双氧水/硫脲氧化还原体系下羊毛低温染色机制

纺织学报 ›› 2008, Vol. 29 ›› Issue (3): 66-71.

双氧水/硫脲氧化还原体系下羊毛低温染色机制

王宗乾;陈维国;汪澜

安徽工程科技学院安徽芜湖241000;浙江理工大学浙江杭州310018

收稿日期:2007-04-17 修回日期:2007-09-09 出版日期:2008-03-15 发布日期:2008-03-15

Mechanism of low temperature dyeing of wool in the presence of H₂O₂/NH₂CSNH₂ redox system

WANG Zongqian;CHEN Weiguo;WANG Lan

1.Anhui University of Technology and Science;Wuhu;Anhui 241000;China;2.Zhejiang Sci?-Tech University;Hangzhou;Zhejiang 310018;China

Received:2007-04-17 Revised:2007-09-09 Online:2008-03-15 Published:2008-03-15

摘要/Abstract

摘要： 为了探讨羊毛织物在双氧水/硫脲体系下的低温染色机制,采用电子顺磁共振谱(ESR)对羊毛纤维、染料进行自由基的检测,采用气相色谱和紫外光谱等方法对氧化还原体系产物进行检测。结果显示:双氧水/硫脲体系在染液中能激发羊毛纤维和弱酸性染料红B产生自由基,促使纤维表面和染料分子高度活化;同时,双氧水/硫脲体系能持续释酸,维持染液稳定的pH值,促进羊毛纤维的溶胀,从而使弱酸性染料能在低温条件下对羊毛织物有较好的染色性能。

Abstract: In order to investigate the mechanism of wool in H_2O_2/NH_2CSNH_2 redox system low temperature dyeing,the advanced analysis such as electron paramagnetic resonance(ESR),gas-chromatography and ultraviolet spectroscopy were used in detection of free radical and the products from the redox system.The results revealed that free radicals from wool fiber and the weak acid dye red B were developed under the H_2O_2/NH_2CSNH_2 redox system in the dyeing solution and this made the molecules on the surface of fiber and the dyes highly reactive.At the same time,the H_2O_2/NH_2CSNH_2 redox system released acid to keep the pH constantly which caused swelling of wool fibers.So that,better dyeing property of wool with weak acid dyes at low temperature was achieved.

王宗乾;陈维国;汪澜. 双氧水/硫脲氧化还原体系下羊毛低温染色机制[J]. 纺织学报, 2008, 29(3): 66-71.

WANG Zongqian;CHEN Weiguo;WANG Lan. Mechanism of low temperature dyeing of wool in the presence of H₂O₂/NH₂CSNH₂ redox system[J]. JOURNAL OF TEXTILE RESEARCH, 2008, 29(3): 66-71.

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