Strengthening Effect of Graphene Quantum Dots as UV Blocker for Wood-polyester Nanocomposite Coating

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Madhi Amir Hossein; Madhi Abbas

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Journal Paper

Paper Information

Journal: ORGANIC CHEMISTRY RESEARCH Year:2023 | Volume:9 | Issue:1 Page(s): 44-49

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Information Journal Paper

Title

Strengthening Effect of Graphene Quantum Dots as UV Blocker for Wood-polyester Nanocomposite Coating

Author(s)

Madhi Amir Hossein | Madhi Abbas | Issue Writer Certificate

Keywords

Wood-polyester nanocomposite

Graphene quantum dots

UV-blocker

Pull-off adhesion strength

Abstract

AbstractUV radiation from the sun is one of the reasons for wood weathering. Wooden structures weathering in addition to waste of these renewable resources entails environmental and economic losses. Therefore, use of nano-additives strengthening the coatings on wooden surfaces against harmful ultraviolet (UV) rays is highly necessary. This work aims to examine the strengthening effect of graphene quantum dots (GQDs) in polyester-wood nanocomposite coating against UV radiation from the sun. To achieve this, graphene quantum dots (0.2wt%) were added to unsaturated polyester (UP) resin, and following the radical polymerization process, UP-GQDs nanocomposite coating was prepared. Afterwards, fluorescence effect and UV-blocking behavior in the pure UP and UP-GQDs coatings were evaluated through photoluminescence and UV-visible spectroscopy methods. Adding GQDs 0.2wt% to the polymer matrix resulted in absorption of ultraviolet rays in all of the UV regions and emission of blue fluorescence. Moreover, by adding GQDs to the UP matrix, pull-off adhesion strength of the nanocomposite was raised compared to the pure coating.

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