An effective, low-cost and eco-friendly method for preparing UV resistant silk fabric

ABSTRACT

Although silk fabric has a good performance in softness, smoothness, permeability, and comfort, its poor UV resistance and easy yellowing seriously influence its appearance and further application. In this study, to improve its UV resistance, the amino group modified nano-SiO₂ (SiO₂-NH₂) was grafted on to the surface of silk fabric through a condensation reaction, electrostatic interaction, and hydrogen bonding. The results indicated that the UV resistance property of modified silk fabrics was significantly improved and the UV protection factor (UPF) value could reach up to 60. After 20 times of washing, the UPF value could still maintain about 45. Moreover, the SiO₂-NH₂ modification did not influence the whiteness of silk fabric and the cell experiment proved that the modified silk fabrics had good compatibility. The method for silk modification in this study is effective, low-cost, and eco-friendly and it further can be applied in industry for large-scale production of UV-resistant silk fabric.

摘要

真丝织物具有柔软、光滑、透气、舒适等性能，但其抗紫外线性能差，易泛黄，严重影响了其外观和应用前景. 本研究通过缩合反应、静电作用和氢键作用，将氨基修饰的纳米SiO2（SiO2-NH2）接枝到真丝织物表面，以提高其抗紫外性能. 结果表明，改性真丝织物的抗紫外性能得到显著提高，其抗紫外系数可达60. 经过20次洗涤，UPF值仍能保持在45左右. 此外，SiO2-NH2改性对真丝织物的白度没有影响，，细胞实验证明改性后的真丝织物具有良好的相容性. 本文所研究的真丝改性方法是一种高效、低成本、环保的方法，可进一步应用于工业上大规模生产抗紫外线真丝织物.

KEYWORDS:

• Silk fabric
• amino functionalized silicon
• UV resistance
• eco-friendly

关键词:

• 丝绸
• 氨基官能化硅
• 抗紫外线
• 生态友好型

Conflicts of interest

The authors declare no conflicts of interest.

Additional information

Funding

This research was funded by grants from the National Natural Science Foundation of China [No.31830094], Funds of China Agriculture Research System [No. CARS-18-ZJ0102], the fundamental Research Funds for the Central Universities [XDJK2020D014], and the Innovation Program for Chongqing’s Overseas Returnees [No. cx2019090]