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Effect of boehmite nanorods on the properties of glycidoxypropyl-trimethoxysilane (GPTS) hybrid coatings

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Abstract

AlOOH boehmite nanorods, synthesized by a solid-based process, were incorporated into a sol–gel coating in which GPTS was used as a precursor. Transparent composite coatings with nanorod content up to 40 wt% were obtained by spin coating the sol–gel mixture on glass substrates. Nanorods in the coating were found be aligned parallel to the substrate surface. Mechanical properties, such as modulus and hardness of the nanorod filled coating, were slightly lower than coatings of the same composition but filled with commercially available nanosized boehmite particles. However, crack toughness was greatly improved, as supported by nanoindentation test results. The improvement in crack toughness was attributed to the high aspect ratio of the rigid nanorods, in addition to the fact that the nanorods were aligned within the composite parallel to the surface.

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Authors and Affiliations

  1. Singapore Institute of Manufacture Technology, 71 Nanyang Drive, Singapore, 638075, Republic of Singapore

    Quan Chen, Jason Gim Hong Tan, Yu Chan Liu & Xian Ting Zeng

  2. Institute of Chemical and Engineering Sciences, 1 Pesek Road, Jurong Island, Singapore, 627833, Republic of Singapore

    Shou Cang Shen & Wai Kiong Ng

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  1. Quan Chen
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  2. Jason Gim Hong Tan
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  3. Shou Cang Shen
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  4. Yu Chan Liu
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  6. Xian Ting Zeng
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Correspondence to Quan Chen.

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Chen, Q., Tan, J.G.H., Shen, S.C. et al. Effect of boehmite nanorods on the properties of glycidoxypropyl-trimethoxysilane (GPTS) hybrid coatings. J Sol-Gel Sci Technol 44, 125–131 (2007). https://doi.org/10.1007/s10971-007-1621-z

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  • DOI: https://doi.org/10.1007/s10971-007-1621-z

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