Study on Nano-SiO₂ Used to Improve the Property of Ink

Abstract:

The ink used in food packaging is facing great challenge with the increasing of food safety requirements. In this paper, a kind of nano-SiO₂ water-based ink was studied which combined the anti-UV & anti-bacterial characteristics of nano-SiO₂ with the advantage of non-polluting water-based ink. Nano-SiO₂ was prepared by the chemical precipitation method and characterized by XRD and Malvern zetasizer Nano-ZS. Sodium silicate solution and NH₄CI solution were used as the reagent. The experimental results showed that the average size of nano-SiO₂ was less than 100nm, and it was a kind of amorphous powder. The homemade powder of nano-SiO₂¬, water-based ink and dispersant PVP were mixed using Ultra–wave dispersion, and the anti-UV & anti-bacterial water-based ink could be prepared. The UV absorption experiment of this ink shows that the absorption rate was nearly 100%, and the anti-Escherichia.coli(anti-E.coli) experiment showed that the anti-bacterium rate could reach 90%. This study has good application prospect in anti-aging property of ink and the area of food safety packaging.

• Periodical: Advanced Materials Research (Volume 380)
• Pages: 56-59
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.380.56
• Online since: November 2011
• Authors: Wen Tao Huang, Guang Xue Chen, Bao Ling Tang, Ming Guang Yu
• Keywords: Anti-Bacterial, Anti-UV, Nano-SiO₂, Water-Based Ink

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