棉针织物铜或锰金属配合物漂白机理  

Mechanism of cotton knitted fabric bleaching using metal complexes containing copper or manganese

作　　者：李荣健 温淑娟 毛志平[1,2] 陈八斤 金鲜花 纪柏林 LI Rongjian;WEN Shujuan;MAO Zhiping;CHEN Bajin;JIN Xianhua;JI Bolin(College of Chemistry and Chemical Engineering,Donghua University,Shanghai 201620,China;National Engineering Research Center for Dyeing and Finishing of Textiles,Donghua University,Shanghai 201620,China;Hangzhou Transfar Fine Chemical Co.,Ltd.,Hangzhou 310000,China;Zhejiang Transfar Functional New Material Co.,Ltd.,Hangzhou 310000,China)

机构地区：[1]东华大学化学与化工学院,上海201620 [2]东华大学国家染整工程技术研究中心,上海201620 [3]杭州传化精细化工有限公司,浙江杭州310000 [4]浙江传化功能新材料有限公司,浙江杭州310000

出　　处：《印染》2024年第6期13-17,共5页China Dyeing and Finishing

基　　金：杭州市科技发展计划(202204T10);中央高校基本科研业务费专项资金资助项目(2232022G-04);浙江省清洁染整技术研究重点实验室开放基金资助(QJRZ2310)。

摘　　要：为了阐明金属配合物对棉针织物的漂白机理及性能,研究了多吡啶类铜配合物(CAT-3)与大环多胺类锰配合物(JK500)对棉针织物白度和双氧水(H_(2)O_(2))分解率的影响。结果表明:CAT-3作催化剂时,优化的漂白工艺为NaOH 1.0 g/L、H_(2)O_(2)13 g/L、CAT-32.0 g/L,织物白度为68.97%;JK500作催化剂时,漂白优化工艺为NaOH 2.0 g/L、H_(2)O_(2)13 g/L、JK5002.5 g/L,织物白度为65.92%。75℃处理60 min后,CAT-3/H_(2)O_(2)体系中H_(2)O_(2)分解率达到60.93%,远高于无CAT-3时的12.31%;JK500/H_(2)O_(2)体系中H_(2)O_(2)分解率为19.25%,未加JK500时的分解率为18.18%。CAT-3/H_(2)O_(2)体系的羟基自由基(HO·)荧光检测强度远高于对照组C_(0);JK500/H_(2)O_(2)及其对照组J0体系的HO·荧光强度均较小;超氧自由基(O_(2)^(-)·)是两种催化体系有效的漂白活性成分,而单线态氧(1O2)对织物白度基本无影响。In order to elucidate the bleaching mechanism and performance of metal complexes on cotton knit⁃ted fabrics,the effects of the polypyridyl copper complex(CAT-3)and the macrocyclic polyamine manganese complex(JK500)on the whiteness index of cotton knitted fabrics and on the decomposition rate of hydrogen peroxide(H_(2)O_(2))are investigated.The results show that the optimized bleaching process by using CAT-3 as a catalyst is NaOH 1.0 g/L,H_(2)O_(2)13 g/L,CAT-32.0 g/L,imparting fabric with a whiteness index of 68.97%;and the optimized bleaching process by using JK500 as a catalyst is NaOH 2.0 g/L,H_(2)O_(2)13 g/L,and JK5002.5 g/L,show⁃ing a fabric whiteness index of 65.92%.After being treated at 75℃for 60 min,the H_(2)O_(2)decomposition rate of the CAT-3/H_(2)O_(2)system reaches 60.93%,which is much higher than that without CAT-3(12.31%).The H_(2)O_(2)de⁃composition rate of the JK500/H_(2)O_(2)system is 19.25%,close to the one without JK500(18.18%).The hydroxyl radical(HO·)fluorescence intensity of the CAT-3/H_(2)O_(2)system is much stronger than that of the C_(0)control.However,a very low fluorescence intensity for the JK500/H_(2)O_(2)or J0 control system is detected.It is proved that the superoxide radical(O_(2)^(-)·)is an effective bleaching active component in both copper and manganese complex bleaching systems,while the singlet oxygen(1O2)shows little effect on the fabric whiteness index.

关 键 词：金属配合物 低温漂白 棉针织物 羟基自由基 超氧自由基 

分 类 号：TS190.923[轻工技术与工程—纺织化学与染整工程]