@article{mccord_hwang_hauser_qiu_cuomo_hankins_bourham_canup_2002, title={Modifying nylon and polypropylene fabrics with atmospheric pressure plasmas}, volume={72}, ISSN={["0040-5175"]}, DOI={10.1177/004051750207200605}, abstractNote={ Polypropylene and nylon 66 fabrics are subjected to atmospheric pressure He and He-O2 plasmas for selected exposure time intervals. Scanning electron microscopy anal ysis of the fabrics shows no apparent changes in the plasma-treated nylon fiber surfaces, but significant surface morphological changes for the polypropylene. Surface analyses of the nylon filaments reveal small differences in the surface carbon and oxygen contents between the treated and control groups. The surface oxygen and nitrogen content of the polypropylene fabric increases significantly after treatment in both He and He-O2 plasmas. There is a slight decrease in nylon fabric tensile strength after treatment in He plasma for 3 minutes, while. there is no significant change in tensile strength of the nylon fabric treated with He-O2 after exposure times of up to 8 minutes. }, number={6}, journal={TEXTILE RESEARCH JOURNAL}, author={McCord, MG and Hwang, YJ and Hauser, PJ and Qiu, Y and Cuomo, JJ and Hankins, OE and Bourham, MA and Canup, LK}, year={2002}, month={Jun}, pages={491–498} }
 @article{hankins_bourham_mann_1997, title={Observations of visible light emission from interactions between an electrothermal plasma and a propellant}, volume={33}, ISSN={["0018-9464"]}, DOI={10.1109/20.559972}, abstractNote={A set of experiments has been conducted on the experimental plasma-propellant interaction facility PIPE to measure the burn rates of JA2 solid propellant as a function of plasma impingement angle with respect to the propellant surface. The propellant test stand is designed such that the angle of plasma impact on the propellant surface can be varied 0 to 90 degrees. Optical emission spectroscopy measurements were taken during these shots. Fiber optics were situated in two places, one closer to the plasma source and the second at the propellant's rear edge near the point of impact of plasma and propellant. The fiber optics are connected to an optical multichannel analyzer set to observe neutral copper lines and molecular C/sub 2/ Swan Bands in the 505-585 nm spectral region. Time-averaged core are temperatures of 8,800 to 14,000 K and plasma densities of 2/spl times/10/sup 25/ to 4.5/spl times/10/sup 23/ m/sup -3/ have been deduced by measurements along the axis of the device using the relative intensities and the Stark broadening of the copper lines. As the angle of plasma impact with the propellant surface increases from D to 90/spl deg/, the overall radiant emission increases, falls and increases. However, the measured plasma temperature decreases gradually and plasma density falls by nearly a factor of two before increasing substantially at 90/spl deg/. Comparisons with the measured burn rates of the JA2 propellant versus inclination angles suggests a stronger correlation of plasma burn rate with plasma kinetic energy than with the radiative heat flux.}, number={1}, journal={IEEE TRANSACTIONS ON MAGNETICS}, author={Hankins, OE and Bourham, M and Mann, D}, year={1997}, month={Jan}, pages={295–298} }