Flocculation Characteristics of the Polycondensate of 1-Butylamine and Epichlorohydrin(PBE)

1-부틸아민과 에피클로로히드린의 축합체인 PBE의 응집작용 특성

  • Received : 1998.03.03
  • Accepted : 1998.05.14
  • Published : 1998.08.10

Abstract

A water soluble polymer, polycondensate of 1-butylamine and epichlorohydrin (PBE), was synthesized by condensation of 1-butylamine and epichlorohydrin. The characteristics of PBE were determined by IR spectroscopy, low angle light scattering measurement, and $\zeta$ potential measurement. Its interactions with colloidal bentonite particles in aqueous medium were also studied. The results of the studies are as follows : PBE is a cationic polyelectrolyte carrying tertiary ammonium ions on its backbone. The average molecular weight of PBE is found to be about 1,600. The adsorption of PBE on the colloidal bentonite particles are well described with Langmuir adsorption isotherm. As the amounts of PBE adsorbed on the bentonite particles increase, the $\zeta$ potential of the particles changes its sign from negative to positive. This inversion of charge confirms that PBE is cationic in nature. The adsorption of PBE onto the bentonite particles was found to occur through cation exchange reaction. It has been shown that PBE has flocculation effects on the colloidal suspension of bentonite. It has also enhanced effects of filtrability on the digested sludge.

Keywords

Flocculation;Cationic Polyelectrolyte;Adsorption Isotherm;Butylamine;Epichlorhydrin

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Acknowledgement

Supported by : 한국과학재단