Erkennung und Trennung von Faserstoffen

Characterization of regenerated cellulose fibers antimicrobial functionalized by chitosan

“…17,25 This was verified using the iodine adsorption value (IAV) determination according to Schwertassek,26,27 Hessler and Power, 28 and Flath. 29 This value indicates a fiber's amorphous regions' amounts and therefore accessibility of the fibers.…”

Alkali Treatments of Woven Lyocell Fabrics

“…(Nelson et al, 1970;Schwertassek K., 1956;Široká et al, 2008;Strnad et al, 2001) This method has also been employed as a measure of fiber crystallinity. (Elesini U. S. & Cuden A. P., 2002;Hessler & Power, 1954;Zemljic et al, 2008) The computation of substrate crystallinity from iodine sorption value is based on the principle that iodine sorption in substrates is limited only to amorphous regions.…”

Physical Chemistry of Dyeing: State of Dye in Dyebath and in Substrate

“…173 The viscosity of aqueous solutions of polyvinyl alcohol increases on addition of CI Direct Red 28 201 and also the X-ray diagram of polymer is remarkably altered in presence of this dye, indicating interaction between the dye and the polymer. Schwertassek 205 observed that in the case of cellulose dyed with substantive or reactive dyes, the fiber substance adsorbed less iodine due to the hydroxyl groups in cellulose taking part in dye-fiber bonding. The presence of methyl cellulose or polyvinyl alcohol displaces the height and position of the maximum wavelength of light adsorption of several direct dyes and the extent of displacement has been found to depend on the forces of attraction between polymer and dye.…”