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Nitrogen analysis uptake rates

The adsorption kinetics of oxygen and nitrogen on CMS were studied using different experimental methods volumetric, gravimetric, chromatographic, thermal desorption, and isotope exchange [11]. From the analysis of the literature it follows that the transport process controlling the uptake rate seem to obey to two different mechanisms, either a surface barrier at the micropore entrances, or a diffusional molecular transport within the bulk of the micropores. [Pg.351]

Thermal analysis, moisture uptake and dynamic mechanical analysis was also accomplished on cured specimens. Thermal analysis parameters used to study cured specimens are the same as those described earlier to test resins. The moisture uptake in cured specimens was monitored by immersing dogbone shaped specimens in 71 C distilled water until no further weight gain is observed. A dynamic mechanical scan of a torsion bar of cured resin was obtained using the Rheometrics spectrometer with a temperature scan rate of 2°C/minute in nitrogen at a frequency of 1.6Hz. The following sections describe the results obtained from tests run on the two different BCB resin systems. Unless otherwise noted all tests have been run as specified above. [Pg.369]


See other pages where Nitrogen analysis uptake rates is mentioned: [Pg.226]    [Pg.124]    [Pg.580]    [Pg.1091]    [Pg.154]    [Pg.15]    [Pg.331]    [Pg.214]    [Pg.116]    [Pg.494]    [Pg.494]    [Pg.266]    [Pg.1370]    [Pg.1597]    [Pg.201]    [Pg.105]    [Pg.349]    [Pg.608]    [Pg.283]    [Pg.651]    [Pg.11]    [Pg.175]   


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