Heterogenní kationvýměnné membrány na bázi samosíťujících latexových pojiv

  • J. Machotová Ústav chemie a technologie makromolekulárních látek, Fakulta chemicko-technologická, Univerzita Pardubice, Pardubice
  • E. Stránská MemBrain s.r.o., Stráž pod Ralskem
  • J. Škorňok Ústav chemie a technologie makromolekulárních látek, Fakulta chemicko-technologická, Univerzita Pardubice, Pardubice
Klíčová slova: emulzní polymerace, heterogenní iontovýměnná membrána, latex

Abstrakt

The paper deals with the low-cost technology of producing heterogeneous ion-exchange membranes based on latex binder. This technology consists of mixing latex and ion-exchange resin, casting the mixture into molds of desired shapes, and drying membrane foils at room temperature. Effective heterogeneous cation exchange membranes using self-crosslinking styrene-butyl acrylate latexes as alternative binder materials and commercial cation exchange resin as an ion exchange component were prepared. The latexes were synthesized by the semi-continuous emulsion polymerization technique. It has been found that the heterogeneous membranes containing 45–60 wt.% of the commercial cation exchange resin exhibited excellent electro-separation properties in terms of ion-exchange capacity and electric resistance for all types of latex binders, but they suffered from lower permselectivity and higher water-swelling compared to a commercial Ralex® membrane. In contrast, the self-crosslinking latexes functionalized with 10–15 mol.% of methacrylic acid appear as promising binder materials for the technologically easy production of cation exchange heterogeneous membranes.

Publikované
2018-09-15
Sekce
Články