some practical aspects of plasma surface treatment and plasma induced grafting of polymers

the experimental results suggest that the effect of plasma on polymers in a field of research not only very interesting but also very useful. a prospective application in the finishing of textile fabrics was found and the use of plasma for a temporary change of the surface properties of polymers during their technological processing seem ..

influence of high-frequency plasma on polymers

studies the influence of plasma treatment on polymer surfaces the principal experimental method used has been esr, since created free radicals may be indentified by this method. the polypropylene (pp) amoco, polyethylene (pe) lupolen and unifos films and polyester fibers were examined

interfacial aspects of polymer coatings by electropolymerization

polymer coatings were produced on graphite fiber electrodes by electroninitiated polymerization in an electrolytic cell containing monomers. the adhesion of the coated graphite fibers to an epoxy matrix has been measured by single fiber pull-out tests. the measured values of the pull-out force, and scanning electron micrographs of pulled-..

the influence of sulfur on interfacial reaction kinetics in the decarburization of liquid iron by carbon dioxide

the kinetics of decarburization of continuously carbon-saturated liquid iron by co/sub 2/ have been studied between 1280 and 1600 degreesc at sulfur concentrations between 0.01 and 1 wt. pct. the results are consistent with a surface blockage mechanism by chemisorbed sulfur which shows an essentially ideal adsorption isotherm. the adsorpt..

kinetics and analysis during acid leaching of phase-separated borosilicate glass

macedo et al. (1976) have reported a method for producing optical waveguide fibers with minimum signal loss by a relatively inexpensive commercial process, of which an integral part is the removal of ionic impurities (especially fe/sup 2+/) and transition metal ions so that signal loss by extrinsic absorption may be reduced. since the lit..

evaluation of metal mirrors for high power applications by multithreshold damage analysis

development of damage-resistant mirrors for high power, pulsed infrared laser applications depends on accurate identification of dominant failure modes and their origin. previous work indicates that metal surfaces are usually subject to plastic deformation, pitting, or other effects which may degrade reflective properties long before lase..

effect of surface treatment of carbon fibers on the strength properties of carbon fiber plastics

investigates the effect of a film of silicon carbide deposited from the gas phase onto the carbon fiber on the strength properties of both carbon fiber plastics (in shear, bending, extension, and compression), and also of the carbon fiber with coating itself. the distribution of the coating over the surface of the elementary carbon fibers..

actual and potential industrial utilisation of plasmas' synthesis, powder treatment, metallurgical treatments and surface treatments

gives a brief historical description of the evolution of the uses of plasma during the last 20 years and describes briefly different types of plasma. the author presents the problems that occur for the chemical reactions under plasma conditions, e.g mixing of the reactants, quenching. the surface treatments in plasma are then treated' car..

selected methods of cleanness evaluation of electronic components

describes two methods of quantitative evaluation of surface contaminants left after cleaning process. the first method relates to the estimation of wettability by contact angle measurement (with contact angle goniometer), the other is based on the measurement of frequency change of quartz probe due to various surface contaminants. for bot..

effect of hydrolysis and drying on the siloxane bonds of a silane coupling agent deposited on e-glass fibers

molecular structural changes in a vinyl functional silane coupling agent on e-glass fibers, induced during the immersion test in hot water, have been studied using fourier transform infrared (ft-ir) spectroscopy. the amount of the coupling agent on the glass fibers is reduced by hydrolytic degradation. silanol groups formed by the hydroly..