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对聚乙烯亚胺交联 PEI 性能的研究

研究报告. 对聚乙烯亚胺交联 PEI 性能的研究. 付长欣 2013.5.13.

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对聚乙烯亚胺交联 PEI 性能的研究

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  1. 研究报告 对聚乙烯亚胺交联PEI性能的研究 付长欣 2013.5.13

  2. PETIM（polyethyleneimine） modification significantly influences NF performance through the mechanisms of size exclusion, charge repulsion, and solute membrane affinity. Specifically, after PETIM induced cross-linking, the membrane pore size is significantly reduced. The membrane surface becomes more hydrophilic and positively charged. As a result of these synergic effects, the rejection of ciprofloxacin is substantially enhanced. 1. Sun, S.P., T.A. Hatton, and T.S. Chung, Hyperbranched polyethyleneimine induced cross-linking of polyamide-imide nanofiltration hollow fiber membranes for effective removal of ciprofloxacin. Environ Sci Technol, 2011. 45(9): p. 4003-9.

  3. The membrane surface becomes more hydrophilic and positively charged. As a result of these synergic effects, the rejection of ciprofloxacin is substantially enhanced. Furthermore, experimental results show that the molecular weight of PETIM has tremendous effect on NF performance of the as-modified membrane. The NF membrane modified by a high molecular weight PETIM_60K exhibits the highest rejection, the lowest fouling tendency, and keeps a constant flux over the whole pH range.

  4. 表征手段 scanning electron microscope ATR-FTIR XPS contact angles

  5. 聚乙烯亚胺

  6. 2. Dutczak, S.M., et al., “Chemistry in a spinneret” to fabricate hollow fibers for organic solvent filtration. Separation and Purification Technology, 2012. 86: p. 183-189.

  7. PEI和聚乙烯亚胺

  8. 文献1 Poly(ether imide) Membranes Modified with Poly(ethylene imine) as Potential Carriers for Epidermal Substitutes, Macromol. Biosci. 2006, 6, 274–284 将PEI膜置于含PEITIM的异丙醇水溶液中。

  9. 文献2 Amination of Poly(ether imide) Membranes Using Di- and Multivalent Amines, Macromol. Chem. Phys. 2003, 204, No. 3 poly(ethylene imine)s with different molecular weight (Mw ,750 kg/mol;Mw,0.8 kg/mol)

  10. 工作计划 1.查阅市场上可购买到的聚乙烯亚胺（不同分子量） 2.探究实验方案，用不同分子量的聚乙烯亚胺交联PEI，并研究交联后其性能的变化

  11. Thank you !

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