N‐isopropylacrylamide decomposition process in helium plasma

Abstract

Emission spectroscopy was applied to observe decomposed species of N-isopropylacrylamide (NIPAAm) exposed to He plasma, which was generated by AC discharge at the pressure of 400 Pa. As the NIPAAm monomer was exposed to He plasma, light emitted from the NIPAAm and plasma was monitored. In the diagnosis measurement, several emission peaks assigned to the H a and H b atomic lines, CH 3 O, CN(B 2 S-X 2 P), CH(A 2 D-X 2 P), and C 3 H 5 , CN, CHO, CH 2 O, and C 4 H 2 þ transitions were observed and measured at various discharge times. The present results show the presence of C 4 H 2 and C 4 H 2 þ *, which are not manifested in great concentration in the simulation of RF acetylene discharge. The time dependence of the emission intensities was also investigated. When the discharge time of He plasma was increased, the emission intensities of the observed transitions also increased and then gradually decreased.

Optical emission spectroscopy of CO2 glow discharge at low pressure

“…The emission bands and lines were measured using a monochromator in the wavelength range of 200 to 900 nm. The species observed were C 2 (A 3 Π g -X '3 Π u ) at 435.7nm and (C' 2 Experimental setup DC glow discharge plasma in CO 2 gas was generated in a plasma apparatus of the Laboratorio de Física Avanzada, Facultad de Ciencias, UAEM, which is shown in Figure 1 [9,10]. The reactor consisted of two copper circular plane electrodes, 3 mm thick and 30 mm in diameter.…”

Measurements of electron temperature and ion density in an ac pulsed CO plasma study

“…The experimental apparatus and technique to generate the pulsed plasma was recently reported [7,8]. A brief description is reported here.…”

Using Plasma Etching to Access the Polymer Density Distribution and Diffusivity of Gel Particles

“…Oxygen produces functional groups on the polymer with the formation of low-molecular-weight products. Excited CN, CH, HCHO, CH 3 O, C 3 H 5 , C 4 H 2 + and CHO play a dominant role in the pNIPAM decomposition [ 26 ]. An Atomflo 250 system (Surfx™ Technologies LLC) generated the atmospheric plasma.…”