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CROW - Polymer Science

Posted: Tuesday Jan 19, 2021

PET Films - polymerdatabase.com

Posted: (2 days ago) PET film is often an excellent choice for more demanding applications in food and nonfood-film applications. Major uses include microwave, and medical packaging, plastic wrap, tape backing, printed films, plastic cards, protective coatings such as solar and safety window films, release films, transformer insulation films and flexible printed ...

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PET Suppliers - polymerdatabase.com

Posted: (2 days ago) Polyethylene Terephthalate (PET) Properties and Applications. Polyethylene terephthalate (PET) is the most important commercial polyester. 1 It is a transparent, amorphous thermoplastic when solidified by rapid cooling or a semi-crystalline plastic when cooled slowly or when cold-drawn. 2 PET is produced by polycondensation of ethylene glycol and terephthalic acid.

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Unfilled Polyethylene Terephthalate (PET)

Posted: (2 days ago) Thermophysical Properties of Unfilled Polyethylene Terephthalate (PET) PROPERTY: UNIT: VALUE / RANGE : Melting Point °C: 255: Density : g mL-1: 1.35 - 1.40: Coefficient of Thermal Expansion x 10-5: cm / (cm °C)

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Poly(ethylene terephthalate) - polymerdatabase.com

Posted: (2 days ago) PROPERTY: UNIT: VALUE / RANGE: PREFERRED: Molar Volume V m: mL mol-1: 143.9 - 144.5: 144: Density ρ: g mL-1: 1.33 - 1.48: 1.34: Solubility Parameter δ: MPa 1/2: 17 ...

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Polyesters - polymerdatabase.com

Posted: (7 days ago) The largest volume polyesters (PET, PBT, PEN) are produced by direct esterification of a dicarboxylic acid with a diol or by transesterification of a dialkyl esters. If both moieties are difunctional, the condensation product is a linear polymer, and if at least one of the moieties is tri- or tetra-functional, the resulting polymer is a ...

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Plastic Films - polymerdatabase.com

Posted: (2 days ago) PET (BOPET) Polyester film is a high-performance, crystal clear thermoplastic made from polyethylene terephthalate (PET). In comparison with other common plastic films, PET film has high tensile strength, excellent dimensional stability, low moisture absorption, and good retention of physical properties over a fairly wide temperature range.

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Polyester Fibers - polymerdatabase.com

Posted: (6 days ago) Polyester Fibers Properties. The first manmade polyester fiber was developed by DuPont in 1946 and was sold under the tradename Terylene. The majority of todays polyester fibers are composed of terepthalic acid and ethylene glycol (PET).

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Prediction of Glass Transition Temperature

Posted: (2 days ago) Prediction of Glass Transition Temperature. Several scientists have proposed quantitative structure–property relationships to predict the glass transition temperature of polymers from their chemical structure. 1-6 These methods work well for linear polymers in the absence of bulky side groups, whereas for polymers with large side groups the predictions are often unreliable.

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EVOH Film - polymerdatabase.com

Posted: (2 days ago) However, EVOH loses its good gas barrier properties when exposed to moisture. For this reason and to optimize both cost and performance, it is frequently used in multilayer, co-extruded films like HDPE, PP, and PET, which have superior moisture barrier properties. EVOH films are usually not or only slowly biodegradable.

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