An Investigation of Microstructural Characteristics of Contact-lens PolymersNational Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1990 - Contact lenses - 8 pages |
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Common terms and phrases
Abe Eftekhari Aeronautics and Space ASTM chemical structure inhibits cm³ polymer atm cm³ STP CO2 gases coefficient for penetrant concentration of sorbed Contact-Lens Polymers contact-lens samples dual sorption model Equation fluorine atoms free-volume cell size free-volume cell sizes gas population glassy polymers Henry's law highest free-volume fraction intensity of longest Karen Langley Research Center Langmuir mode concentration lens chemical structure lens samples lenses to breathe longest component lifetime lowest Rockwell hardness mass spectrometry mean free-volume cell microvoid radius microvoid volume mode of sorption NASA Old Dominion University penetrant gas dissolved Performing Organization permeability for O2 polarography population in microvoids Positron Lifetime Measurements Positron Lifetime Spectra pressure at solution psec Research Center Hampton Rockwell hardness number saturation moisture content silicone methacrylate Singh solubility coefficient sorbed gas Space Administration space commercialization program structural constant summarized in table test samples trapped in microvoids Upchurch versus free-volume Virginia volume percent