Research Advance of Lignin-based UV Blocking Film Materials
The research advance of lignin-based UV blocking film materials was summarized based on three composite systems:composite with cellulose,degradable plastics and other polymer materials.Firstly,the correlation between lignin molecular structure and UV absorp-tion was clarified,and the effects of lignin molecular structure on the light stability,mechanical strength and barrier properties of the compos-ites were discussed.The reinforcement mechanism of lignin and functional application of different lignin-based composite film materials was discussed.In addition,based on the functional properties of lignin such as ultraviolet absorption,the fabrication and potential application of lignin-based multifunctional composite films were prospected,which provided an important reference for the conversion and high-value utili-zation of lignin.
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