title: Effects of cationic xylan from annual plants on the mechanical properties of paper.
abstract: Xylan from oat spelt and wheat was used as an additive to enhance the dry strength of paper. The absorption of xylan by the cellulose fibers was increased by cationization to different degrees of substitution. Paper hand sheets with different doses of xylan and industrial cationic starch were produced, and the mechanical properties were determined. Absorption measurements of cationic oat spelt xylan on pulp fibers explained the differing influences of low and high cationized xylan addition on paper strength. The addition of cationic oat spelt xylan with a degree of substitution of 0.1 at a 4% dose provided the largest improvement in the tensile-index (67%), burst-index (105%) and tear-index (77%). Compared to cationic starch, cationic oat spelt xylan additives led to similar paper strength values, excepting the tear strength. The structural differences and protein impurities made the wheat xylan unsuitable as a strength additive for paper pulp.
authors: Johann Heinrich von Thünen-Institut (TI), Institute of Wood Research, Leuschnerstr. 91b, 21031 Hamburg, Germany.
authors: Alexander L
authors: AL
authors: Deutschle
authors: Thüringisches Institut für Textil-und Kunststoff-Forschung e.V. (TITK), Breitscheidstr. 97, D-07407 Rudolstadt, Germany.
authors: Katrin
authors: K
authors: Römhild
authors: Thüringisches Institut für Textil-und Kunststoff-Forschung e.V. (TITK), Breitscheidstr. 97, D-07407 Rudolstadt, Germany.
authors: Frank
authors: F
authors: Meister
authors: University of Hamburg, Department of Wood Science and Chemical Wood Technology, Leuschnerstr. 91b, 21031 Hamburg, Germany.
authors: Ron
authors: R
authors: Janzon
authors: University of Hamburg, Department of Wood Science and Chemical Wood Technology, Leuschnerstr. 91b, 21031 Hamburg, Germany.
authors: Christiane
authors: C
authors: Riegert
authors: University of Hamburg, Department of Wood Science and Chemical Wood Technology, Leuschnerstr. 91b, 21031 Hamburg, Germany. Electronic address: bodo.saake@ti.bund.de.
authors: Bodo
authors: B
authors: Saake
mesh_terms: D000042:Absorption; D002412:Cations; D010209:Paper; D013213:Starch / Q000737:chemistry; D013499:Surface Properties; D014990:Xylans / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D002412:Cations; D014990:Xylans; D013213:Starch
keywords: Cationic polymers; Oat spelt xylan; Paper strength additive; Wheat xylan; Xylan absorption