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Photochromic Thermoplastics Doped with Nanostructured Tungsten Trioxide


Tungsten trioxide (WO3)-based photochromic materials endowed with unique functionalities have aroused multidisciplinary interest from chemists, physicists and materials scientists. In this paper, a series of photochromic materials were successfully fabricated via blending WO3 nanocrystals with different morphologies (nanosheet, nanorod, and amorphous) into a polymer matrix composed of poly(methyl methacrylate-co-butyl acrylate) P(MMA-co-BA) random copolymer. Systematic investigations over these hybrid composites revealed that the mechanical and photochromic properties strongly depend on the morphology, size and surface polarity of WO3 compounds, and the loading level of WO3 in the resultant materials. Specifically, the surface polarity of WO3 dominated the compatibility of this inorganic filler with the polymeric phase. A low concentration (0.5% by weight) of WO3 nanorods could effectively reinforce the polymer continuum. On the other hand, WO3 nanosheets tended to deteriorate the mechanical performance of composites. Notably, the concentration and morphology of WO3 heavily influenced the photochromic behavior of the prepared materials, while the surface polarity of WO3 did not play a critical role here. This work elucidated a detailed map for designing and constructing high performance WO3 /polymer composite materials for photochromic applications.

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Publication details

The article was received on 29 Mar 2018, accepted on 13 May 2018 and first published on 14 May 2018

Article type: Paper
DOI: 10.1039/C8NJ01531G
Citation: New J. Chem., 2018, Accepted Manuscript
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    Photochromic Thermoplastics Doped with Nanostructured Tungsten Trioxide

    N. Li, M. Huo, M. Li, T. Li, J. Zhou and J. Zhang, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ01531G

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