双亚芴基醌式噻吩型酸性染料对羊毛织物和桑蚕丝织物的染色性能对比研究

Comparative study on dyeing property of difluorenylidene quinoidal thiophene type acid dye on wool and silk fabrics

设计并合成了一只以双亚芴基醌式噻吩结构为发色母体的红色染料Dye-R,其最大吸收波长为551 nm,摩尔消光系数为24 380 L/(mol·cm)。探讨了染料Dye-R在酸性条件下染浴温度、染浴pH值、元明粉用量等因素对羊毛、桑蚕丝织物染色效果的影响,获得羊毛织物染色的优化工艺为:平平加O为0.1 g/L,元明粉为40 g/L,浴比为1∶50,pH值为3,温度为100℃;获得桑蚕丝织物染色的优化工艺:平平加O为0.1 g/L,元明粉为30 g/L,浴比为1∶50,pH值为4,温度为85℃。结果表明:染料Dye-R在酸性条件下对羊毛及桑蚕丝织物均具有较高上染百分率和得色量,染料提升性较好,染色织物具有较高的耐皂洗和耐摩擦色牢度。

A red dye named Dye-R with difluorenylidene quinoidal thiophene as the chromophore backbone was designed and synthesized. The maximum absorption wavelength of Dye-R is 551 nm,and the molar absorption coefficient is 24 380 L/（ mol· cm）. The factors influencing dyeing process for wool and silk at acidic condition,such as dying temperature,pH value of dying bath,dosage of Glauber＇ s salt were discussed. The optimal dyeing process for wool was obtained as,Peregal O 0. 1 g/L,Glauber＇ s salt40 g/L,bath ratio 1 ∶ 50,pH value 3,dyeing temperature 100 ℃; the optimal dyeing process for silk was obtained as, Peregal O 0. 1 g/L, Glauber＇ s salt 30 g/L, bath ratio 1 ∶ 50, pH value 4, dyeing temperature 85 ℃. Dye-R showed promising dyeing properties,such as high dye uptake,good color yield both on wool and silk,good washing color fastness and rubbing color fastness of dyed fabric.