超支化季铵盐诱导制备树枝状纳米纤维膜及其性能

doi:10.13475/j.fzxb.20211202809

纺织学报 ›› 2022, Vol. 43 ›› Issue (10): 1-9.doi: 10.13475/j.fzxb.20211202809

• 纤维材料 • 下一篇

超支化季铵盐诱导制备树枝状纳米纤维膜及其性能

姚莹¹, 赵为陶², 张德锁¹(), 林红¹, 陈宇岳¹, 魏红³

1.苏州大学纺织与服装工程学院, 江苏苏州 215021
2.常州纺织服装职业技术学院, 江苏常州 213164
3.苏州市纤维检验院, 江苏苏州 215004

收稿日期:2021-12-13 修回日期:2022-03-09 出版日期:2022-10-15 发布日期:2022-10-28
通讯作者: 张德锁
作者简介:姚莹(1996—),女,硕士生。主要研究方向为微纳米纤维材料及其应用。
基金资助:
苏州市重点产业技术创新前瞻性应用研究项目(SYG201936);国家先进功能纤维创新中心盛虹应急保障与公共安全用纤维材料及制品科研攻关项目(2020-fx010002)

Preparation of dendritic nanofiber membrane induced by hyperbranched quaternary ammonium salt and its properties

YAO Ying¹, ZHAO Weitao², ZHANG Desuo¹(), LIN Hong¹, CHEN Yuyue¹, WEI Hong³

1. College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215021, China
2. Changzhou Vocational Institute of Textile and Garment, Changzhou, Jiangsu 213164, China
3. Suzhou Institute of Fiber Inspection, Suzhou, Jiangsu 215004, China

Received:2021-12-13 Revised:2022-03-09 Published:2022-10-15 Online:2022-10-28
Contact: ZHANG Desuo

摘要/Abstract

摘要：

为开发具有高效过滤性能的膜材料,以超支化季铵盐(HBP-HTC)为枝化促进剂,利用静电纺丝技术一步法制备了聚偏氟乙烯(PVDF)树枝状纳米纤维膜,探讨了纺丝工艺对纤维膜成形结构的影响,分析了树枝状纳米纤维膜的力学性能及其空气过滤性能。结果表明:由于HBP-HTC表面丰富的季铵基团具有对电荷的稳定富集作用,可获得比用小分子季铵盐制成膜更多的树枝状纳米纤维结构,当PVDF质量分数为12%,季铵基团添加量为 0.10 mol/L, 纺丝电压为25 kV时,制得的纤维膜树枝状覆盖率高达78.32%,且具有较好的力学性能;所制备的纳米纤维膜厚度为40 μm时,其过滤效率高达99.995%,而压降为122.4 Pa。

关键词: 超支化季铵盐, 静电纺丝, 聚偏氟乙烯, 树枝状纳米纤维, 过滤性能

Abstract:

In order to develop membrane materials with high efficiency filtration performance, this research prepared polyvinylidene fluoride (PVDF) dendritic nanofiber membranes using hyperbranched quaternary ammonium salt (HBP-HTC) as a branching promoter based on electrostatic spinning technology in one step. The influence of the spinning process on the forming structure of the fiber membrane was explored. The mechanical properties of the dendritic nanofiber membrane were analyzed and its air filtration performance was measured. The results showed that the nanofiber membrane prepared with HBP-HTC has more dendritic structures than the membrance prepared with small molecule quaternary ammonium salts due to the abundant quaternary ammonium groups on the surface of HBP-HTC, which has a stable enrichment effect on charge. When the mass fraction of PVDF was 12%, the quaternary ammonium groups was 0.1 mol/L, and the spinning voltage was 25 kV, the dendritic coverage of the fabricated fiber membranes was as high as 78.32% and demonstrated good mechanical properties. The filtration efficiency of the prepared nanofiber membrane reached 99.995% at the thickness of 40 μm, while the pressure drop is 122.4 Pa.

Key words: hyperbranched quaternary ammonium salt, electrostatic spinning, polyvinylidene fluoride, dendritic nanofiber, filtering performance

中图分类号:

TQ342

姚莹, 赵为陶, 张德锁, 林红, 陈宇岳, 魏红. 超支化季铵盐诱导制备树枝状纳米纤维膜及其性能[J]. 纺织学报, 2022, 43(10): 1-9.

YAO Ying, ZHAO Weitao, ZHANG Desuo, LIN Hong, CHEN Yuyue, WEI Hong. Preparation of dendritic nanofiber membrane induced by hyperbranched quaternary ammonium salt and its properties[J]. Journal of Textile Research, 2022, 43(10): 1-9.

图/表 11

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盐的种类	电导率/(mS·m^-1)	覆盖率/%
—	5.95	0.00
TBAC	140.80	45.87
HBP-HTC	178.72	78.32

HBP-HTC浓度/(mol·L^-1)	电导率/(mS·m^-1)	黏度/(Pa·s)
0	5.95	1.26
0.05	116.34	1.40
0.10	178.72	1.69
0.15	196.76	1.77

HBP-HTC浓度/ (mol·L^-1)	过滤效率/%	压降/ Pa	品质因数/ Pa^-1
0	88.360	47.9	0.045
0.05	99.703	104.9	0.055
0.10	99.995	122.4	0.081
0.15	99.930	113.5	0.064

纤维膜原料	树枝化结构	过滤效率/%	压降/ Pa	文献
聚酰亚胺	无	99.990	251.9	[19]
聚丙烯腈	无	99.560	270.0	[20]
聚乳酸	无	99.964	197.9	[21]
聚苯乙烯/碳纳米管	无	99.680	235.4	[22]
超支化季铵盐/ 聚偏氟乙烯	有	99.995	122.4	本文研究

超支化季铵盐诱导制备树枝状纳米纤维膜及其性能

Preparation of dendritic nanofiber membrane induced by hyperbranched quaternary ammonium salt and its properties

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