纺织学报 ›› 2019, Vol. 40 ›› Issue (01): 1-8.doi: 10.13475/j.fzxb.20180101308

• 纤维材料 •    下一篇

静电纺双疏型聚丙烯腈基纳米纤维膜制备及其性能

仝伟1,2,3,4, 方汝仙1,2,3,4, 李家炜1,2,3,4, 易玲敏1,2,3,4()   

  1. 1.浙江理工大学 材料与纺织学院、丝绸学院, 浙江 杭州 310018
    2.浙江理工大学 先进功能涂层研究所,浙江 杭州 310018
    3.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
    4.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
  • 收稿日期:2018-01-04 修回日期:2018-09-25 出版日期:2019-01-15 发布日期:2019-01-18
  • 通讯作者: 易玲敏
  • 作者简介:仝伟(1993—),男,硕士生。主要研究方向为功能化纳米纤维膜的制备。
  • 基金资助:
    国家自然科学基金资助项目(21276243)

Preparation and properties of amphiphobic polyacrylonitrile electrospun nanofiber films

TONG Wei1,2,3,4, FANG Ruxian1,2,3,4, LI Jiawei1,2,3,4, YI Lingmin1,2,3,4()   

  1. 1. Silk Institute, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    2. Institute of Advanced Functional Coatings, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    3. Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    4. Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2018-01-04 Revised:2018-09-25 Online:2019-01-15 Published:2019-01-18
  • Contact: YI Lingmin

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摘要：

为制备耐磨性能良好的双疏型纤维膜并将其应用于油/水、油/油分离领域,以静电纺丝方法制备的聚丙烯腈(PAN)纳米纤维为基材,采用多巴胺(DA)与十三氟辛基三乙氧基硅烷(G617)对纤维膜进行改性制得双疏型PAN纤维膜。借助扫描电子显微镜、接触角测量仪、X 射线光电子能谱仪等手段探讨纺丝条件、DA与G617用量等对改性前后PAN纤维膜表面形貌以及疏水疏油性能的影响。结果表明:纺丝液中PAN质量分数为13.8%、纺丝电压为18 kV时,纤维形貌最佳;改性后PAN纤维膜的乙二醇接触角可达135.1°,甲苯接触角为0°,水接触角可达141.9°,色拉油接触角可达131.2°;摩擦20次后PAN纤维膜的水、色拉油接触角均大于125°,可顺利实现水/甲苯、甲苯/乙二醇以及甲苯/水乳液的分离。

关键词: 静电纺丝, 聚丙烯腈, 纳米纤维膜, 多巴胺改性, 油/水分离, 油/油分离

Abstract:

In order to prepare amphiphobic fiber materials with good wear resistance for oil/water or oil/oil separation, amphiphobic polyacrylonitrile (PAN) nanofiber materials were prepared by using PAN electrospun nanofibers as the substrate, and dopamine (DA) and tridecafluorooctyltriethoxy-silane (G617) as the surface treatment agent. The effects of various electrospinning process factors, DA and G617 content on the surface morphology and hydrophobic/oleophobic properties of PAN electrospun films were investigated by scanning electron microscopy, contact angle measuring instrument, X-ray photoelectron spectroscopy and so on. The results show that when the mass ratio of PAN in spinning solution is 13.8% and the spinning voltage is 18 kV, the fiber morphology is the best. And the ethylene glycol contact angle, the toluene contact angle, the water contact angle and the salad oil contact angle of the modified PAN electrospun films can be 135.1°, 0°, 141.9° and 131.2°, respectively. Moreover, the water or salad oil contact angle of the modified PAN electrospun films can be larger than 125° after 20 cycles of abrasion test. The results show that the modified PAN electrospun films exhibit good properties in the separation of water/toluene, toluene/ethylene glycol and toluene-water emulsion.

Key words: electrospinning, polyacrylonitrile, nanofiber film, dopamine modification, oil/water separation, oil/oil separation

中图分类号: 

  • TQ340.649

图1

不同PAN质量分数所得静电纺纤维膜的SEM照片(×2 000)"

图2

不同纺丝电压下PAN静电纺纤维膜的SEM照片(×2 000)"

图3

不同多巴胺质量浓度改性后PAN静电纺纤维膜的SEM照片(×2 000)"

图4

不同质量浓度G617改性后PAN膜的静态接触角 (a) Water contact angles; (b) Ethylene glycol contact angles; (c) Salad oil contact angles"

图5

静电纺PAN纤维膜的SEM照片(×2 000) (a) Pure PAN electrospun film; (b) PAN electrospun films pretreated by DA; (c) PAN electrospun film modified by G617"

图6

未改性、DA预处理以及G617改性PAN膜的傅里叶红外光谱"

表1

PAN纤维膜表面的元素含量"

样品名称 C1s N1s O1s F1s Si2p
PAN膜 73.44 17.49 9.07 0.00 0.00
DA预处理PAN膜 65.43 7.76 26.81 0.00 0.00
G617改性PAN膜 36.50 1.62 9.65 48.32 3.90

图7

未改性、DA预处理以及G617改性PAN膜的X射线光电子能谱图"

图8

改性后PAN膜摩擦后的静态接触角"

图9

改性PAN膜摩擦50次后SEM照片(×2 000)"

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