An Investigation of Microstructural Characteristics of Contact-lens Polymers
National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1990 - Contact lenses - 8 pages
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Abe Eftekhari Abstract The free allow the lenses Characteristics of Contact-Lens chemical structure inhibits cm3 polymer cm3 STP CO2 gases coefficient for penetrant concentration of penetrant concentration of sorbed Contact-Lens Polymers Contact-Lens Samples Fick's diffusion coefficient Fluoroperm fraction also exhibit gas affinity parameter gas permeability gas population gas transfer glassy polymers Henry's concentration Henry's law highest free-volume fraction inhibits the filling Langley Research Center Langmuir mode concentration lens chemical structure lenses to breathe longest component lifetime lowest Rockwell hardness mass spectrometry mean free-volume cell microvoid radius microvoid volume mode of sorption NASA National Aeronautics Old Dominion University Paraperm 02 penetrant gas dissolved Performing Organization permeability for O2 polarography population in microvoids Positron Lifetime Measurements positron lifetime spectroscopy pressure at solution Research Center Hampton Rockwell hardness number saturation moisture content Services & Materials silicone methacrylate sorbed gas Space Administration space commercialization program test samples trapped in microvoids Upchurch Virginia volume percent