采用相转化法制备了纳米氢氧化铝镁/PVDF杂化膜,考察了纳米氢氧化铝镁的加入对膜的纯水通量、截留率、孔径、孔隙率、微观结构、机械性能、热稳定性和吸附性能的影响.并通过X射线光电子能谱(XPS)和X射线能谱(EDS)分析了膜表面和断面的元素含量.与不添加纳米氢氧化铝镁的PVDF膜性能对比,结果表明,纳米氢氧化铝镁的加入明显提高了膜的纯水通量、截留率、机械性能和吸附性能,而对膜的孔径和孔隙率影响不大.SEM和热重分析表明,纳米氢氧化铝镁的加入明显改变了膜的孔结构,其热性能却略有降低.
The miscellaneous membranes composed of PVDF and nanometer sized aluminum - magnesium hydroxide were prepared by phase - inversion process. The membranes were evaluated by measurements of their flux, retention, pore diameter, porosity, microstructure, mechanical property, thermal stability and adsorbent property by adding nanometer sized aluminum - magnesium hydroxide. XPS and EDS were applied to analyze the element content of the surface and cross - section of the membranes. The results show that the properties of the miscellaneous membranes are improved greatly in flux, retention, mechanical property and adsorbent property by adding nanometer sized aluminum -magnesium hydroxide compared to the PVDF membranes, but their pore diameter and porosity are similar. SEM and TG show that microstructure changed obviously and thermal stability descended.
参考文献
| [1] | Shina O K H .The use of a microporous polyvinylidenceflouride (PVDF) membrane filter to separate contaminating viral particles from biologically important proteins[J].Biologicals,1996,24(02):137-145. |
| [2] | John D P .Polyvinylidene fluoride membrane and method for removing viruses from solution[P].US Pat,5736051,1998-04-07. |
| [3] | Yang Z Y .Use of membrane in wastewater treatment in China.Experiments with hollow fiber membranes in a bioreactor[J].Stuttg Ber Siedlungs Wasser Wirtsch,1997,145:75-86. |
| [4] | John D P .Poly (vinylidene fluoride) membranes[P].DE:4445973,1995-06-29. |
| [5] | W. Doyen;W. Adriansens;B. Molenberghs;R. Leysen .A comparison between polysulfone, zirconia and organo-mineral membranes for use in ultrafiltration[J].Journal of Membrane Science,1996(2):247-258. |
| [6] | I. Genne;S. Kuypers;R. Leysen .Effect of the addition of ZrO_2 to polysulfone based UF membranes[J].Journal of Membrane Science,1996(2):343-350. |
| [7] | 李健生,梁祎,王慧雅,孙秀云,王连军.TiO2/PVDF复合中空纤维膜的制备和表征[J].高分子学报,2004(05):709-712. |
| [8] | 曲云 .耐污染性纳米SiO<,2>/PVDF复合膜的研究[D].天津大学,2006. |
| [9] | Klumpp E;Contreras-Ortega C;Klahre P et al.Sorption of 2,4-dichlorophenol on modified hydrotalcitest[J].Colloids and Surfaces A:Physicochan Eng,2004,230:111-116. |
| [10] | Chitrakar R;Tezuka S;Sonoda A;Sakane K;Ooi K;Hirotsu T .Adsorption of phosphate from seawater on calcined MgMn-layered double hydroxides[J].Journal of Colloid and Interface Science,2005(1):45-51. |
| [11] | 魏云鹤,主沉浮,高峰,张长桥.正电纳米材料--氢氧化铝镁对Cr（Ⅵ）的吸附[J].工业水处理,2002(11):31-33. |
| [12] | 马军;刘红斌;龚承元 等.纳米氢氧化铝镁荷电材料的制备[J].现代化工,2007,27(增):193-195. |
| [13] | 郑翠萍;肖四清 .用库尔特仪(COULTER POROME-TREⅡ)测试微孔膜性能[J].膜科学与技术,1999,19(01):31-33. |
| [14] | 黄宁.PVDF氟碳涂料的红外谱图解析及其组分分析[J].涂料工业,2003(12):45-48. |
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