. Since 1977, PET has been widely used in food containers, especially for carbonated beverages. Recycled PET is used as fiberfill and in cast resins, such as boat hulls and shower units.
Synonyms and Related Terms
PET; polyester; tereftalato de polietilenglicol (Esp.); poli (tereftalato de etieno) (Esp.); polyéthylène terephthalate (Fr.); polietilene tereftalato (It.); tereftalato de polietileno (Port.); polyethylene glycol terephthalate
Examples: Dacron® [DuPont]; Fortrel®; Mylar® [DuPont]; Melinex® [DuPont]; Terylene [ICI]; Ertalyte® [Quadrant]; Eastar® {Eastman]; Impet® [Ticona]; Terphane® [Terphane]; Crimplene; Diolen; Grilene; Tergal [Tergal Industries];Terital; Tetoron; Trevira® [Trevira ex Höchst]
Risks
- Difficult to ignite.
- Burns with a shiny, yellow-orange, sooty flame.
- Self-extinguishing
- AM Polymer: [http://ampolymer.com/SDS/PolyethyleneTerephthalateSDS.html SDS}
Physical and Chemical Properties
Resistant to cold acids, weak alkalis, bleach and most organic solvents. Degrades in strong alkalis, strong hot acids, cresol. Tenacity = 2.8-5.2; Elongation = 19-30%; Moisture regain = 0.4%
| Melting Point | 250-260 |
|---|---|
| Density | 1.36-1.41 g/ml |
| Refractive Index | 1.54, 1.72 |
Comparisons
Physical Properties for Selected Thermoplastic Resins
General Characteristics of Polymers
Resources and Citations
- Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
- Marjory L. Joseph, Introductory Textile Science, Holt, Rinehart and Winston, Fort Worth, TX, 1986
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- Identification of Textile Materials, The Textile Institute, Manchester, England, 1985
- Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988