文献类型：期刊文献

中文题名：壳聚糖荧光防伪印花涂料的制备及其应用性能

英文题名：Preparation and application properties of chitosan fluorescent anti-counterfeiting printing coating

作者：李曼丽[1,2];季志浩[3];龙柱[1];王益峰[2];金恩琪[3]

机构：[1]江南大学纺织科学与工程学院,江苏无锡214122;[2]浙江富润数字科技股份有限公司,浙江绍兴311800;[3]绍兴文理学院浙江省清洁染整技术研究重点实验室,浙江绍兴312000

年份：2024

卷号：45

期号：3

起止页码：114

中文期刊名：纺织学报

外文期刊名：Journal of Textile Research

收录：北大核心2023、CSTPCD、、EI(收录号：20241815995587)、CSCD2023_2024、北大核心、CSCD

基金：浙江省公益技术研究计划项目(LGG21E030005,LGG22E030002);浙江省清洁染整技术研究重点实验室开放基金项目(QJRZ1902);浙江省博士后科研择优资助项目(276089)。

语种：中文

中文关键词：四苯基乙烯;壳聚糖;荧光涂料;印花涂料;荧光发射性能;耐光漂白性能;热稳定性;荧光防伪印花

外文关键词：tetraphenyl ethylene;chitosan;fluorescent coating;printing coating;fluorescence emission property;photobleaching resistance;thermal stability;fluorescent anti-counterfeiting printing

中文摘要：为解决纺织品印染中常用有机荧光防伪印花涂料发光强度低、耐光漂白性弱等问题,以壳聚糖(CS)为生物基高分子涂料代表,采用不同物质的量的聚集诱导发光(AIE)分子四苯基乙烯(TPE)对CS进行荧光标记,制备出一系列具有不同标记率的TPE-CS荧光涂料。测定了TPE-CS防伪涂料的荧光强度、耐光漂白性、热稳定性等,并对棉织物进行防伪印花。结果表明:与目前较常用的聚集诱导荧光猝灭(ACQ)分子标记CS荧光涂料相比,TPE-CS显示出优异的荧光发射性能和耐光漂白性能;当TPE-CS的标记率仅为1.43%(摩尔分数)时,该防伪涂料溶液(1 000 mg/L)的相对荧光强度超过1 090;溶液在强紫外光下曝露1 h后,相对荧光强度仍能达到光漂白前的94.9%。

外文摘要：Objective In order to tackle the low fluorescence intensity and photobleaching resistance of organic fluorescent anti-counterfeiting printing coatings commonly used in textile printing and dyeing industry,aggregation-induced emission(AIE)fluorophore-tetraphenyl ethylene(TPE)labeled chitosan(CS)fluorescent anti-counterfeiting coatings were prepared and their application properties were investigated.Method The typical AIE monomer-tetraphenyl ethylene-isothiocyanate(TPE-ITC)was synthesized initially.The TPE-ITC product was characterized by Fourier transform infrared spectroscopy(FT-IR)and MALDI-TOF mass spectrometry(MS).The study took CS as the representative of bio-based polymer paints,labeled different amounts of TPE fluorophores onto CS using the TPE-ITC as fluorescent monomers,and prepared a series of TPE-CS fluorescent paints with different degrees of labeling(DL).The series of TPE-CS products were characterized by FT-IR and 1H-nuclear magnetic resonance(1 H-NMR)to confirm the labeling of TPE fluorophores.Main application properties of the TPE-CS paints,such as fluorescence intensity,photobleaching resistance and thermal stability,were evaluated.Anti-counterfeit printing on cotton fabric was carried out using the TPE-CS coatings and the common color fastness of the printed fabric was tested systematically according to the national standards.Results FT-IR and MS spectra confirmed that the synthetic product was the expected AIE fluorescent monomer TPE-ITC.FT-IR and ^(1)H-NMR spectra proved that TPE fluorophores were successfully grafted onto the molecular chain of CS.The higher was the feed concentration of TPE-ITC monomers,the higher was the DL of TPE-CS.TGA thermograms illustrated that TPE-CS(DL of 2.56%)had nearly the same thermal stability with unlabeled CS.With the increase in the DL,the fluorescence intensity of TPE-CS showed a gradual increase,reflecting its unique AIE advantage.The TPE-CS coating was colorless and thus its printing pattern on the fabric had good concealment in the sunlight.On the contrary,because of the high fluorescence quantum yield of the AIE fluorophores,the TPE-CS coating was found to emit blue fluorescence under ultraviolet light,and the printing pattern on the fabric could be easily recognized with the naked eye.With the increase in the DL of the TPE-CS,the fluorescent intensity of the printing patterns on the fabric kept increasing.Compared with aggregation caused quenching(ACQ)fluorophore labeled CS,the anti-counterfeiting TPE-CS coatings exhibited superior fluorescence intensity and photobleaching resistance.Even if the DL of TPE-CS was only 1.43%,the relative fluorescence intensity of the anti-counterfeit coating solution(1000 mg/L)could exceed 1090.After exposure to high-intensity ultraviolet light for 1 h,the relative fluorescence intensity of the solution still reached 94.9%of that before photobleaching.The common color fastness ratings for the fabric printed by TPE-CS 3#were all above level 3.Conclusion Labeling AIE fluorophore TPE onto CS macromolecule is one of the effective methods to prepare high-performance organic polymer fluorescent anti-counterfeiting printing paint.The high heat stability of CS is not affected by the labeling of TPE group.The TPE-CS anti-counterfeiting coating within the appropriate range of the DL is sufficient to withstand the baking temperature during printing.In addition,the fluorescence emission intensity of TPE-CS is much higher than that of F-CS after UV photobleaching with the same time and intensity.The use of TPE-CS fluorescent anti-counterfeiting coatings can solve the problems of the ones labeled by ACQ fluorophore,such as low fluorescence emission intensity and weak photobleaching resistance.Taking the application properties and preparation cost into serious consideration,TPE-CS with the DL of 1.43%shows good fluorescence emission performance and high photobleaching resistance and thus the DL value is appropriate.The fabric printed by the TPE-CS coating possesses high fastness to sunlight.Therefore,it can compensate for the lack of sunlight resistance of ACQ fluorescent paints and is suitable for long-term outdoor use.The AIE fluorophore labeled bio-based polymer has great potential to be widely used in the field of textile fluorescent anti-counterfeiting printing as a kind of environment-friendly coating with extensive sources and excellent performance.The preparation and application of TPE-CS fluorescent printing coating can overcome the defects of commonly used fluorescent paints and can be used as an important reference for the preparation of other kinds of AIE fluorophores labeled bio-based fluorescent coatings,such as starch,cellulose,and protein.