Difference between revisions of "Polyethylene terephthalate"

Latest revision as of 12:26, 23 September 2023

Description

A type of polyester made by condensing Ethylene glycol and Terephthalic acid. In 1941, polyethylene terephthalate (PET) was patented in England. In 1951, the trademark Mylar® became the first commercially marketed polyester film. Polyester fabric was sold as Dacron® in the U.S. and as Terylene in Great Britain. PET is a semicrystalline, thermoplastic polymer that is extremely durable and dimensionally stable. It is resistant to abrasion and chemicals. PET is used to make 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

FTIR

PET; PETE; 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]

Applications

Textiles (polyester)
Rigid packaging (bottles, recyclable type 1)
Films (Mylar)
Waterproofing barriers

Risks

Difficult to ignite; self-extinguishing
Burns with a shiny, yellow-orange, sooty flame.
Low impact strength.
Easily degrades in UV light.
AM Polymer: [http://ampolymer.com/SDS/PolyethyleneTerephthalateSDS.html SDS}

Physical and Chemical Properties

Colorless, semi-crystalline resin
Strong and impact-resistant
Resistant to cold acids, weak alkalis, bleach and most organic solvents.
Degrades in strong alkalis, strong hot acids, cresol.
Permeable to oxygen and carbon dioxide
Melting Point = 250-260
Density = 1.36-1.41 g/ml
Refractive Index = 1.54, 1.72
Tenacity = 2.8-5.2
Elongation = 19-30%
Moisture regain = 0.4%

Comparisons

Physical Properties for Selected Thermoplastic Resins

General Characteristics of Polymers

Resources and Citations

Omnexus: Guide on PET
Wikipedia: Polyethylene terephthalate
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

@@ Line 1: / Line 1: @@
 == Description ==
-A type of [http://cameo.mfa.org/materials/fullrecord.asp?name=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 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.
+A type of [[polyester resin|polyester]] made by condensing [[ethylene glycol]] and [[terephthalic acid]]. In 1941, polyethylene terephthalate (PET) was patented in England. In 1951, the trademark [[Mylar|Mylar®]] became the first commercially marketed polyester film. Polyester fabric was sold as [[Dacron|Dacron®]] in the U.S. and as Terylene in Great Britain. PET is a semicrystalline, thermoplastic polymer that is extremely durable and dimensionally stable. It is resistant to abrasion and chemicals. PET is used to make 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.); polythylne 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 Hchst]
 [[[SliderGallery rightalign|aaiPET.jpg~FTIR]]]
+PET; PETE; polyester; tereftalato de polietilenglicol (Esp.); poli (tereftalato de etieno) (Esp.); polyéthylène terephthalate (Fr.); polietilene tereftalato (It.); tereftalato de polietileno (Port.); polyethylene glycol terephthalate
-== Other Properties ==
+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]
-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%
+==Applications==
+* Textiles (polyester)
+* Rigid packaging (bottles, recyclable type 1)
+* Films (Mylar)
+* Waterproofing barriers
-{| class="wikitable"
+== Risks ==
-|-
-! scope="row"| Melting Point
-| 250-260
-|-
-! scope="row"| Density
-| 1.36-1.41
-|-
-! scope="row"| Refractive Index
-| 1.54, 1.72
-|}
-== Hazards and Safety ==
+* Difficult to ignite; self-extinguishing
+* Burns with a shiny, yellow-orange, sooty flame.
+* Low impact strength.
+* Easily degrades in UV light.
+* AM Polymer: [http://ampolymer.com/SDS/PolyethyleneTerephthalateSDS.html SDS}
-Difficult to ignite.  Burns with a shiny, yellow-orange, sooty flame.  Self-extinguishing
+==Physical and Chemical Properties==
+* Colorless, semi-crystalline resin
+* Strong and impact-resistant
+* Resistant to cold acids, weak alkalis, bleach and most organic solvents.
+* Degrades in strong alkalis, strong hot acids, cresol.
+* Permeable to oxygen and carbon dioxide
+* Melting Point = 250-260
+* Density = 1.36-1.41 g/ml
+* Refractive Index = 1.54, 1.72
+* Tenacity = 2.8-5.2
+* Elongation = 19-30%
+* Moisture regain = 0.4%
 == Comparisons ==
@@ Line 37: / Line 42: @@
 [[media:download_file_365.pdf|General Characteristics of Polymers]]
+==Resources and Citations==
+* Omnexus: [https://omnexus.specialchem.com/selection-guide/polyethylene-terephthalate-pet-plastic Guide on PET]
-== Authority ==
+* Wikipedia: [https://en.wikipedia.org/wiki/Polyethylene_terephthalate Polyethylene terephthalate]
+* Pam Hatchfield, ''Pollutants in the Museum Environment'', Archetype Press, London, 2002
-* Pam Hatchfield, 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
-* Marjory L. Joseph, 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
-* Theodore J. Reinhart, Theodore J. Reinhart, 'Glossary of Terms', ''Engineered Plastics'', ASM International, 1988
 [[Category:Materials database]]