水刺粘胶/聚苯胺复合纤维膜的制备及其吸附性能

doi:10.13475/j.fzxb.20200905806

摘要/Abstract

摘要：

针对现有吸附类材料性价比低,吸附效果单一的问题,采用原位生长法将聚苯胺附着在亲水性好、性价比高和纵横向强力接近的水刺粘胶纤维膜上,制得水刺粘胶/聚苯胺复合纤维膜。对水刺粘胶/聚苯胺复合纤维膜的微观结构和化学组成进行表征与分析,并探究其对印染废水中常见的活性红、甲基橙和Cr⁶⁺的吸附性能及过程。结果表明:当苯胺单体添加量为1.0 g时,水刺粘胶纤维膜上可均匀地生长聚苯胺聚合物;当吸附时间为6 h时,水刺粘胶/聚苯胺复合纤维膜对活性红、甲基橙和Cr⁶⁺离子的吸附量分别达到101.3、81.2和105.04 mg/g,且对三者的吸附过程符合Langmuir等温吸附模型,表明水刺粘胶/聚苯胺复合纤维膜具备良好的吸附性能。

关键词: 水刺粘胶纤维膜, 聚苯胺, 印染废水, 铬离子, Langmuir吸附模型, 原位生长法

Abstract:

Aiming at the low cost-performance ratio and singular adsorption effect of the existing adsorption materials, an in-situ growth method was used to form polyaniline on spunlaced viscose fiber membrane for good hydrophilicity, high cost-performance ratio and close vertical and horizontal strength to produce spunlaced viscose/polyaniline composite fiber membrane. The microstructure and chemical composition of the spunlaced viscose/polyaniline composite fiber membrane were analyzed, and the adsorption performance and the adsorption process for Reactive Red, Methyl Orange and Cr⁶⁺ ion in printing and dyeing wastewater were explored. The research results show that the polyaniline polymer can grow uniformly on the spunlaced viscose fiber membrane when adding 1.0 g aniline monomer, and the adsorption capacity of Reactive Red, Methyl Orange and Cr⁶⁺ ion reached 101.3, 81.2 and 105.04 mg/g respectively after 6 h adsorption. Meanwhile, the adsorption process of Reactive Red, Methyl Orange and Cr⁶⁺ ion conformed to the Langmuir isotherm adsorption model, indicating that the spunlaced viscose/polyaniline composite fiber membrane has good adsorption performance.

Key words: spunlaced viscose fiber membrane, polyaniline, printing and dyeing wastewater, Cr⁶⁺ion, Langmuir adsorption model, in-situ growth method

中图分类号:

TQ342

刘锁, 武丁胜, 李曼, 赵玲玲, 凤权. 水刺粘胶/聚苯胺复合纤维膜的制备及其吸附性能[J]. 纺织学报, 2021, 42(08): 122-127.

LIU Suo, WU Dingsheng, LI Man, ZHAO Lingling, FENG Quan. Preparation of spunlaced viscose/polyaniline composite fiber membrane and its adsorption performance[J]. Journal of Textile Research, 2021, 42(08): 122-127.

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苯胺单体添加量/g	比表面积/(m²·g^-1)	质量增加率/%
0.0	11.461
1.0	10.145	22.30
1.2	7.284	38.44

样品名称	C	O	N	S
水刺粘胶纤维膜	41.57	58.43
水刺粘胶/PANI复合纤维膜	54.83	34.88	7.20	3.09

废水污染物类别	Q_e/ (mg·g^-1)	Q_max/ (mg·g^-1)	b	拟合系数 R²
活性红	101.30	121.45	0.008 70	0.994 9
甲基橙	81.20	101.80	0.006 60	0.988 0
Cr⁶⁺离子	105.04	112.89	0.002 50	0.992 0