单宁酸基荧光水性聚氨酯的制备与性能研究

doi:10.19677/j.issn.1004-7964.2022.06.007

Leather Science and Engineering ›› 2022, Vol. 32 ›› Issue (6): 39-44.doi: 10.19677/j.issn.1004-7964.2022.06.007

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Synthesis and Characterization of Tannic Acid based Fluorescent Waterborne Polyurethane

LIU Yang^1,2, HUANG Jijin^1,3, ZHANG Zetian^1,2, LI Zhengjun^1,2,*

1. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China;
2. The Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, China;
3. College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China

Received:2022-04-28 Published:2022-12-28 Online:2022-11-22

Abstract

Abstract: A novel tannic acid (TA) based fluorescent waterborne polyurethane (TA-WPU) emulsion was synthesized by prepolymer method using TA as a crosslinking agent, and its chemical structure was characterized by Fourier transform infrared spectroscopy (FT-IR) and UV-vis spectroscopy. The effects of TA content on the particle size and distribution of TA-WPU emulsions, the heat resistance, mechanical properties and water resistance of the corresponding films were investigated. Further, the fluorescence of TA-WPU was characterized by fluorescence spectrum. The results showed that the particle size of TA-WPU emulsions increased gradually, and the heat resistance, mechanical properties and water resistance of the corresponding films were improved with the increase in TA content. Compared with pure WPU, TA-WPU exhibited obvious fluorescence under UV light (365 nm), which can be used as fluorescent anti-counterfeiting coating for leather.

Key words: waterborne polyurethane, tannic acid, fluorescence, coating, environmentally friendly material

CLC Number:

TS529.6

LIU Yang, HUANG Jijin, ZHANG Zetian, LI Zhengjun. Synthesis and Characterization of Tannic Acid based Fluorescent Waterborne Polyurethane[J]. Leather Science and Engineering, 2022, 32(6): 39-44.

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Synthesis and Characterization of Tannic Acid based Fluorescent Waterborne Polyurethane

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