한국펄프종이공학회:학술대회논문집 (Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference)

한국펄프종이공학회 (Korea Technical Association of the Pulp and Paper Industry)
권호 표지

THE MECHANISM OF FINES RETENTION USING PAM-BENTONITE SYSTEMS

  • Tom Asselman (Paprican and Department of Chemical Engineering Pulp and Paper Research Center McGill University) ;
  • Gil Garnier (Paprican and Department of Chemical Engineering Pulp and Paper Research Center McGill University)
  • 발행 : 1999.11.01

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초록

The deposition kinetics of fines on fibres was studied to elucidate the flocculation mechanism of a PAM/bentonite retention aid. It is shown that polymer-induced co-flocculation is not permanent. This phenomenon is attributed to a stabilising effect of polymer transfer between surfaces. The resulting polymer layers have a reduced bridging ability with naked surfaces. The addition of bentonite increases the bond strength between fibres and fines, and links non-briding layers. These results explain the positive influence of bentonite on fines retention.

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