Alkaline Sizing of TMP with AKD

AKD에 의한 TMP의 중성사이징

  • 김봉용 (경북대학교 농과대학 임산공학과)
  • Published : 2002.04.01

Abstract

Alkaline sizing characteristics of TMP (thermomechanical pulp) handsheets with AKD (alkylketene dimer) were studied under various conditions. The sizing degree of TMP handsheet was much lower than that of chemical pulp. Especially, the sized TMP handsheet dried at $20^{\circ}C$ showed no sizing features, but sizing degree of TMP handsheet was clearly Increased by heat treatment at $105^{\circ}C$. The sizing effect of TMP was also improved by addition of $CaCO_3$, but it was not affected by pH. Therefore, sizing effect of TMP with AKD can be improved to some extent by controlling stock condition and heat treatment of handsheet.

References

  1. Tappi v.77 no.4 AKD sizing mechanism Bottorf, K. J.
  2. Tappi v.77 no.3 Determination of rosin sizing agents in paper by pyrolysis-gas chromatography cimbined with on-line methylation Ishida, Y.;Ohtani, H.;Tsuge, S.;Yano, T.
  3. Tappi v.66 no.12 Effect of fillers on rosin sizing of paper Marton,J.;Marton,T.
  4. Tappi v.68 no.4 The mechanism of alkylketene dimer sizing of paper Roberts, J. C.;Garner, N.
  5. Tappi v.70 no.4 Evidence for β-ketoester formation during the sizing of paper with alkylketene dimers Odberg, L.;Lindstrom, T.;Liedberg, B.;Gustavsson, J.
  6. Nordic Pulp Paper Science J. v.1 no.1 On the mechanism of sizing with alkylketene dimers Lindstrom, T.;Soderberg, G.
  7. Appita J. v.54 no.2 Alkylketene dimer sizing of mechanical pulp Kim, B. Y.;Isogai, A.
  8. Phys. Rev. v.17 no.374 Dynamics of capillary flow Washburn, E. W.
  9. Journal of Pulp and Paper Science v.23 no.6 Effect of cationic polymer addition on retention of alkylketene dimer Isogai, A.
  10. Tappi Test Method Forming handsheets for physical testing of pulp