PDF(1487 KB)
PDF(1487 KB)
PDF(1487 KB)
聚砜超滤膜的表面化学改性
Surface chemical modification of a polysulfone membrane
LENG YunFei;PAN Kai;YUAN Tao;CAO Bing
利用化学接枝方法在膜的表面引入亲水基团，提高膜的抗污染能力。通过过硫酸钾(K2S2O8)羟基化预处理、铈盐引发丙烯酰胺(AAm)对聚砜(PSF)膜进行亲水化改性，研究了预处理温度、时间以及接枝反应水浴温度的变化对接枝反应的影响；并采用X射线光电子能谱(XPS)和全反射红外光谱(ATR-FTIR)对接枝前后聚砜膜进行表征，用扫描电子显微镜(SEM)观察接枝前后聚砜膜的形貌变化。结果表明，在羟基化预处理温度为40℃，处理时间2h，接枝反应温度为40℃时，接枝改性后的聚砜膜表面水接触角能够降低到29°左右。
Chemical grafting has been employed to introduce hydrophilic groups onto a polysulfone membrane, in an attempt to improve its hydrophilicity and anti-fouling capability. Acrylamide graft copolymerization was initiated by Ce 4+/OH- on the membrane surface after pretreatment with K2S2O8. XPS and ATRFTIR analysis showed that acrylamide (AAm) was successfully grafted onto the PSF membrane surface, and the surface morphology of the membrane after grafting was visualized by SEM. The effects of varying the pretreatment temperature, pretreatment time and grafting reaction temperature on the grafting reaction were also studied. For a pretreatment temperature of 40℃, pretreatment time of 2h, and grafting reaction temperature of 40℃, the water contact angle of the grafted membrane surface can be reduced to about 29°. The results showed that this method could be effectively used to improve the hydrophilicity of the polysulfone membrane.
［1］徐又一， 徐志康. 高分子膜材料［M］. 北京： 化学工业出版社，2005.Xu Y Y, Xu Z K. Polymer membrane materials［M］. Beijing: Chemical Industry Press, 2005. (in Chinese)
［2］袁晓燕, 盛京, 吕哓龙， 等. 高分子多孔膜的表面改性与抗污染研究［J］. 化学工业与工程, 2003, 20(2): 95-99.Yuan X Y, Sheng J, Lv X L, et al. Surface modification and antifouling of polymeric membranes［J］. Chemical Industry and Engineering, 2003, 20(2): 95-99. （in Chinese）
［3］董春华, 齐崴, 何志敏. 接枝丙烯酸亲水化改性聚砜超滤膜及其在多肽分离中的应用［J］. 化工学报, 2007, 58(6): 1501-1506.Dong C H, Qi W, He Z M. Hydrophilic surface modification of polysulfone hollow fiber membrane by acrylic acid treatment and its application to peptide separation［J］. Journal of Chemical Industry and Engineering, 2007, 58(6): 1501-1506. （in Chinese）
［4］梁博, 黄小华,孙树东，等. 聚砜类膜和膜材的改性［J］. 现代塑料加工应用, 2005, 17(3): 62-64.Liang B, Huang X H， Sun S D, et al. The modification of polysulfone membrane and material［J］. Modern Plastics Processing and Applications, 2005, 17(3): 62-64. （in Chinese）
［5］黄恒梅, 王孝军, 杨彬， 等. 聚砜类分离膜的研究进展［J］. 功能材料,2004,35（增刊）: 2088-2093. Huang H M, Wang X J, Yang B, et al. Research advance of polysulfone membrane［J］. Journal of Functional Materials, 2004, 35(supplement): 2088-2093. （in Chinese） ［6］王学松. 现代膜技术及其应用指南［M］. 北京：化学工业出版社,2005.
Wang X S. Modern membrane technology and its application guide［M］. Beijing: Chemical Industry Press, 2005. （in Chinese）
［7］朱长乐. 膜科学技术［M］. 2版. 北京：高等教育出版社,2004.Zhu C L. Membrane science and technology［M］. 2nd Ed. Beijing: Higher Education Press, 2004. （in Chinese）
［8］王倩，王铎，娄红瑞，等. 新型聚醚砜超滤膜的制备与表征［J］. 膜科学与技术，2008，28(6)：9-13.Wang Q, Wang D, Lou H R, et al. Preparation and characterization of novel polyether sulphone ultrafiltration membranes［J］. Membrane Science and Technology, 2008,28(6):9-13. (in Chinese)
［9］DalCin M M, Guiver M D,Striez C N, et al. Surfacemodified polysulfone membranes: Aqueous phase oxidation via persulfate radical［J］. Journal of Applied Polymer Science, 2005, 10(1): 1723-1730.
［10］韩. 聚偏氟乙烯中空纤维膜表面改性研究［D］. 天津： 天津工业大学生物化工研究所, 2004.Han X. The surface modification of Polyvinylidene fluoride hollow fiber memberane［D］. Tian Jin: Institue of Membrane Science and technology, Tianjin Polytechnic University, 2004. （in Chinese）
/
| 〈 |
|
〉 |
