文章摘要
肖乾,王斌,黄月文.一种磁性-超疏水棉纤维的制备及性能[J].精细化工,2021,38(7):
一种磁性-超疏水棉纤维的制备及性能
Preparation method and performance of a magnetic-superhydrophobic cotton fiber
投稿时间:2021-01-12  修订日期:2021-03-04
DOI:
中文关键词: 十二烷基三乙氧基硅烷  四氧化三铁  聚多巴胺  磁性  超疏水  油水分离
英文关键词: dodecyltriethoxysilane  ferroferric oxide  polydopamine  magnetic  superhydrophobic  oil-water separation
基金项目:广州市科技计划项目(202002030223)
作者单位E-mail
肖乾 中国科学院大学中科院广州化学研究所 xiaoqian9561@163.com 
王斌 中国科学院大学中科院广州化学研究所 wangbin@gic.ac.cn 
黄月文 中国科学院大学中科院广州化学研究所  
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中文摘要:
      为提高棉纤维的选择性吸附对棉纤维进行改性。首先,将棉纤维浸泡在含有盐酸多巴胺(DA)和纳米Fe3O4的Tris-HCl缓冲溶液中制备得到聚多巴胺(PDA)-Fe3O4磁性棉纤维。其次,用十二烷基三乙氧基硅烷(DTES)在碱性的乙醇水溶液中对PDA-Fe3O4磁性棉纤维进一步改性,得到DTES-PDA-Fe3O4磁性-超疏水棉纤维。采用FTIR、XRD、TG、SEM、EDS、AFM、水接触角测量仪对改性前后棉纤维的化学组成、表面微观结构、疏水性能进行表征;测试了改性棉纤维分离效率、吸附性能。结果表明:DTES-PDA-Fe3O4棉纤维具有微/纳米尺寸粗糙结构;具有优异的超疏水性和磁性,水接触角大于160°;该棉纤维可重复使用且具有超高选择性吸附性能和油水分离性能,可吸附自身质量8.96倍的氯仿,对氯仿油水混合液分离效率大于98.90%。
英文摘要:
      In order to improve the selective adsorption, the cotton fiber was modified. First, polydopamine (PDA)-Fe3O4 magnetic cotton fiber was formed by polymerizing dopamine hydrochloride (DA) and nano-ferric oxide (Fe3O4) in Tris-HCl buffer solution. Secondly, dodecyltriethoxysilane (DTES) was used to further react PDA-Fe3O4 cotton fiber in alkaline ethanol aqueous solution to obtain DTES-PDA-Fe3O4 magnetic-superhydrophobic cotton fiber. FTIR, XRD, TG, SEM, EDS, AFM, water contact angle measuring instruments were used to characterize the chemical composition, surface microstructure, and hydrophobic properties of cotton fibers before and after modification. The separation efficiency, and adsorption properties also be tested. The results show that DTES-PDA-Fe3O4 cotton fiber had a rough structure of micro/nano size. The synthesized cotton fiber had magnetic with excellent superhydrophobicity and a water contact angle greater than 160°. It also had ultra-high selective adsorption, oil-water separation efficiency and reusability. It can absorb chloroform 8.96 times its own weight, and the separation efficiency of chloroform oil-water mixture could reach above 98.90%.
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