Mechanism of water vapor transport through PET/AlO(sub x)N(sub y) gas barrier films

Article Abstract:

The main objective of the discussion is to offer an improved model for the mechanism of water vapor permeation through PET/AlO(sub x)N(sub y) gas barrier films by combining our preliminary results with structural, chemical, and gas permeation data. The nature of this permeation process we suggest results from the strong chemical interaction of the water molecules with the AlO(sub x)N(sub y) tortuous pore walls possibly at N-rich sites.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Aluminum Oxide, Structure

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Water rearrangement around the schiff base in the late K [K(sub L)] intermediate of the bacteriorhodospin photocycle

Article Abstract:

FTIR investigation conducted at room temperature distinguishes K(sub L)(late K) from K (early K) as distinct photocycle intermediates of all-trans baceriorhodopsin differentiated by the prominence of their hydrogen out-of-plane bending vibration (HOOP) bands is discussed. A water molecule near Asp85, which is perturbed only slightly in K, is more strongly perturbed in K(sub L) and in L.

Schiff bases

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Two-dimensional ATR-FTIR spectroscopic investigation on water diffusion in polypropylene film: water bending vibraion

Article Abstract:

Two-dimensional (2D) correlation ATR-FTIR spectroscopy was used to study the dynamic diffusion behavior and state of water in syndiotactic polypropylene (S-PP). The 2D asynchronous spectra of water bending band clearly reveal that there are separate bands in the 1800-1500 cm(super -1) region.

Unsupported plastics film & sheet, Unsupported Plastics Film and Sheet (except Packaging) Manufacturing, Polypropylene Film

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