Global ETD Search
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Showing 1 to 4 of 4 for “"oxygen degradation"”.
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The Interaction of Nitrogen Monoxide with Pyrolysed Polyacrylonitrile
… Whilst activity persisted in the presence of oxygen, degradation occurred to an extent which renders the PAN.Pin its present form commercially unacceptable A detailed analysis of reaction products and an examination of various properties of PAN. Pare reported. These results are used in a …
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Polysiloxane-polyarylester block copolymers: synthesis and characterization
… polymers displayed improved resistance to atomic oxygen degradation as seen from x-ray photoelectron spectroscopy and scanning electron microscopy. All physical properties were found to be dependent upon siloxane block composition and copolymer block molecular weights. In conclusion, new …
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Mechanistic Studies of the Structure-Photostability Relationship of Organic Conjugated Polymers
… main drawbacks is their susceptibility to photodegradation. Photodegradation occurs when the material is exposed to light leading to irreversible changes in the materials, most often resulting from photoxidation. These irreversible changes cause loss of mechanical, electronic and photophysical …
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Stability of Field Emitter Arrays to Oxygen Exposures
… of these experiments was to determine the degradation mechanisms of molybdenum based field emitter arrays to oxygen exposures and to improve the overall reliability. In addition, we also evaluated the emission current stability of gold-coated field emitter arrays to oxygen exposures. oxygen …