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    Optical Behavior of Curcuminoid Hybrid Systems as Coatings Deposited on Polyester Fibers

    Year: 2022

    Journal: Coatings, Volume 12, FEB

    Authors: Raduly, Florentina Monica; Raditoiu, Valentin; Raditoiu, Alina; Purcar, Violeta; Ispas, Georgiana; Frone, Adriana Nicoleta; Gabor, Raluca Augusta; Nicolae, Cristian-Andi

    Organizations: Ministry of Research, Innovation and Digitization, CNCS/CCCDI-UEFISCDI, within PNCDI III [PN-III-P2-2.1-PED-2019-1471]; INCDCP ICECHIM Bucharest 2019-2022 Core Program PN. 19.23-Chem-Ergent [19.23.03.04]

    Keywords: curcumin; fluorescence; UV protection; hybrid coatings; sol-gel; polyester fibers

    The recent development of the eco-friendly current has brought to the attention of researchers natural dyes that are biodegradable, do not cause allergies and generally have anti-UV protection, and antioxidant and antibacterial properties. In this study, we aimed to obtain hybrid materials of the dye-host matrix type, by using the sol-gel process. The silica network was generated by tetraethylorthosilicates and modified with organic siloxane derivatives: phenyltriethoxysilane, 3-glycidoxypropyltriethoxysilane, dimethoxydimethylsilane and dimethoxydiphenylsilane. The nanocomposites obtained by embedding curcumin in siloxane matrices were deposited on polyester fabric and evaluated for their properties, relative to the type of organic network modifier used. Fabrics covered with curcuminoid hybrid systems provide a hydrophobic surface, have fluorescent properties and a UPF +50, and, therefore, they can be used in various fields where it is necessary for textiles to provide signaling, self-cleaning or protection properties against ultraviolet radiation. The coated textile materials have very good resistance properties after several repeated washing cycles, and maintain the original UV protection factor at high values even after washing or during rubbing tests.
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