photo-oxidation

photo-oxidation

a chemical reaction occurring as a result of absorption of light in the presence of oxygen.
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BASFs range of light stabilizers include UV absorbers that act by shielding the polymer from ultraviolet light, and Hindered Amine Light Stabilizers (HALS) that act by removing the radical intermediates formed in the photo-oxidation process.
Australia : BASFs light stabilizers make translucent safety helmets safer and more durable
Comparison of Oxidative Stability of Sesame (SesamumIndicum), Soybean (Glycine Max) and Mahua (Mee) (MadhucaLongifolia) Oils Against Photo-Oxidation and Autoxidation.
EFFECTS OF ASCORBYL PALMITATE AND METAL IONS ON OXIDATION OF SUNFLOWER OIL UNDER ACCELERATED OXIDATION CONDITIONS
This prevents the melanin synthesis process and protects against photo-oxidation caused by UV radiation.
Light and White
The techniques employed included chromic acid oxidation (CrA) (Masiello and Druffel 1998), high-energy ultraviolet photo-oxidation (PO) (Skjemstad et at.
Carbon and nitrogen molecular composition of soil organic matter fractions resistant to oxidation
Few publications have discussed about the photo-oxidation of PP in the presence of pro-oxidants [11].
Polypropylene nanocomposites with oxo-degradable pro-oxidant: mechanical, thermal, rheological, and photo-degradation performance
The auto-oxidation and photo-oxidation susceptibility of vegetable oils is one of the biggest problems of vegetable oil processing industry (Choe and Min, 2006).
Stabilisation of some vegetable oils by sugarcane leaf extract at ambient temperature
Degradation of polymeric coatings occurs chiefly through photo-oxidation processes as a result of long term exposure which produces cracks in surface morphology thus reducing barrier function of coating [22].
Corrosion Restraint Synergism Evaluation of Polyurethane Duplex Coating System: A Case Study for Various Anthropogenic and Metropolitan Sites of Karachi City
Photo-Oxidation Process-Application for Removal of Color from Textile Industry Effluent.
Heat activated persulfate for decolorization of real textile waste water
Based upon their structure and the functional groups comprising the polymer, some plastics are inherently susceptible to photo-oxidation.
Plastic failure through molecular degradation: multiple mechanisms can attack polymer chains--here's what can go wrong
Focusing on how the chemistry of a coating is broken down, such as through photo-oxidation and hydrolysis, creates a more realistic correlation between lab tests and field performance as it considers the effects on a binder's chemistry, the coating's formulation and weathering conditions.
Bayer MaterialScience Raw Materials Help Polyurethane Coatings with Improved Weatherability
TiO2 is commonly used as catalyst that utilizes the UV portion of the sun light spectrum to induce photo-oxidation and photo-reduction processes.
Development of TiO2 Xwt% InVO4 photocatalytic nanocomposites for ambient light assisted water detoxification
However, most of the research papers on this subjectsuggest that UV light induced decomposition and visible light-induced photo-oxidation are the two most important pathways of fading, as shown below: Dye + UV light BleachingDye + O2 + Light BleachingMany authors studied the chemistry andreactive speciesinvolved in photofading.
EFFECT OF COMBINED APPLICATION ULTRAVIOLET ABSORBER AND ANTIOXIDANT ON LIGHT FASTNESS OF REACTIVE DYED COTTON FABRIC

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