低熔点皮芯复合纤维分散染料染色机制tb6w2.docx

低熔点皮芯复合纤维分散染料染色机制丁飞飞1 ，汪澜1 ，林俊雄2(1. 浙江理工大学 先进纺织材料与制备技术教育部重点实验室，低熔点皮芯复合纤维分散染料染色机制丁飞飞1 ，汪澜1 ，林俊雄2(1. 浙江理工大学 先进纺织材料与制备技术教育部重点实验室，浙江 杭州 310018 ;2. 浙江理工大学 生态染整技术教育部工程研究中心，浙江 杭州 310018 )摘 要 以低熔点皮芯复合纤维为主要研究对象，用 2 种典型结构的分散染料——— 分 散 红 玉 SE-GFL ( 偶 氮 型) 和分散蓝 2 BLN( 蒽醌型) 对其进行染色，研究低熔点皮芯复合纤维分散染料染色动力学和热力学。 实验结果表明:分散染料上染低熔点皮芯复合纤维的吸附等温线与分散染料上染普通聚酯纤维一样，都 符 合 Nernst 分 配 型;与 普 通聚酯纤维分散染料染色相比，分散染料在低熔点皮芯复合纤维上的染色速率常数大大增加，半染时间缩短，扩散系 数增大，染色亲和力增加，染色热和染色熵降低。关键词 聚酯纤维; 低熔点皮芯复合纤维; 染色; 染色动力学; 染色热力学中图分类号:TS 193. 5文献标志码:ADyeing mechanism of disperse dye on bi-componentsheath-core fiber with low melting pointDING Feifei1 ，WANG Lan1 ，LIN Junxiong2( 1. Key Laboratory of Advanced Textile Materials and Manufacturing Technology，Ministry of Education，ZhejiangSci-Tech University，Hangzhou，Zhejiang 310018 ，China; 2. Engineering Research Center for Eco-Dyeing andFinishing of Textiles，Zhejiang Sci-Tech University，Ministry of Education，Hangzhou，Zhejiang 310018 ，China)Abstract The paper took bi-component sheath-core fiber with low melting point as the main researchobject. Two typical disperse dyes such as Disperse Red SE-GFL ( azo ) and Disperse Blue 2 BLN( anthraquinone) were used to dye the fiber. The dyeing kinetics and dyeing thermodynamics of dispersedye on the bi-component sheath-core fiber with low melting point were studied as well. The resultsshowed that the type of adsorption isotherm of disperse dye on bi-component sheath-core fiber with lowmelting point was the same as that on conventional polyester fiber，both of which are conforming withNernst distribution mechanism. Compared with dyeing with disperse dye on the conventional polyesterfiber，dyeing with disperse dye on the bi-component sheath-core fiber has some features，i. e. the dyeingrate increases greatly，half-dyeing time decreases，diffusiondyeing heat and dyeing entropy reduce.coefficient and dyeing affinity enhance，polyester fiber; bi-component sheath-core fiberwith low m