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

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

건조수축 해석을 통한 종이의 벌크 및 강직성 향상

Improvement of Paper Bulk and Stiffness by Using Drying Shrinkage Analysis

  • 이진호 (한국화학연구원 산업바이오화학연구센터) ;
  • 박종문 (충북대학교 농업생명환경대학 임산공학과)
  • Lee, Jin-Ho (Korea Research Institute of Chemical Technology, Chemical Biotechnology Research Center) ;
  • Park, Jong-Moon (Chungbuk National University, College of Agriculture, Life & Environment Science, Department of Forest Products & Engineering)
  • 투고 : 2011.11.16
  • 심사 : 2011.12.12
  • 발행 : 2011.12.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The maximum drying shrinkage velocity was proposed to verify bulk and stiffness improvement mechanism during drying according to papermaking parameters. It was based on the wet-web shrinkage behavior without the restraint of wet-web during drying, so intact drying impact could be measured. Bulking agent reduced the drying shrinkage and the maximum drying shrinkage velocity, so paper bulk increased and paper strength decreased. When adding cationic starch to stock with the bulking agent for strengthening, the bulk was increased further with additional decreasing of the drying shrinkage and the maximum drying shrinkage velocity. Paper strength also increased except tensile stiffness index with decreasing the drying shrinkage and the maximum drying shrinkage velocity. When using additional strength additives for strengthening of fiber interfaces extended by bulking agent and cationic starch, amphoteric strength additive increased paper stiffness without loss of paper bulk. It was considered that the added amphoteric strength additives were cross-linked to the stretched cationic starch and this cross-linking increased elasticity of fiber-polymer-fiber interfaces without changing the drying behavior. Paper bulk could be increased with decreasing the maximum drying shrinkage velocity. The drying shrinkage of paper also could be controlled by fiber-to-fiber bonding interfaces by the bulking agent. In this case, paper strength including stiffness was decreased by reducing fiber-to-fiber bonding but it could be improved by strengthening fiber-to-fiber interfaces with polymer complex without loss of bulk.

키워드

참고문헌

  1. Giertz, H. W., Contribution to the theory of tensile strength, 1964 EUCEPA/European TAPPI Conference Proceedings on Beating, EUCEPA, Venice, Italy, pp. 39-47.
  2. Giertz, H. W. and Rodland, G., Elongation of segments-bonds in the secondary regime of the load/elongation curve, 1979 International Paper Physics Conference Proceedings, CPPA, Harrison Hot Springs, Montreal, Canada, pp. 129-136.
  3. Lobben, T. H., The tensile stiffness of paper, Part 1, A model based on activation, Norsk Skogindustri 29(12):311-315 (1975).
  4. Retulainen, E., The Role of Fiber Bonding in Paper Properties, Laboratory of Paper Technology, Reports, Series A 7, Helsinki University of Technology, Espoo, p. 63 (1997).
  5. Tanaka, A., Hiltunen, E., Kettunen, H., and Niskanen, K., Inter-fiber bonding effects of beating, starch or fillers, Nordic Pulp and Paper Research J., 16(4): 306-312 (2001). https://doi.org/10.3183/NPPRJ-2001-16-04-p306-312
  6. Htun, M., The Influence of Drying Strategies on the Mechanical Properties of Paper, Doctoral Thesis, Royal Institute of Technology, Stockholm, p. 31 (1980).
  7. Htun, M., and Ruvo, A. D., Relation between drying stresses and internal stresses and the mechanical properties of paper, In Fiber-Water Interactions in Papermaking, 1977 Trans. Symp. Oxford, , Tech. Div., British Paper and Board Industry Federation, London, pp. 477-487.
  8. Walstrom, T., Lundh, A., Hansson, T. and Fellers, C., Biaxial straining of handsheets during drying-effect on delamination resistance, Nordic Pulp Paper Research J. 15(3):237-242 (2000). https://doi.org/10.3183/NPPRJ-2000-15-03-p237-242
  9. Zhang, G., Niskanen, K., Laine, J. E., and Paulapuro, H., Effect of relaxation during drying on the final sheet properties, Appita J. 54(2):126-130 (2001).
  10. Walstrom, T, Influence of Shrinkage and Stretch during Drying on Paper Properties, Licentiate Thesis, Royal Institute of Technology, Department of Pulp and Paper Chemistry and Technology, Division of Paper Technology, Stockholm, Sweden, 1999.
  11. Niskanen, K., Strength and fracture of paper, In Products of Papermaking, Vol. 2, Baker, C. F. (ed.), Transactions of the 10th Fundamental Research Symposium, Oxford, Pira International, UK, pp. 641-725 (1993).
  12. Vainio, A., and Paulapuro, H., Interfber bonding and fiber segment activation in paper, BioResources 2(3):442-458 (2007).
  13. Kubat, J., A Similarity in the Stress Relaxation Behaviour of High Polymers and Metals, Ph. D. Thesis, University of Stockholm, Sweden (1965).
  14. Htun, M., and Ruvo. A. D, Correlation between the drying stress and the internal stress in paper, Tappi J. 61(6):75-77 (1978).
  15. Htun, M., and Ruvo, A. D., The influence of drying strategies on the relationship between drying shrinkage and strain to failure of paper, In Role of Fundamental Research in Papermaking, Mechanical Engineering Publications, Ltd., London, p. 385 (1983).
  16. Htun, M., and Fellers, C., The control of mechanical properties by drying restraints, In Paper Structure and Properties, Bristow, A. J., and Kolseth, P. (ed.), Marcel Dekker, New York, pp. 311-326 (1986).
  17. Htun, M., Hasson, T., and Fellers. C., STFI Publication No. D 281, STFI, Stockholm, p. 18 (1987).
  18. 이진호, 건조 수축 해석을 통한 종이의 건조 스트레스평가와 벌크 및 강직성 향상 기작 규명, 2011년 농학박사학위논문, 충북대학교 (2011).
  19. Ivarsson, B. W., Introduction of stress into a paper sheet during drying, Tappi J. 37(12):634 (1954).
  20. Kim, C. Y., Page, D. H., El-Hosseiny, F, and Lancaster, A. P. S., The mechanical properties of single wood pulp fibers III, The effect of drying stress on strength, J. Appl. Polym. Sci. 19:1549-1562 (1975). https://doi.org/10.1002/app.1975.070190606
  21. Brecht, W., Gerspach, A., and Hildenbrand, W., Drying tensions, Their influence on some paper properties, Das Papier 10:454-458 (1956).
  22. Lyne, L. M., and Gallay, W., The effect of drying and heating on the swelling of cellulose fibres and paper strength, Tappi J. 33(9):429 (1950).
  23. Barkas, W. W., The swelling of wood under stress; A discussion of its hygroscopic, elastic and plastic properties, The Swedish Forest Products Research Lab. Report No. 61 (1950).
  24. Lindem, P. E., Paper surface properties versus stress during drying, TAPPI 1991 International Paper Physics Conference Proceedings, Vol. 1, TAPPI Press, Atlanta, p. 327 (1991).
  25. Kazumichi, A., and Akira, I., Effect of internal addition of fatty acid diamide salts on sheet properties, Nordic Pulp and Paper Research J. 18(2): 188-193 (2003). https://doi.org/10.3183/NPPRJ-2003-18-02-p188-193
  26. Fleer, G. J., and Scheutjens, J. M. H. M., Modeling polymer adsorption, steric stabilization and flocculation, Surfactant Science Series, 47:209 (1993).