Preparation of microfiltration membranes containing anion-exchange groups

Kenji Kobayashi, Satoshi Tsuneda, Kyoichi Saito, Hideyuki Yamagishi, Shintaro Furusaki, Takanobu Sugo

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Anion-exchange groups were introduced into an existing microfiltration membrane by radiation-induced grafting and subsequent chemical modification. The tertiary-amino-group-containing monomers, i.e. diethylaminoethyl methacrylate (DEAEMA) and vinyl pyridine (VP), and epoxy-group-containing monomer, i.e. glycidyl methacrylate (GMA), were grafted onto the porous polyethylene hollow-fiber membrane. The epoxy group produced in the GMA-grafted hollow fiber was converted into tertiary amino groups by reaction with diethylamine (DEA) and 4-aminopyridine (AP). Subsequently, the DEA- and AP-modified hollow fibers and the DEAEMA- and VP-grafted hollow fibers were all quaternized with benzyl chloride (BC). Measurements of pure water flux and ion-exchange capacity of the resulting membranes, which contained a strongly basic anion-exchange group, demonstrated that the quaternized membrane (DEA-BC-T fiber) originating from the DEA-modified membrane was the most suitable membrane for anion collection by permeation through its pores. The DEA-BC-T fiber had a pure water flux of 1.0 m/hr at a filtration pressure of 0.1 MPa and an ion-exchange capacity of 1 mol/kg.

Original languageEnglish
Pages (from-to)209-218
Number of pages10
JournalJournal of Membrane Science
Volume76
Issue number2-3
DOIs
Publication statusPublished - 1993 Feb 2
Externally publishedYes

Fingerprint

Microfiltration
Anions
Ion exchange
Negative ions
anions
membranes
Membranes
preparation
fibers
Fibers
hollow
Ion Exchange
chlorides
Pyridine
pyridines
monomers
Monomers
Aminopyridines
Fluxes
4-Aminopyridine

Keywords

  • anion-exchange groups
  • benzyl chloride
  • diethylamino group
  • microfiltration membranes
  • pyridyl group
  • radiation-induced grafting

ASJC Scopus subject areas

  • Filtration and Separation
  • Polymers and Plastics

Cite this

Preparation of microfiltration membranes containing anion-exchange groups. / Kobayashi, Kenji; Tsuneda, Satoshi; Saito, Kyoichi; Yamagishi, Hideyuki; Furusaki, Shintaro; Sugo, Takanobu.

In: Journal of Membrane Science, Vol. 76, No. 2-3, 02.02.1993, p. 209-218.

Research output: Contribution to journalArticle

Kobayashi, Kenji ; Tsuneda, Satoshi ; Saito, Kyoichi ; Yamagishi, Hideyuki ; Furusaki, Shintaro ; Sugo, Takanobu. / Preparation of microfiltration membranes containing anion-exchange groups. In: Journal of Membrane Science. 1993 ; Vol. 76, No. 2-3. pp. 209-218.
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