TY - JOUR
T1 - Pulsed electrical discharges in silicone emulsion
AU - Miron, Camelia
AU - Balan, Mihaela
AU - Pricop, Lucia
AU - Harabagiu, Valeria
AU - Jepu, Ionut
AU - Porosnicu, Corneliu
AU - Lungu, Cristian Petrica
PY - 2014/3
Y1 - 2014/3
N2 - Pulsed electrical discharges were initiated between two tungsten electrodes immersed in silicone emulsion. Optical emission spectra have shown the formation of carbon and oxygen molecules and radicals. A broad emission continuum dominated the spectrum with the increase of the discharge time due to a transition to arc plasma. Two well-distinguished and stable phases of different density were formed after the plasma treatment of the emulsion. Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), nuclear magnetic resonance spectroscopy (1H NMR) and surface tension measurements have shown that a demulsification of the silicone emulsion was achieved using this method. Pulsed electrical discharges were initiated in silicone emulsion between tungsten electrodes arranged in a rod-to-rod configuration. The reactive species formed in the discharge determined the separation of the emulsion into two phases of different density. These phases did not emulsify again to regenerate the initial emulsion.
AB - Pulsed electrical discharges were initiated between two tungsten electrodes immersed in silicone emulsion. Optical emission spectra have shown the formation of carbon and oxygen molecules and radicals. A broad emission continuum dominated the spectrum with the increase of the discharge time due to a transition to arc plasma. Two well-distinguished and stable phases of different density were formed after the plasma treatment of the emulsion. Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), nuclear magnetic resonance spectroscopy (1H NMR) and surface tension measurements have shown that a demulsification of the silicone emulsion was achieved using this method. Pulsed electrical discharges were initiated in silicone emulsion between tungsten electrodes arranged in a rod-to-rod configuration. The reactive species formed in the discharge determined the separation of the emulsion into two phases of different density. These phases did not emulsify again to regenerate the initial emulsion.
KW - plasma treatment
KW - polymer modification
KW - pulsed discharges
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U2 - 10.1002/ppap.201300048
DO - 10.1002/ppap.201300048
M3 - Article
AN - SCOPUS:84896495195
SN - 1612-8850
VL - 11
SP - 214
EP - 221
JO - Plasma Processes and Polymers
JF - Plasma Processes and Polymers
IS - 3
ER -