Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

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

Utilization of Kenaf Cultivated in Korea (II) - Physical properties of kenaf TMP and KP -

국내산 Kenaf 이용에 관한 연구 (제2보) - Kenaf TMP와 KP의 물리적 성질 -

  • Lee, Myoung-Ku (Dept. of Paper Science & Engineering, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Yoon, Seung-Lak (Dept. of Interior Materials Engineering, Jinju National University)
  • 이명구 (강원대학교 산림환경과학대학 제지공학과) ;
  • 윤승락 (진주산업대학교 인테리어재료공학과)
  • Published : 2007.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

Whole, bast and core fibers of kenaf cultivar Tainung-2 were pulped under different pulping methods, thermomechanical and kraft pulping methods. The physical and optical properties of kenaf TMP(thermomechanical pulp) and KP(kraft pulp) handsheets were investigated and the results from the study are summarized as follows: Yields of TMP and KP were $77{\sim}87%\;and\;43{\sim}52%$, respectively. There was no significant change in apparent density between kenaf KP and USKP(unbleached softwood kraft pulp) but TMP showed a little lower apparent density. Bast pulp had the lowest apparent density regardless of pulping methods. Tensile strength of kenaf KP was higher than that of TMP but similar to that of USKP. Both TMP and KP handsheets of bast fraction showed the highest tear strengths among whole, bast, and core fractions. Core fraction showed the lowest tear strengths under different pulping methods. In general burst strength of kenaf pulp under different pulping methods was lower than that of USKP, and kenaf pulp had better stiffness than USKP. Brightness of kenaf KP and TMP was higher than that of USKP. There was no significant variation in opacity between kenaf pulp and USKP even though kenaf pulp showed a little lower opacity. The main difference in paper quality between the core fiber and bast fiber is derived from the fact that bast fiber is long and thin, whereas core fiber is short and thick.

Keywords

References

  1. Andrew, F. K., Kenaf an alternate fiber for the pulp and paper industries in developing and developed countries, TAPPI J. 75(10):141-145(1992)
  2. Niesch1ag, H. J., Nelson, G. H., Wolff, I. A., and Perdue, R. E. Jr., A search for new fiber crops. TAPPI J. 43(3): 193-200(1960)
  3. Bowyer, J. L., Economic and environmental comparisons of kenaf growth versus plantation grown softwood and hardwood for pulp and paper, Kenaf properties, processing and products, pp.323-346(1999)
  4. Clark, T. F., Cunningham, R. L., and Wolff, I. A., A search for new fiber crops, TAPPI J. 54(1):63-65 (1971)
  5. Hovermale, C. H., Effect of row width and nitrogen rate on biomass yield of kenaf, Proc. Fourth Int. Kenaf Crop., Int. Kenaf Assoc. Ladonia, TX:35-40 (1993)
  6. Morimoto, M. K., Eco-pulping of kenaf fiber, J. Japan TAPPI, 45(5):49-53(2002)
  7. Tanaka, N., Kuraye, T., Kayanuma, H., and Yokoyama, H., Use and research of kenaf as a papermakingmateral, Annals of the High Performance Paper Society, 33:48-54(1994)
  8. Morimoto, M. K., Utilization of non wood plant fibers for pulping-The status quo and future, J. Japan TAPPI, 51(6):65-84(1997)
  9. Rogerm, R., and Han, James. S., Change in kenaf properties and chemistry and a function of growing time, Kenaf properties, processing and products, pp.33-41 (1999)
  10. Bagby, M. O., Kenaf, a practical fiber resources. TAPPI Nonwood plant fiber pulping. Progress Report: 75-80(1977)
  11. Pearson, J. A. and S. Bonvicini, Commercial applications of kenaf in petrochemical industries, Environmentally responsible solutions, Kenaf properties, processing and products, pp.435-443(1999)
  12. Cleveland, T. G., Rixey, W. G., Tiller, F. M., Varghese, B. K., and Liu, H., Kenaf as an absorbent, a body-feed filter aid, and coalescence aid, Kenaf properties, processing and products, pp. 455-470 (1999)
  13. Kaldor, A. F., Karlgren, C., and Verwest, H., Kenaf a fast growing fiber source for papermaking, TAPPI J. 73(11):205-209(1990)
  14. Lee, M. K., and Yoon, S. L., Utilization of kenaf cultivated in Korea(I), J. Korea TAPPI 35(4):68-74 (2003)
  15. Ohtani, Y., Mazumder, B. B., and Sameshima, K., Influence of the chemical composition of kenaf bast and core on the alkaline pulping response, J Wood Sci. 47:30-35(2001) https://doi.org/10.1007/BF00776642
  16. Yoon, S. L, and Kojima, Y., The Beating properties of high yield pulp treated ozone(Part 1) -Fiber length distribution of ozonenation pulp for beating-. Mokchae Konhak 25(2):75-80(1997)
  17. Sabharwal H. S., Akhter M., Blanchette R. A. and Young R. A., Refiner mechanical and biomechanical pulping of just. Holzforschung 49(6):537-544(1995) https://doi.org/10.1515/hfsg.1995.49.6.537
  18. Yoon, S. L. and Kojima Y., Relationships between the ligni distribution on the high yield pulp fiber and the physical properties. J. Korea TAPPI 25(1):34-41 (1993)