## 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 (0β0.9). The results were compared with the oxygen diffusion, solubility, and p
Oxygen Barrier Properties of Poly(ethylene terephthalate) Nanocomposite Films
β Scribed by Masoud Frounchi; Alireza Dourbash
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 804 KB
- Volume
- 294
- Category
- Article
- ISSN
- 1438-7492
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β¦ Synopsis
Abstract
Nanocomposites of poly(ethylene terephthalate) and two different montmorilloniteβbased organoclays were prepared by a coβrotating twin screw extruder. Dispersion of nanoclays in the polymer matrix was examined by TEM and XRD. Nanocomposites with lower content of organoclay showed exfoliated morphology while by increasing the amount of organoclay the intercalated morphology was more prevalent. Both organoclays had a good intercalation with PET and were uniformly dispersed within the polymer. Oxygen permeability of thin films of nanocomposites showed that the nanocomposites had better oxygen barrier properties than the neat PET. Tensile and impact properties of the nanocomposites also were measured.
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π SIMILAR VOLUMES
The improvement in oxygen barrier properties of poly(ethylene terephthalate) (PET) by incorporation of an impermeable phase such as crystallinity or talc platelets was examined. Crystallinity was induced by crystallization from the glassy state (cold crystallization). Microlayering was used to creat