聚丙烯腈/羧基丁苯乳胶复合纳米纤维膜的制备及其性能

doi:10.13475/j.fzxb.20200804607

纺织学报 ›› 2021, Vol. 42 ›› Issue (02): 34-40.doi: 10.13475/j.fzxb.20200804607

聚丙烯腈/羧基丁苯乳胶复合纳米纤维膜的制备及其性能

郭雪松¹^,², 顾嘉怡¹^,², 胡建臣¹^,², 魏真真¹^,²(), 赵燕¹^,²

1.苏州大学纺织与服装工程学院, 江苏苏州 215123
2.苏州大学现代丝绸国家工程实验室, 江苏苏州 215123

收稿日期:2020-08-10 修回日期:2020-11-19 出版日期:2021-02-15 发布日期:2021-02-23
通讯作者: 魏真真
作者简介:郭雪松(1997—),女,硕士生。主要研究方向为锂电池纤维隔膜的制备与性能。
基金资助:
江苏省自然科学基金青年项目(BK20190223);南通市科技项目(JC2019013)

Preparation and properties of polyacrylonitrile/carboxyl styrene butadiene latex composite nanofibrous membranes

GUO Xuesong¹^,², GU Jiayi¹^,², HU Jianchen¹^,², WEI Zhenzhen¹^,²(), ZHAO Yan¹^,²

1. College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215123, China
2. National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215123, China

Received:2020-08-10 Revised:2020-11-19 Online:2021-02-15 Published:2021-02-23
Contact: WEI Zhenzhen

摘要/Abstract

摘要：

为提高静电纺聚丙烯腈(PAN)纳米纤维膜的力学性能,将羧基丁苯乳胶(SBR)与PAN纳米纤维膜通过溶液浸泡进行复合,制备了一系列PAN/SBR复合纳米纤维膜,研究了SBR质量分数对PAN纳米纤维膜表面形貌、化学结构、润湿性能、热性能和力学性能的影响。结果表明:SBR以物理粘结的形式与PAN纳米纤维膜复合在一起,随着SBR质量分数的增加,其在PAN纤维表面分布逐渐变得不均匀;SBR的加入对PAN纳米纤维膜的热稳定性没有影响,但会使纤维膜的水接触角增大,亲水性变差;加入少量的SBR(小于等于15.6%)会使PAN纳米纤维膜的断裂强度、断裂伸长、初始模量、断裂能和耐穿刺力增大,当SBR质量分数为PAN纳米纤维膜的8.5%时,复合纳米纤维膜的断裂能提高约4倍,显著改善了PAN纳米纤维膜的力学性能。

关键词: 聚丙烯腈, 羧基丁苯乳胶, 静电纺丝, 纳米纤维膜, 电池隔膜

Abstract:

In order to improve the mechanical properties of electrospun polyacrylonitrile (PAN) nanofiber membranes, a series of PAN/SBR composite nanofibrous membranes were prepared by immersing PAN nanofibrous membranes into carboxyl styrene butadiene latex (SBR) solution. The effects of SBR content on the surface morphology, chemical structure, wettability, thermal and mechanical properties of PAN nanofibrous membranes were investigated. The results reveal that SBR is physically bonded to PAN nanofibers. With the increase of SBR content, the distribution of SBR on the surface of PAN fiber gradually becomes uneven. The addition of SBR has no effect on the thermal stability of PAN membrane, but increases the water contact angle and jeopardizes the hydrophilicity of the membrane. At the same time, adding a small amount of SBR (less than or equal to 15.6%) is found to increase the breaking strength, breaking elongation, initial modulus, breaking energy and puncture resistance of PAN nanofibrous membrane. When the content of SBR is 8.5% of PAN membrane, the breaking energy of the composite membrane is increased by about 4 times, which significantly improves the mechanical properties of PAN nanofiber membrane.

Key words: polyacrylonitrile, carboxyl styrene butadiene latex, electrospinning, nanofibrous membrane, battery separator

中图分类号:

TQ342.93

郭雪松, 顾嘉怡, 胡建臣, 魏真真, 赵燕. 聚丙烯腈/羧基丁苯乳胶复合纳米纤维膜的制备及其性能[J]. 纺织学报, 2021, 42(02): 34-40.

GUO Xuesong, GU Jiayi, HU Jianchen, WEI Zhenzhen, ZHAO Yan. Preparation and properties of polyacrylonitrile/carboxyl styrene butadiene latex composite nanofibrous membranes[J]. Journal of Textile Research, 2021, 42(02): 34-40.

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SBR质量分数/%	厚度/ μm	密度/ (g·cm^-3)	SBR实际质量分数/%	孔隙率/ %	断裂强度/MPa	断裂伸长率/%	初始模量/MPa	断裂能/ (kJ·m^-3)	刺破强度/cN
PAN	27	0.17	0	82.19	5.88	30.00	85.30	1 189	15.84
0.10	27	0.20	4.91	79.36	6.75	32.25	137.17	1 622	25.32
0.25	27	0.16	6.44	74.72	7.46	32.54	159.18	1 963	24.98
0.50	27	0.29	8.50	77.41	10.91	61.25	232.13	5 420	28.75
1.00	27	0.23	15.67	62.55	12.44	43.16	256.96	4 378	24.98
2.50	27	0.21	32.00	47.64	15.28	22.08	324.66	2 607	25.32

聚丙烯腈/羧基丁苯乳胶复合纳米纤维膜的制备及其性能

Preparation and properties of polyacrylonitrile/carboxyl styrene butadiene latex composite nanofibrous membranes

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