Effect of Surfactants on the Properties and Structure of PVDF-SiO<sub>2</sub> Ultrafiltration Membranes

Qing-tao WU; Hong-tao JIANG; Bei-fu WANG; Li-hong NIE

doi:10.14028/j.cnki.1003-3726.2016.03.010

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Effect of Surfactants on the Properties and Structure of PVDF-SiO₂ Ultrafiltration Membranes

更新时间：2022-09-12

- Effect of Surfactants on the Properties and Structure of PVDF-SiO₂ Ultrafiltration Membranes
- Polymer Bulletin Vol. 29, Issue 3, Pages: 62-68(2016)
- 作者机构：
  
  1.浙江工业大学化学工程学院，杭州 310014
  2.浙江海洋学院石化与能源工程学院，舟山 316000
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2016.03.010
  CLC：
- Published：20 March 2016，
  
  Received：21 July 2015，
  
  Revised：12 November 2015，
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Qing-tao WU, Hong-tao JIANG, Bei-fu WANG, Li-hong NIE. Effect of Surfactants on the Properties and Structure of PVDF-SiO₂ Ultrafiltration Membranes. [J]. Polymer Bulletin 29(3):62-68(2016)
DOI：

Qing-tao WU, Hong-tao JIANG, Bei-fu WANG, Li-hong NIE. Effect of Surfactants on the Properties and Structure of PVDF-SiO₂ Ultrafiltration Membranes. [J]. Polymer Bulletin 29(3):62-68(2016) DOI： 10.14028/j.cnki.1003-3726.2016.03.010.

摘要

在PVDF-SiO

共混膜中添加不同种类的表面活性剂以及两种复配的表面活性剂

通过相转化法制备了一系列的改性膜。实验通过测定未改性膜及改性膜的纯水通量、牛血清白蛋白的截留率、接触角大小、拉伸强度来表征表面活性剂对膜性能的影响

同时通过测试改性膜的通量恢复率来表征膜的抗污染能力。采用扫描电镜(SEM)、X射线衍射(XRD)及热分析(DSC)对膜的微观形貌和晶体结构进行了表征。结果表明

添加单一表面活性剂及复配表面活性剂均可使膜的渗透性能提高

能够改善膜的机械性能、亲水性

对膜的结晶度没有明显的影响

微观结构观察得到改性膜呈现出优化的表面及断面结构

微孔数目变多

孔间的连通性趋好

纳米颗粒在表面分散的更加均匀

改性膜的抗污染性能得到改善。

Abstract

A series of modified membranes were prepared by the method of phase inversion

the single surfactant and compound surfactants (the ratio was 1:1) were added into the PVDF-SiO

blend membranes

respectively. Water flux

retention rate of bovine serum albumin

contact angle and the tensile strength of the unmodified membranes and modified membranes were determined so that the effect of the surfactants on the membranes performance could be characterized

and the fouling ability were characterized through testing flux recovery rate. The microstructure and crystal structure of membranes were characterized through Fourier transform infrared spectroscopy(ATR-FTIR)

X ray diffraction(XRD)

scanning electron microscope(SEM) and thermal analysis (DSC). The results show that the single surfactant and the compound surfactants added into the membrane materials could improve the permeability of membranes compared with the unmodified membranes. It is possible to improve the mechanical and hydrophilic properties of membranes. However

there was no significant effect on the crystal structure of the membranes. The microstructure obtained from the modified membranes was observed to exhibit optimized surface and cross section structure and more pore number. The connectivity between the holes was getting better and nanoparticles dispersed on the surface were more uniform. Besides

the anti-pollution property was improved.

关键词

表面活性剂纳米颗粒改性膜亲水性微观结构

Keywords

SurfactantsNanoparticlesModified membranesHydrophilicMicrostructure

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Effect of Surfactants on the Properties and Structure of PVDF-SiO2 Ultrafiltration Membranes

DOI：10.14028/j.cnki.1003-3726.2016.03.010

摘要

Abstract

关键词

Keywords

references

Effect of Surfactants on the Properties and Structure of PVDF-SiO₂ Ultrafiltration Membranes