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Using a polymer coated attenuated total reflectance (ATR) waveguide and Fourier transform infrared (FTIR) spectroscopy, interactions between penetrants and a Teflon ( R) AF2400 polymer matrix were observed. The AF2400 membrane was coated onto the measuring surface of a ZnSe crystal, concentrating the target diffusant(s) within, and excluding interfering water from, the information region of...
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