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The effect of phenol and biphenyl on the properties of poly(ethylene terephthalate) film

✍ Scribed by W. Ingamells; K. V. Narasimham

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
552 KB
Volume
20
Category
Article
ISSN
0021-8995

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✦ Synopsis

Evidence is presented which justifies the use of the dyeing transition temperature (To) instead of the glass transition temperature (T,) as a reference temperature when using the WLF equation to describe the carrier dyeing of polyester film. Changes in the properties of the substrate caused by the effect of "carriers" on the molecular structure of the polymer have also been detected and a connection between the location of TD and chain folding is suggested from IR measurements.

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## Abstract The aim of this work was to study the variations in the oxygen diffusion, solubility, and permeability coefficients of polylactide (PLA) films at different temperatures (5, 23, and 40Β°C) and water activities (0–0.9). The results were compared with the oxygen diffusion, solubility, and p