稳定性重氮色盐对蚕丝的低温偶合染色性能  

Low temperature coupling properties of stable diazoniumnium color salt on silk

作　　者：李学崇 陈维国[2] 崔志华[1,3] 郭庆 宋秋亚 李惠军 LI Xuechong;CHEN Weiguo;CUI Zhihua;GUO Qing;SONG Qiuya;LI Huijun(College of Textile Science and Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China;Key Laboratory of Advanced TextileMaterials and Manufacturing Technology,Ministry of Education,Hangzhou 310018,China;National Engineering Research Center for Dyeingand Finishing of Textiles,Tai’an 271000,China;Hangzhou Huasi Xiasha Textile Technology Co.,Ltd.,Hangzhou 310018,China)

机构地区：[1]浙江理工大学纺织科学与工程学院,杭州310018 [2]先进纺织材料与制备技术教育部重点实验室,杭州310018 [3]国家先进印染技术创新中心,山东泰安271000 [4]杭州华丝夏莎纺织科技有限公司,杭州310018

出　　处：《丝绸》2023年第11期10-17,共8页Journal of Silk

基　　金：国家自然科学基金项目(22278377);浙江省自然科学基金项目(LY21B060010);“纺织之光”应用基础研究项目(J202108);国家先进印染技术创新中心项目(ZJ2021A03)。

摘　　要：为了研究高耐湿处理色牢度蚕丝低温染色方法,文章制备了两种色基对应的四氟硼酸重氮色盐并成功分离,通过1H-NMR、FT-IR验证了所合成重氮色盐分子的化学结构。通过测定不同存储方式下重氮液及色盐溶液的紫外—可见光吸收光谱来计算吸光度的变化率,定量分析并证明了所合成的色盐具有较好的存储稳定性。通过对比不同染色工艺和染色对象的K/S值,揭示了重氮色盐单独使用或在色酚存在下对蚕丝的偶合显色机理,证明了稳定性四氟硼酸重氮色盐可用于蚕丝室温条件下染色,所染蚕丝织物的耐皂洗色牢度和耐摩擦色牢度均在4级以上,可为开发高品质蚕丝低温染色技术提供一条新的途径。The amorphous region of silk fibroin,with a loose structure and many amino acid residues containing active functional groups,is the main region of chemical reactions between silk and dyes and other substances.At present,the fastness of acid dyes commonly used in silk is not ideal to wet treatment.Although ideal fastness to wet treatment can be obtained for silk dyed with reactive dyes,reactive dyes are easy to be hydrolyzed,the utilization rate of dyes is low,and the structure of silk fibers is damaged by high temperature dyeing process.It is a low temperature dyeing method to dye cotton fibers with insoluble azo dyes combined with naphthol.There is a high content of tyrosine residues in silk protein,and it is found that diazo salt and tyrosine residues can be coupled,which makes silk achieve covalent bonding reaction with color diazo salt without adding other coupling components.Due to the limitation of the thermal stability of diazo salt,the previous studies on diazo salt dyed silk have adopted the method of mixing and using,which is inconvenient to operate.Therefore,the preparation of diazo salt with certain storage stability is conducive to the industrial application of the method.To solve the problems of traditional dyeing of silk,such as low fastness to wet treatment and high energy consumption at high temperature,we studied the energy-saving dyeing method of silk with high fastness to wet treatment.Tetrafluoroboric acid diazonium color salts corresponding to yellow GC and bright red GGS were prepared and separated successfully with yields of 72.24%and 70.89%.The chemical structure of the synthesized diazonium color salts was verified by 1H-NMR and FT-IR.By measuring the UV-visible absorption spectra of diazonium salt solution and diazonium color salt solution under different storage methods,the absorbance change rates of diazonium color salt were analyzed,and results show that the absorbance change rate of diazo solution for three days is 94.5%,that of diazonium color salt for three days in solution form i

关 键 词：蚕丝 重氮色盐 稳定性 低温 偶合 染色 

分 类 号：TS193.844[轻工技术与工程—纺织化学与染整工程]