利用AIBN和PVDF都溶于强极性溶剂的性质，制备含有AIBN的PVDF原膜。在温和的条件下，AIBN加热产生自由基能够有效地引发接枝两性离子聚合物PSBMA到PVDF膜上。膜表面的化学组成用傅里叶全反射红外光谱（FT-IR／ATR）进行表征，场发射电镜（FESEM）用于观察膜表面的形态。当PSBMA的接枝率为13．8％时，膜的接触角由原膜的85°下降到62°，这说明接枝PSBMA大大提高了膜的亲水性。静态吸附实验可以得出PVDF—g—PSBMA膜的抗蛋白质污染的性能得到了显著的提高。在500μg／mLBSA浓度下，蛋白质吸附量由M1的130tLg／cm2下降到M4的50μg／cm2。
The original PVDF membrane containing AIBN was prepared because that the AIBN and PVDF can be all dissolved in strong polar solvent. In facile condition, the free radical generating from heating the AIBN can initiate grafting polymerization of zwitterionic polymer PSBMA onto PVDF membrane. The chemical composi- tion of the membrane surface was characterized by attenuated total reflectance/Fourier transform infrared spec troscopy （FT-IR-ATR）. The field emitting scanning electronic microscopy was conducted to observe the mem- brane morphology. The hydrophilicity of PVDF membranes after grafting PSBMA has improved significantly from the contact angle results, the contact angle of PVDF-g-PSBMA membrane was declined to 62° with the grafted yield of 13.8%. By BSA static absorbed experiment, the anti-fouling properties of modified membrane have enhanced remarkable compared to original membrane.
参考文献
| [1] | 王庐岩,钱英,刘淑秀,叶晓.聚偏氟乙烯分离膜改性研究进展[J].膜科学与技术,2002(05):52-57. |
| [2] | 许振良,翟晓东,陈桂娥.高孔隙率聚偏氟乙烯中空纤维超滤膜的研究[J].膜科学与技术,2000(04):10-13,18. |
| [3] | Wang P.;Kang ET.;Neoh KG.;Tan KL. .Synthesis, characterization and anti-fouling properties of poly(ethylene glycol) grafted poly(vinylidene fluoride) copolymer membranes[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2001(3):783-789. |
| [4] | Ariya Akthakul;Richard F.Salinaro;Anne M.Mayes .Antifouling Polymer Membranes with Subnanometer Size Selectivity[J].Macromolecules,2004(20):7663-7668. |
| [5] | Wan-Zhong Lang;Zhen-Liang Xu;Hu Yang;Wei Tong .Preparation and characterization of PVDF-PFS A blend hollow fiber UF membrane[J].Journal of Membrane Science,2007(1/2):123-131. |
| [6] | Wang P.;Tan KL.;Kang ET.;Neoh KG. .Plasma-induced immobilization of poly(ethylene glycol) onto poly(vinylidene fluoride) microporous membrane[J].Journal of Membrane Science,2002(1):103-114. |
| [7] | Chang Yung;Ko C Y;Lai J Y .Surface grafting control of PgGylated poly( vinylidene fluoride)antifouling membrane via surface-initiated radical graft eopolymerization[J].Journal of Membrane Science,2009,345:160-169. |
| [8] | Hu SW;Brittain WJ .Surface grafting on polymer surface using physisorbed free radical initiators[J].Macromolecules,2005(15):6592-6597. |
| [9] | Bradford M M .A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding[J].Analytical Biochemistry,1976,72:248-254. |
| [10] | McGinty Kathryn M;Brittain William J .Hydrophilic surface modification of poly(vinyl chloride)film and tubing using physisorhed free radical grafting technique[J].Polymer,2008,49:4350-4357. |
| [11] | Chiang Y C;Chang Y;Ruaan R C .Sulfobetaine-grafted poly(vinylidene fluoride)ultrafiltration membranes ex- hibit excellent antifouling property[J].Journal of Membrane Science,2009,339:151-159. |
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