Investigation of Layering Treatment Effect at Different Conductivity Levels on Paper Properties

Document Type : Research Paper

Authors

1 Assistant Professor. Department of Cellulose and Paper Technology, Faculty of New Technologies and Energy, Shahid Beheshti University, Zirab, Iran.

2 Associate Professor, Department of Wood and Paper Science & Technology, University of Tehran, I.R. Iran.

3 Professor, Department of Wood and Paper Science & Technology, University of Tehran, I.R. Iran

4 Assistant Professor, Faculty of Natural Resource and Marine Sciences, University of Tarbiat Modares, Noor, I.R. Iran

5 Associate Professor, Pulp and Paper Technology, Asian Institute of Technology, Thailand.

Abstract

Surface properties of cellulosic fibers can be modified by Layer-by-Layer (LbL) technique. Different factors influence the performance of LbL technique. The properties of pulp fiber suspension i.e., conductivity of the fiber suspension are of such factors, affect the results of the LbL process. In this study, the physical and mechanical properties of handsheet with basis weight of 60g/m2, made from LbL-treated recycled OCC fibers at various salt concentrations with biopolymers cationic and anionic starches evaluated. The results showed that apparent density and formation quality of handsheets made of LbL-treated recycled fibers were improved significantly, while there was no obvious change for paper roughness. Bonding ability indexes including tensile index and Scott bond were also increased significantly. Moreover, the variation of conductivity showed a dual effect on the electrochemical properties of OCC fiber surface and starch absorption. The salt concentration of 0.001M NaCl with 140µS/cm conductivity was the optimum condition for layering.

Keywords

References

[1]. Wagberg, L., Forsberg, S., Johansson, A., and Juntti, P. (2002). Engineering of fiber surface properties by application of the polyelectrolyte multilayer concept, Part1: Modification of paper strength. Journal of Pulp and Paper Science, 28(7): 222-228.
[2]. Decher, G., Hong, J.D., and Schmitt, J. (1992). Build up of ultrathin multilayer films by a self-assembly process. III: Consecutively alternating adsorption of anionic and cationic polyelectrolyte on charged surface. Thin Solid Film. 210/211: 831-835.
[3]. Ryu, J. (2009). Investigation of the effect of electrochemical properties of multilayered fibers on the sheet properties and the phenomenon of adsorption of polyelectrolytes onto pulp fiber in LbL (Layer-by-Layer) multilayering, Master thesis, Seoul National University, Korea.
[4]. Hubbe, M. (2006). Bonding between cellulosic fibers in the absence and presence of dry-strength agent- A review. BioResource, 1(2): 281-318.
[5]. Wistrand, I., Lingstrom, R., and Wagberg, L. (2007). Preparation of electrically conducting cellulose fibers utilizing polyelectrolyte multilayers of poly (3,4-ethylenedioxythiophene):poly (styrene sulphonate) and poly (allyl amine). European Polymer Journal, 43 (1): 4075-4091.
[6]. Youn, H.J., Chin, S.M., Ryu, J.H., and Kwon, H.S. (2007). Basic study on electrochemical properties of multilayered pulp fibers with polyelectrolytes. Journal of Korea TAPPI, 39(4):53-60.
[7]. Steeg, H.G.M., Cohen Stuart, M. A., de Keizer, A., and Bijsterbosch, B.H. (1992). Polyelectrolyte adsorption: A subtle balance of forces. Langmuir, 8(10): 2538-2546.
[8]. Wang, F., and Martin, H. (2002). Charge properties of fibers in the paper mill environment. 1. Effect of electrical conductivity. Journal of Pulp and Paper Science, 28(10): 347-353.
[9]. Lundstrom, H.L., Johansson, E., and Wagberg, L. (2010). Polyelectrolyte multilayers from cationic and anionic starch: Influence of charge density and salt concentration on the properties of the adsorbed layers. Starch/Starke, 62(2): 102-114.
[10]. Vermohlen, K., Lewandowski, H., Narres, H.-D., and Schwuger, M.J. (2000). Adsorption of Polyelectrolytes onto oxides- the influence of ionic strength, molar mass, and Ca2+ ions. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 163 (1): 45-53.
[11]. Herrington, T., and Midmore, B. (1992). Adsorption of ions at the cellulose/aqueous electrolyte interface. Part 1.Charge/pH isotherns. Journal of the Chemical Society, Faraday Transactions, 1. 180(6): 1525-1537.
[12]. Lloyd, J., and Horne, C. (1992). The determination of fiber charge and acidic groups of radiate pine pulps. Nordic Pulp Paper Research Journal, 8(1): 48-57.
[13]. Lindstrom, T., and Wagberg, L. (1983). Effects of pH and electrolyte concentration on the adsorption of cationic polyacrylamides on cellulose. Tappi Journal. 66(6): 83-85.
[14]. Larsson, A., and Staffan, W. (1998). Flocculation of cationic amylopectin starch and colloidal silicic acid. The effect of various salt. Colloidals and Surfaces, 139(2): 259-270.
[15]. Page, D.H. (1969). Theory for the tensile strength of paper. Tappi Journal, 52(4): 674-681.
[16]. Xing, Q., Eadula, S. R., and Lvov, Y. M. (2007). Cellulose fiber-enzyme composites fabricated through Layer-by-Layer nanoassembly. Biomacromolecules, 8(6): 1987-1991.
[17]. Kaubaa, A., and Zoltan, K. (1994). Measure of the internal bond strength of paper/board. Tappi Journal, 78(3): 103-111.
[18]. Lim, W.J., Liang, Y.T., and Seib, P.A. (1991). Cationic oat starch: preparation and effect on paper strength. Cereal Chemistry, 69(3): 237-239.
[19]. Johansson, E., Lundstrom, L., Norgren, M., and Wagberg, L. (2009). Adsorption behavior and adhesive properties of biopolyelectrolyte multilayers formed from cationic and anionic starch. Biomacromolecules, 10(7): 1768–1776.
Forest and Wood Products
Volume 66, Issue 3 - Serial Number 3
October 2013
Pages 305-317

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