Sustainable UV-resistant and anti-bacterial wood coating reinforced with cellulose nanofibers (CNF) and titanium dioxide nanoparticles: Synthesis, characterization and properties

被引:0
|
作者
Sharma, Tulika [1 ]
Manik, Gaurav [1 ]
机构
[1] Indian Inst Technol Roorkee, Dept Polymer & Proc Engn, Saharanpur Campus, Saharanpur 247001, India
关键词
Cellulose nanofibers (CNF); Polyvinyl alcohol (PVA); Anti-bacterial activity; Optical property; COMPOSITE; NANOCRYSTALS; FILMS; EXTRACT;
D O I
10.1016/j.ijbiomac.2025.140533
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
This study primarily focuses on an efficient and long-lasting wood coating deemed essential for improving the durability and functionality of items made from wood. Polyvinyl Alcohol (PVA) is used as the base material in the synthesis of a coating films; Ficus auriculata leaf-derived cellulose nanofibers (CNF) are added to the coating to improve its strength and properties. Incorporating PVA and CNF results in a robust structure, while adding extract enhances the coating's functionality by introducing biologically active compounds. In addition, Titanium Dioxide (TiO2) is added to the film to provide UV resistance and improve its structural stability. Incorporating CNF and bioactive compounds in the extract of Ficus auriculata results in a synergistic impact on the wood coating, effectively regulating bacterial proliferation. The film's structural integrity, chemical content, and shape are comprehensively analyzed by the use of advanced techniques such as Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The film demonstrated exceptional UV-blocking capabilities when the TiO2 concentration exceeded 3 wt%, making it a highly appealing choice for applications that require protection against harmful ultraviolet radiation. Moreover, the material exhibits exceptional antibacterial properties when containing 5 and 7 wt% of TiO2, indicating its potential for many medical and hygienic applications. Nevertheless, as the concentration of TiO2 reaches 3 wt%, the film's transparency diminishes significantly (from 95 to 100 % to <75 %), suggesting that this concentration serves as a critical threshold for achieving both favorable interactions between the components and the effective formation of a durable and adaptable film. This investigation attempts to add to the progress of eco-friendly and multipurpose wood coatings by creating a coating that works more efficiently and is environmentally benign.
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页数:12
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