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Preparation of Lignin/TiO2 Nano Composites and Preparation of Nanocellulose-based UV-shielding Film
Received:January 17, 2021  
DOI：10.11980/j.issn.0254-508X.2021.05.003
Key Words:lignin  titanium dioxide  nano composites  UV-shielding
Fund Project:国家重点研发计划（2016YFE0125800）；浙江省自然科学基金（LY20C160006）。
Author NameAffiliationPostcode
ZHANG Jinmeng College of Textile Science and Engineering （International Institute of Silk）， Zhejiang Sci-Tech University， Hangzhou， Zhejiang Province， 310018 310018
ZHANG Xiumei College of Textile Science and Engineering （International Institute of Silk）， Zhejiang Sci-Tech University， Hangzhou， Zhejiang Province， 310018 310018
GUO Daliang College of Textile Science and Engineering （International Institute of Silk）， Zhejiang Sci-Tech University， Hangzhou， Zhejiang Province， 310018
School of Environmental and Natural Resource， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 		310023
XUE Guoxin College of Textile Science and Engineering （International Institute of Silk）， Zhejiang Sci-Tech University， Hangzhou， Zhejiang Province， 310018 310018
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Abstract:Alkali lignin was used as a biological template inducer， and lignin/TiO2 UV-shielding nanoparticles were successfully synthesized by hydrothermal method. Comprehensive characterization results showed that lignin/TiO2 composite nanoparticles had anatase crystal form， good nanoparticle size and thermal stability， it also confirmed that the esterification like reaction took place between the oxygen-containing functional groups of lignin and hydroxyl groups on the surface of titanium dioxide. Thus， lignin and titanium dioxide formed a composite material with an incarcerated structure. Besides， the UV-shielding property of the film prepared by lignin/TiO2 nanoparticles and nanocellulose hydrogel was studied. The results showed that the nanocellulose hydrogel composite film with 10% lignin/TiO2 nanoparticles could absorb about 90% UV light at the all band （200~400 nm）， indicating that lignin/TiO2 nano composites had a good UV-shielding capability.
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