Effect of a low-pressure plasma treatment on water vapor diffusivity and permeability of poly(ethylene-co-vinyl alcohol) and polyethylene films

Marais, Stéphane; Hirata, Yuichi; Cabot, C.; Morin-Grognet, Sandrine; Garda, Marie-Rose; Atmani, H.; Poncin-Epaillard, Fabienne

doi:10.1016/j.surfcoat.2005.12.049

Cited by 29 publications

(22 citation statements)

References 30 publications

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“…This increase may be due to the observed changes in morphology (increase in roughness) as opposed to an increase in the hydrophobicity of the film surface. In related studies (Marais and others ; Vandencasteele and others ; Carbone and others ), treatments with a microwave‐induced, low‐pressure tetrafluoromethane plasma and an RF‐induced low‐pressure O 2 ‐plasma increased the water contact angles of poly(ethylene‐co‐vinyl alcohol) and polyethylene films and polytetrafluoroethylene films, respectively. The researchers suggested that the observed increases in contact angle were resulted from increases in average surface roughness due to CPT‐induced etching (Vandencasteele and others ; Carbone and others ).…”

Section: Resultsmentioning

confidence: 89%

Cold Oxygen Plasma Treatments for the Improvement of the Physicochemical and Biodegradable Properties of Polylactic Acid Films for Food Packaging

Song

Roh

et al. 2015

Journal of Food Science

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The effects of cold plasma (CP) treatment on the physicochemical and biodegradable properties of polylactic acid (PLA) films were studied. The PLA films were exposed to CP for 40 min at 900 W and 667 Pa using oxygen as the plasma-forming gas. The tensile, optical, and dynamic mechanical thermal properties, surface morphology, printability, water contact angle, chemical structure, weight change, and biodegradability properties of the films were evaluated during storage for up to 56 d. The tensile and optical properties of the PLA films were not significantly affected by CP treatment (CPT; P > 0.05). The surface roughness and water contact angle of PLA films increased by CPT and further increased during storage for 56 d. The printability of the PLA films increased following CPT and remained stable throughout the storage period. CP-induced hydrophilicity was also sustained during the storage period. The PLA films lost 1.9% of their weight after CPT, but recovered 99.5% of this loss after 14 d in storage. Photodegradation, thermal, and microbial biodegradable properties of the films were significantly improved by CPT (P < 0.05). Accelerated biodegradation of CP-treated PLA sachets with and without cheese was observed in compost. These results demonstrate the potential of CPT for modifying the stiffness, water contact angle, and chemical structure of PLA films and improving the printability and biodegradability of the films for food packaging.

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Section: Resultsmentioning

confidence: 89%

Cold Oxygen Plasma Treatments for the Improvement of the Physicochemical and Biodegradable Properties of Polylactic Acid Films for Food Packaging

Song

Roh

et al. 2015

Journal of Food Science

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“…2. EFG prepared by the combined process of microwave irradiation and ultrasonication showed extremely weak peaks at 3,300, 1,240, and 870 cm 21 , which indicate hydroxyl group, CAOH and epoxy groups, respectively [11,22]. This indicates that the characteristic functional groups disappeared with the microwave irradiation treatment and EFG is relatively hydrophobic [10,11].…”

Section: Characterization Of the Nanocomposite Filmsmentioning

confidence: 97%

Thermal and barrier properties of EVOH/EFG nanocomposite films for packaging applications: Effect of the mixing method

2014

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Ethylene-vinyl alcohol copolymer (EVOH)/exfoliated graphite (EFG) nanocomposite films were prepared by precoating EFG on the EVOH surface and conducting a successive melt-extrusion process. Their physical properties were strongly dependent on the EFG content and the mixing method, which strongly affected the morphology and surface properties of the nanocomposite films. The hydrophobicity and water resistance property of EVOH increased by incorporating hydrophobic EFG and their effects were more pronounced in the precoating method, which is related to good dispersion of EFG in EVOH and an enhanced crystalline structure. The incorporation of EFG into EVOH by the precoating method more effectively diminished the dependence of the relative humidity on the oxygen transmission rate of pure EVOH and increased the oxygen barrier properties of EVOH at a high relative humidity. The incorporation of EFG into EVOH by the precoating method also induced relatively more enhanced thermal stability. These results suggest the feasibility of the application of moisture-sensitive EVOH resin for food packaging films. POLYM. COMPOS., 37:1744-1753

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“…The contact angle measurements for each treatment were repeated several times to obtain a maximum deviation of 2°. The surface energy components were calculated using Owens method [23].…”

Section: Cmc Surface Tension and Surface Free Energy Measurementsmentioning

confidence: 99%

Comparison of a Cationic Gemini Surfactant and the Corresponding Monomeric Surfactant for Corrosion Protection of Mild Steel in Hydrochloric Acid

Mahdavian

Tehrani‐Bagha

Holmberg

2011

J Surfact & Detergents

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A cationic gemini surfactant, N,N 0 -didodecyl-N,N,N 0 ,N 0 -tetramethyl-1,4-butanediammonium dibromide (12-4-12) and the corresponding monomeric surfactant dodecyltrimethylammonium bromide were compared with respect to corrosion inhibition efficiency in 1 M hydrochloric acid solution. Polarization and electrochemical impedance spectroscopy were used to evaluate corrosion inhibition. The 12-4-12 surfactant showed an extremely high corrosion inhibition efficiency at very low concentration. Surface tension measurements performed under the strongly acidic conditions revealed that the gemini surfactant is remarkably electrolyte tolerant, which is beneficial for adsorption at the steel surface.

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Effect of a low-pressure plasma treatment on water vapor diffusivity and permeability of poly(ethylene-co-vinyl alcohol) and polyethylene films

Cited by 29 publications

References 30 publications

Cold Oxygen Plasma Treatments for the Improvement of the Physicochemical and Biodegradable Properties of Polylactic Acid Films for Food Packaging

Cold Oxygen Plasma Treatments for the Improvement of the Physicochemical and Biodegradable Properties of Polylactic Acid Films for Food Packaging

Thermal and barrier properties of EVOH/EFG nanocomposite films for packaging applications: Effect of the mixing method

Comparison of a Cationic Gemini Surfactant and the Corresponding Monomeric Surfactant for Corrosion Protection of Mild Steel in Hydrochloric Acid

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