SURFACE MODIFICATION OF PVDF POROUS MEMBRANES

Jian-hua Li; Jing Miao; Xi-sheng Shao; You-yi Xu; Qi-qing Zhang

doi:10.1007/s10118-013-1256-1

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SURFACE MODIFICATION OF PVDF POROUS MEMBRANES

PAPER | Updated：2023-01-03

- SURFACE MODIFICATION OF PVDF POROUS MEMBRANES
- Chinese Journal of Polymer Science Vol. 31, Issue 7, Pages: 994-1001(2013)
- Affiliations：
  
  a.Institute of Biomedical and Pharmaceutical Technology & College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350001, China
  b.Institute of Polymer Science, Key Laboratory of Macromolecule Synthesis and Functionalization, (Ministry of Education), Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  **You-yi Xu (徐又一), E-mail: opl-yyxu@zju.edu.cn
- Funds：
- DOI：10.1007/s10118-013-1256-1
  CLC：
- Received：17 July 2012，
  
  Revised：2012-09-11，
  
  Accepted：17 September 2012，
  
  Published：2013-07
- Accepted：
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Jian-hua Li, Jing Miao, Xi-sheng Shao, et al. SURFACE MODIFICATION OF PVDF POROUS MEMBRANES[J]. Chinese Journal of Polymer Science, 2013, 31(7): 994-1001.
DOI：

Jian-hua Li, Jing Miao, Xi-sheng Shao, et al. SURFACE MODIFICATION OF PVDF POROUS MEMBRANES[J]. Chinese Journal of Polymer Science, 2013, 31(7): 994-1001. DOI： 10.1007/s10118-013-1256-1.

摘要

Abstract

A novel method for the surface modification of PVDF porous membranes was introduced. Styrene-(

-(4-hydroxyphenyl) maleimide) alternating copolymer SHMI-Br was blended with PVDF to fabricate SHMI-Br/PVDF membranes. The C-Br bond on the SHMI-Br/PVDF membrane was served as initial site of ATRP

and P(PEGMA) brush was grafted on the PVDF membrane. Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR/FTIR) was used to prove the P(PEGMA) brushes were successfully grafted onto the SHMI-Br/PVDF membrane surface. Introduction of P(PEGMA) brushes on the PVDF membrane surface enhanced the hydrophilicity effectively. When the PEGMA degree of grafting was 16.7 wt%

the initial contact angle of PVDF membrane decreased from 98° to 42°. The anti-fouling ability of PVDF membrane was improved significantly after P(PEGMA) brush was grafted. Taking the PEGMA degree of grafting 16.7 wt% as an example

the flux of protein solution was about 151.21 L/(m

h) when the pH value of the BSA solution was 4.9. As the pH value was increased to 7.4

the flux was changed to 180.06 L/(m

h). However

the protein solution flux of membrane M3 (PEGMA: 0 wt%) was only 73.84 L/(m

h) and 113.52 L/(m

h) at pH 4.9 and 7.4

respectively.

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