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New thickening agents for reactive printing of cellulosic fabrics
Author(s) -
Ibrahim N. A.,
AboShosha M. H.,
ElZairy E. Allam M. R.,
ElZairy E. M.
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.23689
Subject(s) - thickening agent , steaming , acrylic acid , polymer chemistry , materials science , viscosity , chemical engineering , urea , nuclear chemistry , chemistry , polyacrylic acid , polymer science , composite material , thickening , polymer , organic chemistry , copolymer , food science , engineering
Four adducts were prepared by polymerizing acrylic acid (AA) in presence of either a pyrodextrin (D) or gum Arabic (GA), and termed as PAA/D 1 , PAA/D 2, PAA/GA 1, and PAA/GA 2 . These adducts were utilized as thickeners in reactive printing of cotton fabric in comparison with Na‐Alginate. Printing was carried out at different conditions including: NaHCO 3 concentration (0–40 g/K), urea concentration (0–200 g/k), steaming temperature (100–130°C) and time (5–35 min). At optimal NaHCO 3 concentration (30 g/K) the depth of shade of the prints, expressed as K/S values, depended on the nature of the thickener used, and followed the descending order PAA/D 2 > PAA/GA 1 > Na‐Alginate ≫PAA/D 1 ≥ PAA/GA 2 . Accordingly, PAA/D 1 and PAA/GA 2 were omitted in subsequent trials. Optimal printing conditions were found to be NaHCO 3 concentration (30 g/K), urea concentration (100 g/k), steaming temperature (110°C), and time (15 min). The apparent viscosity of a printing paste, as well as both of K/S value and fastness properties of a print were governed by the nature of the reactive dye and type of thickener. Storing of a printing paste up to 7 days resulted in a decrease in its apparent viscosity along with a slight reduction in K/S value and a little variation in some fastness properties of prints. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 4430–4439, 2006