Poly(vinyl)alcohol film composited with carbon dots from water hyacinth stalks based on gamma irradiation for the UV blocking film


  • Tanagorn KWAMMAN Thailand Institute of Nuclear Technology (Public Organization), Nakorn Nayok 26120, Thailand
  • Threeraphat CHUTIMASAKUL Thailand Institute of Nuclear Technology (Public Organization), Nakorn Nayok 26120, Thailand
  • Panida SANGANGAM Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110, Thailand
  • Nattamon PUENGPOSOP Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110, Thailand
  • Kanokorn WECHAKORN Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110, Thailand


Poly(vinyl)alcohol film, Carbon dot, Water hyacinth stalk, Gamma irradiation


          UV-radiation in the range of 200 nm to 400 nm from sunlight can inhibit the photosynthesis process in plants, while visible light in the range of 400 nm to 700 nm promotes photosynthesis and plant growth. In this work, poly(vinyl)alcohol-carbon dots composite film (PVA-CDs film) was developed as a UV-blocking film due to the excellent optical properties of carbon dots and the film-forming properties of PVA. For the synthesis of carbon dots using gamma irradiation, water hyacinth stalk, an invasive aquatic plant, was used as a carbon source. The result showed that PVA-CDs composite film exhibited excellent UV absorption (200 nm to 400 nm, 91%) and fluorescence emission in the visible region. Furthermore, PVA-CDs composite film displayed a blue-to-red light emission of 57.2%, and the UV emission also significantly decreased.  


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How to Cite

T. KWAMMAN, T. CHUTIMASAKUL, P. SANGANGAM, N. PUENGPOSOP, and K. WECHAKORN, “Poly(vinyl)alcohol film composited with carbon dots from water hyacinth stalks based on gamma irradiation for the UV blocking film”, J. Met. Mater. Miner., vol. 31, no. 4, pp. 123-128, Dec. 2021.



Original Research Articles