Modified polyacrylonitrile nanofibers for improved dyeability using anionic dyes
Modified polyacrylonitrile nanofibers for improved dyeability using anionic dyes
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改性聚丙烯腈纳米纤维可提高阴离子染料的染色性
DOI：
10.1007/s13204-020-01380-4
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发表时间：
2020
影响因子：
--
通讯作者：
Yu Jianyong
中科院分区：
文献类型：
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作者：
Li Xiangshun;Yang Yuchen;Zhang Hongnan;Quan Zhenzhen;Qin Xiaohong;Li Faxue;Wang Rongwu;Yu Jianyong
纳米纤维除了具有功能性外，其美学性能也是其应用的重要方面，因此应引起足够的重视。研究了阴离子型活性染料对静电纺改性聚丙烯腈（PAN）纳米纤维的染色。为了改善PAN的染色性能，采用自由基聚合法在PAN大分子链上引入第二单体和第三单体进行改性。采用静电纺丝法制备改性PAN纳米纤维，并采用活性染料对纤维进行染色，优化了染色温度、时间、pH值和染料浓度等工艺参数。与未改性的PAN纳米纤维相比，改性后的PAN纳米纤维具有更好的上染率和染色牢度。此外，纳米纤维的形态不受染色过程的影响，这对于PAN纳米纤维的许多关键应用是必要的。
Besides the functional properties of nanofibers, esthetic properties are also very significant for their applications and, thus, should be paid sufficient attention to. In the present article, the coloration of electrospun-modified polyacrylonitrile (PAN) nanofibers was investigated, where the PAN nanofibers were colored by anionic reactive dyes. To improve the dyeability, PAN was modified by introducing second and third monomer on the macromolecular chains using the free radical polymerization method. Then the modified PAN nanofibers were fabricated by electrospinning and dyed with reactive dyestuff, where the dyeing parameters such as temperature, time, pH and concentrations of the dyestuff were optimized. Compared to their unmodified counterparts, modified PAN nanofibers showed much better dye uptake and color fastness. Moreover, the morphology of nanofibers was not affected by the dyeing process, which is necessary for many critical applications of PAN nanofibers.