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Influence of discharge atmosphere on the ageing behaviour of plasma-treated polylactic acid

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Abstract
The effect of a plasma treatment on polymers is not permanent, since the treated surfaces tend to recover to the untreated state (ageing process). This paper investigates the influence of discharge atmosphere on the ageing behaviour of plasma-treated PLA foils: these foils are plasma-treated with a DBD in 4 different atmospheres (air, nitrogen, argon and helium) and are subsequently stored in air. Results of contact angle and XPS measurements show that the discharge gas has a significant influence on the ageing behaviour of the PLA foils. This influence can be explained by the different cross-linking degree of the plasma-treated surfaces: helium and argon plasma-treated PLA films have a high cross-linking degree, which limits polymer chain mobility and as a result reduces the ageing process. In contrast, the ageing behaviour of air and nitrogen plasma-treated films is more pronounced due to their low cross-linking degree.
Keywords
Ageing, Polylactic acid (PLA), Dielectric barrier discharge, Contact angle, X-ray photoelectron spectroscopy, DIELECTRIC BARRIER DISCHARGE, PRESSURE GLOW-DISCHARGE, L-LACTIC ACID, SURFACE MODIFICATION, POLY(L-LACTIC ACID), POLYMER-FILMS, GRAFT-POLYMERIZATION, PART II, HELIUM, AIR

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Chicago
Morent, Rino, Nathalie De Geyter, Martine Trentesaux, Léon Gengembre, Peter Dubruel, Christophe Leys, and Edmond Payen. 2010. “Influence of Discharge Atmosphere on the Ageing Behaviour of Plasma-treated Polylactic Acid.” Plasma Chemistry and Plasma Processing 30 (4): 525–536.
APA
Morent, R., De Geyter, N., Trentesaux, M., Gengembre, L., Dubruel, P., Leys, C., & Payen, E. (2010). Influence of discharge atmosphere on the ageing behaviour of plasma-treated polylactic acid. PLASMA CHEMISTRY AND PLASMA PROCESSING, 30(4), 525–536.
Vancouver
1.
Morent R, De Geyter N, Trentesaux M, Gengembre L, Dubruel P, Leys C, et al. Influence of discharge atmosphere on the ageing behaviour of plasma-treated polylactic acid. PLASMA CHEMISTRY AND PLASMA PROCESSING. 2010;30(4):525–36.
MLA
Morent, Rino et al. “Influence of Discharge Atmosphere on the Ageing Behaviour of Plasma-treated Polylactic Acid.” PLASMA CHEMISTRY AND PLASMA PROCESSING 30.4 (2010): 525–536. Print.
@article{1268926,
  abstract     = {The effect of a plasma treatment on polymers is not permanent, since the treated surfaces tend to recover to the untreated state (ageing process). This paper investigates the influence of discharge atmosphere on the ageing behaviour of plasma-treated PLA foils: these foils are plasma-treated with a DBD in 4 different atmospheres (air, nitrogen, argon and helium) and are subsequently stored in air. Results of contact angle and XPS measurements show that the discharge gas has a significant influence on the ageing behaviour of the PLA foils. This influence can be explained by the different cross-linking degree of the plasma-treated surfaces: helium and argon plasma-treated PLA films have a high cross-linking degree, which limits polymer chain mobility and as a result reduces the ageing process. In contrast, the ageing behaviour of air and nitrogen plasma-treated films is more pronounced due to their low cross-linking degree.},
  author       = {Morent, Rino and De Geyter, Nathalie and Trentesaux, Martine and Gengembre, Léon and Dubruel, Peter and Leys, Christophe and Payen, Edmond},
  issn         = {0272-4324},
  journal      = {PLASMA CHEMISTRY AND PLASMA PROCESSING},
  keywords     = {Ageing,Polylactic acid (PLA),Dielectric barrier discharge,Contact angle,X-ray photoelectron spectroscopy,DIELECTRIC BARRIER DISCHARGE,PRESSURE GLOW-DISCHARGE,L-LACTIC ACID,SURFACE MODIFICATION,POLY(L-LACTIC ACID),POLYMER-FILMS,GRAFT-POLYMERIZATION,PART II,HELIUM,AIR},
  language     = {eng},
  number       = {4},
  pages        = {525--536},
  title        = {Influence of discharge atmosphere on the ageing behaviour of plasma-treated polylactic acid},
  url          = {http://dx.doi.org/10.1007/s11090-010-9233-8},
  volume       = {30},
  year         = {2010},
}

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