Plasma modification of polylactic acid in a medium pressure DBD

Polylactic acid surface activation by atmospheric pressure dielectric barrier discharge plasma

“…These can lead to radical formation, cross-linking and double bond formation [9] as well as new polar groups. We attribute the C-C/C-H relative decrease to formation of a C-O bond at the CH 3 side group.…”

“…Plasma treatment can avoid wet chemical treatment and consequent degradation. Nonthermal plasma treatment at low or medium pressure is usually used [6][7][8][9] at a gas temperature less than the 200°C PLA decomposition temperature.…”

The use of DBD plasma treatment and polymerization for the enhancement of biomedical UHMWPE

“…The high voltage applied to the upper copper electrode is measured using a 1000:1 high voltage probe (Tektronix P6015A), whereas for the monitoring of the discharge current, the voltage is measured across a 50 Ω resistor, connected in series with the discharge reactor to the ground. The obtained waveforms are recorded using a digital oscilloscope (Picoscope 3204A) and are visualized and analysed using the included software (Picoscope 6) [11]. Fig.…”

“…[5,6] In the past, extensive research, using plasma activation, has been successfully done on the improvement of the wettability of polymer surfaces. [7][8][9][10][11][12][13][14] Functional groups, such as hydroxyls and alkanoates, are introduced onto the surface, making it more polar and less inert.…”

Investigación sobre la mejora de la humectabilidad de films poliméricos de polietileno de baja densidad (LDPE) mediante plasma por descarga corona. Optimización de laminados con espumas de polietileno mediante procesos de laminación con adhesivos Hot-Melt para aplicaciones técnicas en el sector de automoción

“…(De Geyter, Morent et al 2010) No obstante, puesto que no se pierde toda la mejora inducida, a parte de perder con el tiempo especies activas sobre la superficie, actuarán mecanismos de interacción mecánica (abrasión o arranque de material) más estables con el tiempo, relacionados con la componente no-polar de la energía superficial. ), en función del tiempo de envejecimiento al aire, Figura IV.…”