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Chemistry and Industry of Forest Products ›› 2016, Vol. 36 ›› Issue (2): 115-120.doi: 10.3969/j.issn.0253-2417.2016.02.017

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Preparation and Characterization of Lignin-silica Nanoparticles via Click Reaction

XIONG Kai, JIN Can, WU Guo-min, LIU Gui-feng, KONG Zhen-wu   

  1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SAF;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2015-03-31 Online:2016-04-25 Published:2016-04-26

Abstract: Lignin-silica nanoparticles (LS-NPs) were prepared by grafting biodegradable lignin onto silica nanoparticles surface via the copper(I) catalyzed azide-alkyne cycloaddition reaction using bamboo lignin as raw material. Azido group was firstly grafted onto the surface of silica nanoparticles by silanization reaction, then the azido silica nanoparticles were modified with propargylated lignin obtained from bamboo lignin to yield LS-NPs through triazole unitsvia click reaction catalyzed by copper(I). The chemical structures of LS-NPs were characterized by FT-IR, elemental analysis and XPS. The morphology and physicochemical properties of LS-NPs were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Zeta potential and thermal gravimetric analysis (TGA). Experimental results indicated that the diameter of LS-NPs was ranged from 50 to 100 nm. Particularly, the dispersibility and thermo stability of LS-NPs improved significantly.

Key words: lignin, silica nanoparticles, composite particles, click reaction

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