Characterization of cellulose fibers using inverse gas chromatography

Surface Force Studies of Langmuir–Blodgett Cellulose Films

“…A lower value (0.86 1 literally since the exact value obtained is very sensitive to 10 020 J) was, as expected, obtained for the cellulose-water-the cutoff distance; however, it is in good agreement with cellulose system. the values (about 44-48 mN/m) obtained for the dispersive The volume fraction of water in the cellulose layer (x) in part of the surface interaction using inverse gas chromatogracontact with water can as a first approximation be estimated phy (42,43). from the refractive indices of pure cellulose (1.55), the celluThe van der Waals force for the asymmetric system cellulose layer in water as measured here (1.49) and water (1.33) lose-water-chitosan-coated mica was also calculated from using the simple additivity approach Eq.…”

Surface modification of lignocellulosic fibers using high-frequency ultrasound

“…Since RT lnðV N Þ varies linearly with aðc D l Þ 1=2 , c s D can be determined from the slope of the plot of RT lnðV N Þ versus aðc D l Þ 1=2 . This method of determining c s D has been criticized because of uncertainties associated with changes in the surface area of the adsorbate due to interaction with the adsorbent (Felix and Gatenholm 1993). Given this, a second calculation was performed using the semi-empirical equation of Dorris and Gray (Kamdem et al 1993;Liu et al 1998;Colom et al 2003).…”

“…The net retention volume V N is related to the retention time by: (Felix and Gatenholm 1993;Kamdem et al 1993;Jacob and Berg 1994;Kazayawoko et al 1997;Liu et al 1998;Dutschk et al 2001)…”

Inverse gas chromatography analysis of spruce fibers with different lignin content

“…Inverse gas chromatography has been used by several authors for studying different types of papermaking fibers like unbleached and bleached hardwood and softwood chemical pulp fibers (Abdmziem et al 2006;Belgacem 2000;Carvalho et al 2005a;Carvalho et al 2005b;Felix and Gatenholm 1993;Jacob and Berg 1994;Shen et al 1998;Shen and Parker 1999), chemi-thermomechanical pulp fibers (Jacob and Berg 1994;Börås et al 1997, Kamdem andRiedl 1991) and thermomechanical pulp fibers (Dorris and Gray 1980). Various samples used as reference material for pure cellulose, like cotton fibers (Shen and Parker 1999;Dorris and Gray 1980;Buschle-Diller et al 2005), microcrystalline cellulose (Abdmziem et al 2006;Jacob and Berg 1994;Belgacem et al 1996) and a powder of hardwood a-cellulose fibers (Belgacem et al 1995) were also extensively examined.…”