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Pigment and nanofiller photoreactivity database

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Abstract

The service life and durability of nanocomposites containing fillers are affected by photocatalytic properties of these fillers, particularly narrow band gap metal oxides (NBMOs) such as titanium dioxide (TiO2). When irradiated with ultraviolet flux, NBMOs produce electrons and other species that are capable of causing rapid degradation of organic materials with which they are in contact. Electrons and holes (positively charged species) migrate to the surface and react with species to generate various free radicals. Measurement science tools for characterizing TiO2 photoreactivity using electron paramagnetic resonance (EPR) methods have been developed by the Engineering Laboratory (EL) at the National Institute of Standards and Technology (NIST) and a linkage between EPR measurements and current industrial methods has been established. A database of TiO2 photoreactivity values and other data measured via the EPR methods and industrial assays has been compiled and will be accessed through a searchable software database in the NIST Standard Reference Database program—http://www.nist.gov/srd/index.cfm. The database provides fundamental photoreactivity data that can be used for product selection and development purposes to enable more reliable assessments of end-performance.

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Notes

  1. Certain trade names and company products are mentioned in the text or identified in an illustration in order to adequately specify the experimental procedure and equipment used. In no case does such an identification imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the products are necessarily the best available for the purpose.

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Authors and Affiliations

  1. Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA

    Stephanie Watson, I-Hsiang Tseng, Tarek Marray, Bastien Pellegrin & Julien Comte

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  1. Stephanie Watson
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  2. I-Hsiang Tseng
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  3. Tarek Marray
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  4. Bastien Pellegrin
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  5. Julien Comte
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Correspondence to Stephanie Watson.

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Watson, S., Tseng, IH., Marray, T. et al. Pigment and nanofiller photoreactivity database. J Coat Technol Res 9, 443–451 (2012). https://doi.org/10.1007/s11998-012-9408-8

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