Preparation and Characterization of Lignin-TiO2 UV-shielding Composite Material by Induced Synthesis with Nanofibrillated Cellulose

Daliang Guo, Jinmeng Zhang, Lizheng Sha, Bei Liu, Xin Zhang, Xiumei Zhang, Guoxin Xue

Abstract


It is desirable to develop biodegradable ultraviolet (UV)-shielding materials from renewable resources, as the demand for sustainability is ever increasing. In this work, a novel lignin-TiO2 UV-shielding composite was synthesized successfully via a hydrothermal method induced by nanofibrillated cellulose (NFC). Comprehensive characterization showed that the lignin-TiO2@NFC composite induced by NFC had good nanoparticle size, shape, and thermal stability. The sunscreen performance of lignin-TiO2@NFC was investigated via mixture with unmodified hand cream. The UV-visible (vis) transmission spectra results revealed that the unmodified cream with 10 wt% lignin-TiO2@NFC absorbed approximately 90% of UV light in the full UV band (200 nm to 400 nm), which indicated that lignin-TiO2@NFC had a good UV-shielding ability.

Keywords


TiO2; Lignin; Cellulose nanofibril; UV-shielding

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