JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Effect of Cationic Starch and MFC Addition on the Flocculation Behaviour of GCC
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Effect of Cationic Starch and MFC Addition on the Flocculation Behaviour of GCC
Yong, Seong Moon; Lee, Yong Kyu; Won, Jong Myoung;
  PDF(new window)
 Abstract
The reduction of carbon dioxide emission is hot issue in the world because we are confronted with serious global warming and climate change. As a part of carbon dioxide reduction efforts, various approaches for increasing filler loading have been carried out in order to decrease the energy consumption in papermaking processes. Effects of the pretreatment of GCC with cationic starch and MFC on the flocculation behaviour of GCC were investigated in this study. Pretreatment of GCC with cationic starch caused the change of electric charge of suspension and flocculation behaviour of GCC. Largest flocculation size was obtained near the isoelectric point in the case of cationic starch treatment. When MFC (30 times grinded) was added after preflocculation of GCC with cationic starch, the flocculation size was increased, but largest flocculation size was obtained at -150 mV of electric charge of suspension in this study. However the addition of highly grinded MFC (60 times grinded) caused smaller flocculation size of GCC than those of MFC (30 times grinded). When GCC and MFC were mixed first, and then cationic starch was added, the characteristics of MFC and the change of electric charge which could be brought by cationic starch did not affect the flocculation size of GCC at all. The flocculation size obtained by the combination of cationic starch and MFC was smaller than those of cationic starch. These results show that flocculation behaviour could be controlled by the change of electric charge of suspension and the combination methods of cationic starch and MFC.
 Keywords
GCC;flocculation;cationic starch;electric charge;microfibrillated cellulose;
 Language
Korean
 Cited by
 References
1.
Lee, K.H. and Lee, H.L, Preflocculation of GCC with cationic pam and cationic starch And the influence of their dosage and shear rate on prefloc size, Journal of Korea TAPPI 38(4):1-9(2006).

2.
Im, W.H., Oh, K.D., Jeong, Y.B., Youn, H.J. and Lee, H.L., Effects of preflocculated filler flocs and nano-sized coating binder on fold cracking of coated paper, Journal of Korea TAPPI 47(5):91-97(2015).

3.
Cho, B.U., Kim, H.J. and Won, J.M., Production of high loaded paper by dual flow Additions of fillers. (I) Effects of filler addition at thick stock on paper properties and papermaking process, Journal of Korea TAPPI 43(4):23-30(2011).

4.
Cho, B.K. and Won, J.M., Behavior of PCC during loading at high consistency pulp slurry, Journal of Korea TAPPI 43(5):43-48(2011).

5.
Won, J.M., Cho, B.K. and Lee, Y.K., Effects of PCC loading at thick stock on the paper Properties, Journal of Korea TAPPI 44(4):62-68(2012).

6.
Choi, D.C., Won, J.M. and Cho, B.K., Production of high loaded paper by dual flow addition of fillers. (II) Effect of location of starch addition, Journal of Korea TAPPI 47(1):84-92(2015).

7.
Lee, K.S., Kim, C.K., Lee, J.H., Lee, T.J. and Ryu, J.Y., Studies on application of spray of nano-fibrillated cellulose to Papermaking process, Journal of Korea TAPPI 47(4):5-12(2015).

8.
Ahn, E.B., Hong, S.B., Kim, K.J. and Eom, T.J., Micro-fibrillated cellulose preparation with enzyme beating Pretreatment and effect on paper strength improvement, Journal of Korea TAPPI 47(6):57-65(2015).