Optimization and preparation of the polyvinylidene fluoride/polyionic liquid blend membrane

doi:10.11894/iwt.2020-0371

Industrial Water Treatment ›› 2021, Vol. 41 ›› Issue (3): 31-34. doi: 10.11894/iwt.2020-0371

• Research and Experiment • Previous Articles Next Articles

Optimization and preparation of the polyvinylidene fluoride/polyionic liquid blend membrane

Linbin Zhang¹(),Yi Wu¹,Shusu Shen^2,*(),Yongfu Guo²,Mingjun Sheng³,Renbi Bai²

1. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
2. Research and Development Center for Separation and Purification Materials and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
3. Suzhou Water Supply and Drainage Management Office, Suzhou 215004, China

Received:2020-12-21 Online:2021-03-20 Published:2021-03-26
Contact: Shusu Shen E-mail:2778418673@qq.com;shusushen@mail.usts.edu.cn

聚偏氟乙烯/聚离子液体共混膜的优化制备

张林彬¹(),吴逸¹,沈舒苏^2,*(),郭永福²,盛铭军³,白仁碧²

1. 苏州科技大学环境科学与工程学院, 江苏苏州 215009
2. 苏州科技大学分离净化材料与技术研发中心, 江苏苏州 215009
3. 苏州市供排水管理处, 江苏苏州 215004

通讯作者: 沈舒苏 E-mail:2778418673@qq.com;shusushen@mail.usts.edu.cn
作者简介:张林彬(1994-), 硕士。电话: 0512-68092987, E-mail: 2778418673@qq.com
基金资助:
国家自然科学基金(51608342);江苏省“六大人才高峰”(2016-JNHB-067);苏州市科技局民生科技项目(SS201802)

Abstract

Abstract:

A polyvinylidene fluoride(PVDF) blended membranes modified with a polyionic liquid(PIL) were prepared, the effects of the composition of the coagulation bath on the properties of PVDF blended membrane were investigated. The composition of the membrane surface and the pore structure of the membrane were analyzed by FTIR, XPS, SEM. The membrane performance were evaluated by water contact angle and mechanical strength tests, and the adsorption capacity of the membrane for orange Ⅳ was tested. The results showed that increasing of content of DMF in the coagulation bath, the water contact angle of the membrane decreased from 77.79° to 51.94°, which indicated the enhanced hydrophilicity. The adsorption capacity of orange Ⅳ increased from 7.7 mg/g to 16.1 mg/g. The optimized and modified PVDF membrane was realized.

Key words: polyvinylidene fluoride, polyionic liquid, modified membrane

摘要：

研究制备了由聚离子液体（PIL）改性的聚偏氟乙烯（PVDF）共混膜，探讨了凝固浴组成的变化对PVDF共混膜的影响。通过FTIR、XPS、SEM分析了膜表面的组成及膜孔结构；通过水接触角和机械强度测试分析了膜的性能，并研究了膜对橙黄Ⅳ的吸附容量。实验表明：随着凝固浴中DMF含量的增加，膜的水接触角从77.79°减小到51.94°，亲水性显著增强，膜对橙黄Ⅳ的吸附容量从7.7 mg/g增加到16.1 mg/g，实现对PVDF膜的优化改性。

关键词: 聚偏氟乙烯, 聚离子液体, 改性膜

CLC Number:

TQ028.8
X703

Linbin Zhang,Yi Wu,Shusu Shen,Yongfu Guo,Mingjun Sheng,Renbi Bai. Optimization and preparation of the polyvinylidene fluoride/polyionic liquid blend membrane[J]. Industrial Water Treatment, 2021, 41(3): 31-34.

张林彬,吴逸,沈舒苏,郭永福,盛铭军,白仁碧. 聚偏氟乙烯/聚离子液体共混膜的优化制备[J]. 工业水处理, 2021, 41(3): 31-34.

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URL: https://www.iwt.cn/EN/10.11894/iwt.2020-0371

https://www.iwt.cn/EN/Y2021/V41/I3/31

Figures/Tables 6

References 13

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膜编号	N1	N2	N3	N4
铸膜液质量分数/%	21	23	23	23
凝固浴的组成（以质量分数计）	纯水	纯水	95%纯水+5%DMF	90%纯水+10%DMF
凝固浴的温度/℃	30	30	30	30

膜编号	N1	N2	N3	N4
铸膜液质量分数/%	21	23	23	23
凝固浴的组成（以质量分数计）	纯水	纯水	95%纯水+5%DMF	90%纯水+10%DMF
凝固浴的温度/℃	30	30	30	30

膜	C	F	O	N	Br
N1	52.7	41.0	6.3	0	0
N3	53.1	31.6	14.5	0.8	0
N4	46.1	21.1	27.3	4.9	0.7

膜	C	F	O	N	Br
N1	52.7	41.0	6.3	0	0
N3	53.1	31.6	14.5	0.8	0
N4	46.1	21.1	27.3	4.9	0.7

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