膜科学与技术

PVDF-g-PVP及PVDF/PVP微滤膜的制备与表征

作者：陈利芳，陆晓峰，卞晓楷，侯铮迟，刘忠英，施柳青，秦强，潘玲，申利国

单位：中国科学院上海应用物理研究所

关键词： PVDF-g-PVP；PVDF/PVP；微滤膜

出版年,卷(期):页码： 2014,34(2):18-22

摘要：

选取经辐射接枝的PVDF-g-PVP接枝物粉体及相同PVP含量的PVDF/PVP共混物粉体，利用浸没－沉淀相转化法制备微滤膜，并通过元素分析、红外光谱（FT-IR）、热重分析（TG）、差示扫描量热（DSC）、扫描电镜（SEM）对PVDF膜、PVDF-g-PVP及PVDF/PVP微滤膜的结构和性能进行了表征，同时对膜的接触角和水通量进行了测试。实验结果表明，PVDF-g-PVP及PVDF/PVP微滤膜的亲水性随PVP含量的增加而增强，但二者的热稳定性与PVDF膜相比略有降低。由于PVDF/PVP微滤膜中的PVP在成膜过程中主要作致孔剂，大部分会流失，因此与PVDF-g-PVP微滤膜相比，相同PVP含量的铸膜液在成膜后PVDF/PVP膜中的N含量较低，膜表面孔数较多，水通量较大，但亲水性略低。

PVDF-g-PVP powders synthesized via radiation grafting metnod and PVDF/PVP blends were cast into microfiltration (MF) membranes via the phase-inversion method. The PVDF membrane, PVDF-g-PVP and PVDF/PVP microfiltration membranes were characterized by elemental analysis, Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric(TG) analysis, differential scanning calorimetry(DSC) and scanning electron microscopy(SEM). The contact angle and water flux were also measured. The results con?rmed that the existence of PVP improved the hydrophilicity of the MF membranes cast from PVDF-g-PVP grafted powders and PVDF/PVP blends, although the thermal stability of PVDF-g-PVP and PVDF/PVP membranes was slightly reduced. PVP in the blend membranes acted as pore former, and most of them lost during the membrane preparation process. For the above-mentioned reasons, PVDF/PVP membranes had lower N content, more pores, higher water flux and lower hydrophilicity, in contrast to PVDF-g-PVP membranes with the same PVP content in the casting solution.

陈利芳（1987-），女，江苏人，博士研究生，从事超/微滤膜改性方面的研究，*通讯联系人，luxiaofeng@sinap.ac.cn

参考文献：

[1]Chang Y，Shih Y J，Ruaan R C，et al．Preparation of poly(vinylidene fluoride) microfiltration membrane with uniform surface-copolymerized poly(ethylene glycol) methacrylate and improvement of blood compatibility[J]．J Membr Sci，2008，309：165～174．
[2]Ulbricht M．Advanced functional polymer membranes[J]．J Polymer，2006，47：2217～2262．
[3]卞晓锴，施柳青，于洋，等．粉体辐射接枝丙烯酸的聚偏氟乙烯超滤膜的制备[J]．膜科学与技术，2012，32（2）：10～18．
[4]Yang X X，Deng B，Liu Z Y，et al．Microfiltration membranes prepared from acryl amide grafted poly(vinylidene fluoride) powder and their pH sensitive behavior[J]．J Membr Sci，2010，362 ：298～305．
[5]Yang X X，Zhang B W，Liu Z Y，et al．Preparation of the antifouling microfiltration membranes from poly(N, Ndimethylacrylamide)grafted poly(vinylidene fluoride) (PVDF) powder[J]．J Mater Chem，2011，21，11908～11915．
[6]Deng B，Yu M，Yang X X，et al．Antifouling microfiltration membranes prepared from acrylic acid or methacrylic acid grafted poly(vinylidene fluoride) powder synthesized via pre-irradiation induced graft polymerization[J]．J Membr Sci，2010，350：252～258．
[7]Yu M，Zhang B W，Deng B，et al．Preirradiation-Induced Emulsion Graft Polymerization of Glycidyl Methacrylate onto Poly(vinylidene fluoride) Powder[J]． J Appl Polym Sci，2010，117： 3575～3581．
[8]Chen L F，Hou Z C，Lu X F，et al．Antifouling microfiltration membranes prepared from poly(vinylidene ?uoride)-graft-poly(N-vinyl pyrrolidone) powders synthesized via pre-irradiation induced graft polymerization[J]．J Appl Polym Sci，2013，128 (6)：3949～3956．
[9]Chen N P，Hong L．Surface phase morphology and composition of the casting films of PVDF-PVP　blend[J]．Polymer，2002，43：1429～1436．
[10]Liu F，Moghareh Abedb M R，Li K．Preparation and characterization of poly(vinylidene fluoride) (PVDF) based ultrafiltration membranes using nano γ-Al2O3[J]．J Membr Sci，2011，366：97～103．
[11]Lanceros-Méndez S，Mano J F，Costa A M，et al．FTIR and DSC studies of mechanically deformed β-PVDF films[J]．J Macromol Sci Part B：Phys，2001，40(3-4) ：517～527．
[12]Peng Q，Lu S Q，Chen D Z，et al．Poly(vinylidene fluoride)-graft-Poly(N-vinyl-2-pyrrolidone) copolymers prepared via a RAFT-mediated process and their use in antifouling and antibacterial membranes[J]．Macromol Biosci，2007，7：1149～1159．
[13]Alfonso G C，Turturro A．Studies of poly( vinylidene fluoride) / poly( vinyl pyrrolidone) blends. I.Thermal transitions by differential scanning calorimetry[J]．J Polym Sci Part B：Polym Phys，1989，27：1195～1208．
[14]Han M J， Nam S T，Thermodynamie and rheological variation in polysulfone solution by PVP and its effect in the preparation of phase inversion memebrane[J]．J Membr Sci，2002，202：55～61．
[15]杨晓天，许振良，魏永明．添加剂对PVDF凝胶速率和膜性能的影响[J]．膜科学与技术，2007，27（4）：26～30．
[16]胡亮平，贺高红，赵薇，等． PVP 添加剂对聚醚酰亚胺超滤膜的影响[J]．膜科学与技术，2008，28(5)：110～113．
[17]Deng B，Yang X X，Xie L D，et al．Microfiltration membranes with pH dependent property prepared from poly(methacrylic acid) grafted polyethersulfone powder[J]．J Membr Sci，2009，330：363～368．
[18]Zhou Y，Xi D L．Porous PVDF/TPU blends asymmetric hollow fiber membranes prepared with the use of hydrophilic additive PVP (K30)[J]．Desalination，2008，223：438～447．
[19]Zhang M，Nguyen Q T，Ping Z．Hydrophilic modification of poly (vinylidene fluoride) microporous membrane[J]．J Membr Sci，2009，27：78～86．

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