Journal of Radiation Research and Radiation Proces ›› 2018, Vol. 36 ›› Issue (2): 20301-020301.doi: 10.11889/j.1000-3436.2018.rrj.36.020301

• RADIATION CHEMISTRY • Previous Articles     Next Articles

Ultrafiltration membranes prepared from polyethersulfone-grafted-poly (N-vinyl-pyrrolidone) synthesized via simultaneous irradiation in homogenous phase and their anti-fouling performance

FAN Kai1,2,3, ZHOU Guoqing3, YANG Haijun1, HU Jun1, HOU Zhengchi1   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Chongqing College of Electronic Engineering, Chongqing 401331, China
  • Received:2018-01-22 Revised:2018-02-28 Online:2018-04-20 Published:2018-04-19
  • Supported by:

    Supported by National Natural Science Foundation of China (11375252, 20776147, U1632135)

Abstract:

Polymerization was performed in a homogenous phase using N-methylpyrrolidone as the solvent. Pristine polyethersulfone (PES) and PES-grafted poly(N-vinylpyrrolidone) (PES-g-PVP) with different degrees of grafting (DGs) were then cast into membranes via phase inversion methodology. Crucial parameters affecting the graft copolymerization, such as the monomer concentration and absorbed dose, were studied. The results showed that increasing the monomer concentration and absorbed dose both served to improve the DG of the copolymer for monomer concentrations and absorbed dose less than 12% and 35 kGy, respectively. The presence of grafted chains was confirmed by Fourier-transform infrared spectroscopy. Scanning electron microscopy images showed that unlike the pristine PES membrane, the modified PES-g-PVP membrane possessed a "sponge-like" cross section. The contact angle of the PES-g-PVP membranes with a DG of 8.42% was lower than that of the pristine PES membrane by 12.1%, which indicated an improvement of the hydrophilic property of the membrane after grafting PVP onto PES molecular chains. The water flux of the PES-g-PVP membrane with a DG of 8.42% increased by a factor of approximately 4.9 compared with that of the pristine PES membrane, while its bovine serum albumin rejection rate was greater than 90%, indicating the improved antifouling properties of grafted PES-g-PVP membranes.

Key words: Poly (N-vinyl-pyrrolidone), Polyethersulfone, Ultrafiltration membrane, Simultaneous irradiation in homogenous phase

CLC Number: 

  • TL13