摘要
为给紫胶色素在纺织品染色应用中提供理论参考,采用可见分光光度法研究天然染料紫胶色素在不同温度、pH值、金属离子、氧化剂、还原剂条件下的稳定性。结果表明:紫胶色素颜色随着溶液pH值的改变而变化;在酸性条件下温度对色素的影响较小;氧化剂、还原剂以及碱性条件对稳定性影响较大;Ca2+、Cu2+、Al3+、Fe3+、Fe2+、Zn2+、Sn2+等金属离子可与紫胶色素形成配合物,色素的颜色会发生改变,红外光谱证明紫胶亚铁离子配合物的形成。
The stability of lac pigment under different conditions such as temperature, pH value, metal ions, oxidants and reducing agents was investigated by spectrophotometric methods for the purpose of providing a theoretical basis for its utilization in dyeing of textiles. The results showed that the lac pigment color changed with the pH value of solution ; and temperature had little influence on it in acidic condition ; oxidant, reducing agent, and alkali were disadvantageous to its stability; Ca^2+ , Cu^2+ , Al^3+ , Fe^3+ , Fe^2+ , Zn^2+ ,Sn^2+ could complex with lac pigment, alter the colorof pigment solution; lac-Fe^2+ complex was confirmed by infrared absorption spectrum.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2008年第8期67-70,共4页
Journal of Textile Research
基金
江苏省科技攻关项目(BE2005360)
关键词
紫胶色素
稳定性
温度
PH值
金属离子
氧化剂
还原剂
lac pigment
stability
temperature
pH value
metal ions
oxidants
reducing agent