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Unbleached (UN), oxygen-delignified and fully-bleached (FB) birch fibers with a residual lignin content of ca. 3, 2 and <1 %, respectively, were used to produce nanofibrillated cellulose (NFC) and nanopaper by using an overpressure device. The tensile index, elongation and elastic modulus of nanopaper were compared and the effect of residual cell wall components accessed. Under similar manufacturing...
The forces between xylan-coated mica surfaces at pH 10 have been studied using the interferometric surface force apparatus. Xylan is a polysaccharide that is composed of (1,4)-linked β-D-xylopyranose units, which are partially substituted at C2 with 4-O-methyl-α-D-glucuronic acid units and at C3 with α-L-arabinosyl units. Two different xylans were studied, one with 0.5% and one with 9% of the segments...
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