金属配合物的合成及其在低温漂白中的应用  

Synthesis of metal complex and its application in low temperature bleaching

作　　者：秦新波[1] 宋敏[1] 尹冲[1] 吴茜[1] 钟毅[1] 张琳萍[1] 徐红[1] 毛志平[1] 

机构地区：[1]东华大学生态纺织教育部重点实验室,上海201620

出　　处：《纺织学报》2012年第11期72-76,85,共6页Journal of Textile Research

基　　金：国家科技支撑计划资助项目(2009BAE88B03)

摘　　要：合成了1,4,7-三甲基-1,4,7-三氮杂环壬烷(Me3TACN)的羧酸桥连双核锰配合物[(Me3TACN)2Mn2(μ-O)(μ-CH3CO2)2][PF6]2.1H2O(MnAcL)和铁配合物[(Me3TACN)2Fe2(μ-O)(μ-CH3CO2)2][PF6]2.1H2O(FeAcL),采用红外光谱(FT-IR)、元素分析(EA)和热重分析(TGA)证实了其结构;并将这2个配合物作为双氧水的催化剂应用于低温漂白棉针织物中。通过单因素实验,探讨了温度、配合物浓度、双氧水质量浓度及pH值对漂白效果的影响,得优化工艺:30%H2O2质量浓度为10 g/L,配合物MnAcL浓度为10μmol/L(FeAcL 15μmol/L),渗透剂和稳定剂DTA的质量浓度均为1 g/L,pH值为10,70℃下漂白60 min。经配合物MnAcL处理后的织物白度达82.3%,顶破强力保留率为95.5%;而经配合物FeAcL处理后的织物白度为65.7%,顶破强力保留率为96.9%。配合物MnAcL在低温下漂白的织物其白度和润湿性与传统高温工艺相当,而顶破强力保留率明显高于传统工艺。Binuclear manganese complex[（Me3TACN）2Mn2（μ-O）（μ-CH3CO2）2] 2·1H2O（MnAcL） and iron complex[（Me3TACN）2Fe2（μ-O）（μ-CH3CO2）2] 2·1H2O（FeAcL） of 1,4,7-trimethyl-1,4,7-triazacyclononane containing carboxylic bridge were synthesized and characterized by FT-IR,elemental analysis（EA） and TGA,and their structures were confirmed.Low temperature bleaching of knitted cotton fabrics was performed using MnAcL and FeAcL as the catalyst for H2O2 and effects of temperature,complex concentration,H2O2 mass concentration,and pH on the bleaching results were investigated,and the optimized process conditions were determined as follows： 30% H2O2 10 g/L,complex MnAcL 10 μmol/L（FeAcL 15 μmol/L）,penetrating agent 1 g/L,stabilizer DTA 1 g/L,pH=10,bleaching at 70 ℃ for 60 min.The whiteness index and bursting strength retention of fabrics treated with MnAcL and FeAcL were 82.3% and 65.7%,and 95.5% and 96.9%,respectively.The fabric bleached with MnAcL at low temperature exhibited similar whiteness and wettability to the fabric bleached with the conventional high temperature bleaching technique,but showed higher bursting strength retention.

关 键 词：金属配合物 催化剂 低温漂白 双氧水 棉纤维 针织物 

分 类 号：TS131.9[轻工技术与工程—纺织材料与纺织品设计]