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Carbohydr Polym. 2013 Nov 6;98(2):1532-9. doi: 10.1016/j.carbpol.2013.07.062. Epub 2013 Aug 6.

All-cellulose and all-wood composites by partial dissolution of cotton fabric and wood in ionic liquid.

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Department of Life and Environmental Sciences, Faculty of Engineering, Chiba Institute of Technology, Japan. Electronic address:


After cotton fabric (CF) and hinoki lumber (HL) were dipped in 1-butyl-3-methylimidazolium chloride (BMIMCl) at 100 °C, the BMIMCl-impregnated CF and HL were hot-pressed to give CF-BMIMCl and HL-BMIMCl composites, respectively. The BMIMCl contained in the composites was removed by Soxhlet extraction, and subsequently annealed to produce all-cellulose and all-wood composites (CF-A and HL-A). The SEM analyses revealed that cellulose fibers combined together for CF-A and the surface of HL-A became smooth, respectively. The XRD measurements indicated that the crystallinity index of cellulose component decreased by the hot press, increased by the extraction, and further increased by the annealing for both the composites. The tensile modulus of CF-A increased with increasing pressure of hot-press. Although tensile strength of HL-A was a little lower than that of original HL, tensile modulus of the former was much higher than that of the latter.


1-Butyl-3-methylimidazolium chloride; Cotton fabrics; Green composites; Hinoki; Ionic liquids; Wood

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