SCI和EI收录∣中国化工学会会刊

›› 2010, Vol. 18 ›› Issue (2): 207-216.

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Effects of F127 on Properties of PVB/F127 Blend Hollow Fiber Membrane via Thermally Induced Phase Separation

QIU Yunren1, Matsuyama Hideto2, ZHONG Hong1, YE Hongqi1, HUANG Kelong1   

  1. 1. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
    2. Department of Chemical Science and Engineering, Kobe University, Rokkodai, Nada-ku, Kobe 657-8501, Japan
  • Received:2009-07-02 Revised:2009-12-14 Online:2010-04-28 Published:2010-04-28
  • Supported by:
    Supported by the National Natural Science Foundation of China(20776161)

Effects of F127 on Properties of PVB/F127 Blend Hollow Fiber Membrane via Thermally Induced Phase Separation

邱运仁1, 松山秀人2, 钟宏1, 叶红齐1, 黄可龙1   

  1. 1. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
    2. Department of Chemical Science and Engineering, Kobe University, Rokkodai, Nada-ku, Kobe 657-8501, Japan
  • 通讯作者: QIU Yunren,E-mail:qiu_yunren@yahoo.com.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China(20776161)

Abstract: Hydrophilic poly(vinyl butyral)(PVB)/Pluronic F127(F127) blend hollow fiber membranes were prepared via thermally induced phase separation(TIPS), and the effects of blend composition on the performance of hydrophilic PVB/F127 blend hollow fiber membrane were investigated.The addition of F127 to PVB/polyethylene glycol(PEG) system decreases the cloud point temperature,while the cloud point temperature increases slightly with the addition of F127 to 20%(by mass) PVB/F127/PEG200 system when the concentration of F127 is not higher than 5%(by mass) .Light scattering results show that the initial inter-phase periodic distance formed from the phase separation of 20%(by mass) PVB/F127/PEG200 system decreases with the addition of F127,so does the growth rate during cooling process.The blend hollow fiber membrane prepared at air-gap 5mm,of which the water permeability increases and the rejection changes little with the increase of F127 concentration.For the membrane prepared at zero air-gap,both water permeability and rejection of the PVB/F127 blend membrane are greater than those of PVB membrane,while the tensile strength changes little.Elementary analysis shows that most F127 in the polymer solution can firmly exist in the polymer matrix,increasing the hydrophilicity of the blend membrane prepared at air-gap of 5mm.

Key words: thermally induced phase separation, hollow fiber membrane, blend membrane, poly(vinyl butyral), Pluronic F127

摘要: Hydrophilic poly(vinyl butyral)(PVB)/Pluronic F127(F127) blend hollow fiber membranes were prepared via thermally induced phase separation(TIPS), and the effects of blend composition on the performance of hydrophilic PVB/F127 blend hollow fiber membrane were investigated.The addition of F127 to PVB/polyethylene glycol(PEG) system decreases the cloud point temperature,while the cloud point temperature increases slightly with the addition of F127 to 20%(by mass) PVB/F127/PEG200 system when the concentration of F127 is not higher than 5%(by mass) .Light scattering results show that the initial inter-phase periodic distance formed from the phase separation of 20%(by mass) PVB/F127/PEG200 system decreases with the addition of F127,so does the growth rate during cooling process.The blend hollow fiber membrane prepared at air-gap 5mm,of which the water permeability increases and the rejection changes little with the increase of F127 concentration.For the membrane prepared at zero air-gap,both water permeability and rejection of the PVB/F127 blend membrane are greater than those of PVB membrane,while the tensile strength changes little.Elementary analysis shows that most F127 in the polymer solution can firmly exist in the polymer matrix,increasing the hydrophilicity of the blend membrane prepared at air-gap of 5mm.

关键词: thermally induced phase separation, hollow fiber membrane, blend membrane, poly(vinyl butyral), Pluronic F127