Abstract
The incorporation of sucrose or some other disaccharides (cellobiose, α-lactose or trehalose) into the cell wall of pulp fibers increases the tearing resistance of the resultant sugar-containing paper relative to that of its sugar-free counterpart, but only when the fiber is well-refined. Maltose and β-lactose do not exhibit this effect. By the use of a high cellulose pulp the increase is shown not to be due to the presence of hemicelluloses. Differential scanning calorimetry indicates that the interaction between the sucrose molecules and the cellulosic fibers changes and becomes more uniform as the fibers are refined. Although the azo dye Congo red bonds strongly with cellulose the analogous reaction with disaccharides and cyclodextrins, established spectrophotometrically, could not be used to predict the physical outcome of the interactions with added disaccharides or cyclodextrins. From a consideration of the stereochemistry of the impregnant disaccharides the augmentation of the fiber strength is attributed to the interlamellar hydrogen bonding of impregnant molecules having hydroxy endgroups in the cis conformation and separated by about 10Å. The incorporation of cyclodextrins further demonstrates that the conformation and the separation distance between the OH groups located in the interlamellar sugar molecule play an important role in strengthening the sugar-impregnated fiber and in augmenting the tearing resistance of sugar-containing papers.
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References
Allan GG,Laine JE,Sloan T. 1980 Modification of the refining process by additives, particularly Congo red. In Proc. Inter. Symp. Fundamental Concepts of Refining. Sept. 16-18, Appleton, WI: The Inst. of Paper Chemistry, 237-251.
Allan GG,Stoyanov AP,Ueda M,Yahiaoui A. 1999 Sugar-cellulose composites I. The incorporation of simple saccharides into paper as cellulose substitutes. Tappi J 82(3), 167-173.
Allan GG,Stoyanov AP,Ueda M,Yahiaoui A. 1999 Sugar-cellulose composites II. The properties of paper containing monosaccharides. Tappi J 82(4), 196-202.
Allan GG,Stoyanov AP,Ueda M,Yahiaoui A. 1999 Sugar-cellulose composites III. The incorporation of sucrose into paper as a cellulose substitutes. Tappi J. 82(5), 165-171.
Allan GG,Stoyanov AP,Ueda M,Yahiaoui A. 2001 Sugar-cellulose composites IV. The incorporation of disaccharides into paper as fiber substitutes. Cell Chem Tech 35, (in press).
Atwood JL,Davies JED,MacNicol DD. 1984 Inclusion Compounds. Vol. II, New York, NY: Academic Press; 231 p.
Gordon PF,Gregory P. 1983 Organic Chemistry in Color. Berlin: Springer-Verlag; 271 p.
Manley R,St J. 1974 Gel-permeation chromatographic studies of cellulose degradation III. Methanolysis of cellulose. J Poly Sci Poly Phys Ed 12(7), 1347-1354.
Mark RE. 1967 Cell Wall Mechanics of Tracheids. New Haven, CT: Yale University Press; 59 p.
Preston RD. 1974 The Physical Biology of Plant Cell Walls. London, UK: Chapman and Hall; 135 p.
Roger HJ. 1968 Cell Walls and Membranes. London, UK: E. and F.N. Spon; 97 p.
Szejtli J. 1988 Cyclodextrin Technology. Boston, MA: Kluwer Academic Publishers; 4 p.
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Allan, G.G., Stoyanov, A.P., Ueda, M. et al. Sugar-cellulose composites V. The mechanism of fiber strengthening by cell wall incorporation of sugars. Cellulose 8, 127–138 (2001). https://doi.org/10.1023/A:1016714329976
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DOI: https://doi.org/10.1023/A:1016714329976