含羧基邻芳伯胺偶氮染料的合成及其消色行为研究  

Study on the synthesis and fading behavior of azo dyes containing carboxyl ortho aromatic primary amine

作　　者：饶继标 陈维国[1] 高普 王星 崔志华[1,4] RAO Jibiao;CHEN Weiguo;GAO Pu;WANG Xing;CUI Zhihua(Zhejiang Provincial Engineering Research Center for Green and Low-carbon Dyeing&Finishing,Zhejiang Sci-Tech University,Hangzhou 310018,China;School of Advanced Materials Engineering,Jiaxing Nanhu University,Jiaxing 314001,China;Shaoxing Jincao Chemical Limited Company,Shaoxing 312000,China;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Shaoxing 312030,China)

机构地区：[1]浙江理工大学绿色低碳染整技术浙江省工程研究中心,杭州310018 [2]嘉兴南湖学院新材料工程学院,浙江嘉兴314001 [3]绍兴劲草化工有限公司,浙江绍兴312000 [4]浙江省现代纺织技术创新中心,浙江绍兴312030

出　　处：《浙江理工大学学报（自然科学版）》2024年第4期474-481,共8页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(21808210);浙江省“尖兵”“领雁”研发攻关计划项目(2023C01096);“纺织之光”应用基础研究项目(J202108)。

摘　　要：为了开发水溶性高、甲醛消除能力强的新型甲醛指示消除剂,利用羧基的引入提高水溶性,设计合成了一种含羧基吡唑啉酮结构的邻芳伯胺偶氮染料C1,并通过质谱、红外光谱及核磁氢谱等表征手段确定了合成染料的分子结构。探讨了不同pH值及温度等环境条件对C1与甲醛发生消色反应的影响规律,研究了C1与甲醛消色反应的选择性,并通过甲醛浓度与C1消色后染液吸光度的关系曲线建立了一套定量检测甲醛的方法。结果表明:pH值为2时,C1与甲醛消色反应最快;在30~60℃范围内提高温度可增加消色反应速度;C1对甲醛具有良好的消色选择性,消色后染液吸光度与甲醛浓度呈良好的线性关系,可定量检测甲醛,检测限为0.33μg/mL。合成的染料C1能与甲醛发生灵敏的消色反应,同时又具有良好的水溶性,可用作检测甲醛的指示剂与甲醛的消除剂。To develop a new formaldehyde indicator elimination agent with high water solubility and strong formaldehyde elimination ability,the introduction of carboxyl groups was used to improve water solubility.An ortho aromatic primary amine azo dye C1 with carboxyl pyrazolone structure was designed and synthesized,and the molecular structure of the synthesized dye was determined by characterization methods such as mass spectrometry,infrared spectroscopy,and nuclear magnetic resonance spectroscopy.The article explored the influence of different pH values and temperature environmental conditions on the color fading reaction between C1 and formaldehyde,studied the selectivity of the color fading reaction between C1 and formaldehyde,and established a quantitative detection method for formaldehyde through the relationship curve between formaldehyde concentration and the absorbance of the dye solution after C1 color fading.The results show that at pH 2,C1 had the fastest fading reaction;within the range of 30~60℃,increasing the temperature can increase the rate of color fading reaction;C1 has good decolorization selectivity for formaldehyde.After decolorization,the absorbance of the dye solution shows a good linear relationship with formaldehyde concentration,and can quantitatively detect formaldehyde with a detection limit of 0.33μg/mL.The synthesized dye C1 can undergo a sensitive fading reaction with formaldehyde.It also has good water solubility and can be used as an indicator for detecting formaldehyde and an elimination agent for formaldehyde.

关 键 词：邻芳伯胺 偶氮染料 染料消色 甲醛检测 甲醛消除 

分 类 号：TQ618.5[化学工程—精细化工]