在聚砜超滤膜表面通过水/油两相界面聚合的方法,制备了高通量高截留率的聚酰胺反渗透复合膜.研究了强极性有机相添加剂1,3-二甲基-2-咪唑啉酮(DMI)对聚酰胺反渗透膜结构及性能的影响.采用扫描电子显微镜(SEM)和原子力显微镜(AFM)对反渗透膜表面结构形貌进行表征,聚酰胺分离层化学结构则通过全反射红外光谱(ATR-FTIR)来进行分析,采用接触角测试仪来评价膜表面亲水性.以500 mg/L NaC1作为进料液,在1 MPa压力下评价了反渗透膜片的分离性能.研究结果显示,有机相添加剂DMI可以有效调控反渗透膜表面结构,在不损失盐截留率的前提下显著提高反渗透膜的水通量.
参考文献
| [1] | Marian G.Marcovecchio;Sergio F.Mussati;Pio A.Aguirre;Nicolas J.;Scenna.Optimization of hybrid desalination processes including multi stage flash and reverse osmosis systems[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,20051/3(1/3):111-122. |
| [2] | Kim CK.;Roh IJ.;Kim JJ.;Kim JH..The changes of membrane performance with polyamide molecular structure in the reverse osmosis process[J].Journal of Membrane Science,20002(2):189-199. |
| [3] | 周勇;潘巧明;郑根江.芳香聚酰胺类反渗透膜的研究进展[J].水处理技术,2009(1):5-10. |
| [4] | In-Chul Kim;Bo-Reum Jeong;Seong-Joong Kim.Preparation of high flux thin film composite polyamide membrane: The effect of alkyl phosphate additives during interfacial polymerization[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2013:111-114. |
| [5] | Seung-Yeop Kwak;Soo Gyung Jung;Sung Ho Kim.Structure-motion-performance relationship of flux-enhanced reverse osmosis (RO) membranes composed of aromatic polyamide thin films[J].Environmental Science & Technology: ES&T,200121(21):4334-4340. |
| [6] | Tang CYY;Kwon YN;Leckie JO.Probing the nano- and micro-scales of reverse osmosis membranes - A comprehensive characterization of physiochemical properties of uncoated and coated membranes by XPS, TEM, ATR-FTIR, and streaming potential measurements[J].Journal of Membrane Science,20072(2):146-156. |
| [7] | Chuyang Y. Tang;Young-Nam Kwon;James O. Leckie.Effect of membrane chemistry and coating layer on physiochemical properties of thin film composite polyamide RO and NF membranes I. FTIR and XPS characterization of polyamide and coating layer chemistry[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,20091/3(1/3):149-167. |
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