SCI和EI收录∣中国化工学会会刊

›› 2017, Vol. 25 ›› Issue (7): 938-946.DOI: 10.1016/j.cjche.2016.12.011

• Separation Science and Engineering • 上一篇    下一篇

Interpenetrating polymers supported on microporous polypropylene membranes for the transport of chromium ions

Yesid Tapiero, Julio Sánchez, Bernabé L. Rivas   

  1. Polymer Department, Faculty of Chemistry, University of Concepción, Casilla 160-C, Concepción, Chile
  • 收稿日期:2016-08-13 修回日期:2016-12-29 出版日期:2017-07-28 发布日期:2017-08-17
  • 通讯作者: Bernabé L.Rivas,E-mail address:brivas@udec.cl
  • 基金资助:
    Supported by FONDECYT (Project no. 1150510), PIA (Anillo ACT-130), 7FP-MC Actions Grant, REDOC (MINEDUC Project UCO1202 at U. de Concepción), CHILTURPOL2 (PIRSES-GA-2009 Project, Grant No. 269153) and the Marie Curie Program (n°269153). Julio Sánchez thanks FONDECYT Grant No. 11140324 and CIPA (No.20301.934.15), Chile.

Interpenetrating polymers supported on microporous polypropylene membranes for the transport of chromium ions

Yesid Tapiero, Julio Sánchez, Bernabé L. Rivas   

  1. Polymer Department, Faculty of Chemistry, University of Concepción, Casilla 160-C, Concepción, Chile
  • Received:2016-08-13 Revised:2016-12-29 Online:2017-07-28 Published:2017-08-17
  • Supported by:
    Supported by FONDECYT (Project no. 1150510), PIA (Anillo ACT-130), 7FP-MC Actions Grant, REDOC (MINEDUC Project UCO1202 at U. de Concepción), CHILTURPOL2 (PIRSES-GA-2009 Project, Grant No. 269153) and the Marie Curie Program (n°269153). Julio Sánchez thanks FONDECYT Grant No. 11140324 and CIPA (No.20301.934.15), Chile.

摘要: Modifying polypropylene membranes with interpenetrating polymer networks (IPNs) through the incorporation of poly(glycidyl methacrylate-N-methyl-D-glucamine) (P(GMA-NMG)) was performed by in situ synthesis via radical polymerization. The surface of the polypropylene membrane was activated by hydrophilic grafted polyelectrolyte, and then, pressure injection was used for the impregnation of the reactive solution in the membrane. Two types of pore-filled membranes were synthesized, chelating interpenetrating homopolymer networks of P(GMA-NMG), and chelating-ion exchange interpenetrating polymer networks (e.g., P(GMA-NMG)/P(AA), P(GMA-NMG)/P(AMPSA), and P(GMA-NMG)/P(ClVBTA)). After their synthesis, the modified polypropylene membranes were characterized using techniques such as the electrokinetic potential, SEM, FT-IR, and Donnan dialysis to corroborate the chromium ion transport. The P(GMA-NMG) and complex network membranes exhibited a hydrophilic character with a water-uptake capacity between 20% and 35% and a percentage of modification between 4.0% and 7.0% in comparison with the behavior of the unmodified polypropylene membrane. Hexavalent chromium ions were efficiently transported from the food chamber at pH 9.0 when the 65.2% MTA1 P(ClVBTA) homopolymer IPN membrane and 48.5% MTAG P(GMA-NMG)/P(ClVBTA) IPN membrane were used. Similarly, hexavalent chromium ions were removed from the food chamber at pH 3.0 when MTAG (63.30%) and MTA1 (35.68%) were used in 1 mol·L-1 NaCl solution as the extraction reagent.

关键词: Polypropylene, N-methyl-D-glucamine, Ion exchange, Donnan dialysis, Interpenetrating polymer networks, Chromium

Abstract: Modifying polypropylene membranes with interpenetrating polymer networks (IPNs) through the incorporation of poly(glycidyl methacrylate-N-methyl-D-glucamine) (P(GMA-NMG)) was performed by in situ synthesis via radical polymerization. The surface of the polypropylene membrane was activated by hydrophilic grafted polyelectrolyte, and then, pressure injection was used for the impregnation of the reactive solution in the membrane. Two types of pore-filled membranes were synthesized, chelating interpenetrating homopolymer networks of P(GMA-NMG), and chelating-ion exchange interpenetrating polymer networks (e.g., P(GMA-NMG)/P(AA), P(GMA-NMG)/P(AMPSA), and P(GMA-NMG)/P(ClVBTA)). After their synthesis, the modified polypropylene membranes were characterized using techniques such as the electrokinetic potential, SEM, FT-IR, and Donnan dialysis to corroborate the chromium ion transport. The P(GMA-NMG) and complex network membranes exhibited a hydrophilic character with a water-uptake capacity between 20% and 35% and a percentage of modification between 4.0% and 7.0% in comparison with the behavior of the unmodified polypropylene membrane. Hexavalent chromium ions were efficiently transported from the food chamber at pH 9.0 when the 65.2% MTA1 P(ClVBTA) homopolymer IPN membrane and 48.5% MTAG P(GMA-NMG)/P(ClVBTA) IPN membrane were used. Similarly, hexavalent chromium ions were removed from the food chamber at pH 3.0 when MTAG (63.30%) and MTA1 (35.68%) were used in 1 mol·L-1 NaCl solution as the extraction reagent.

Key words: Polypropylene, N-methyl-D-glucamine, Ion exchange, Donnan dialysis, Interpenetrating polymer networks, Chromium