Rendering synthetic fabrics acid printable using chitosan and binder

In this study chitosan samples of different nature, prepared by hydrolysis with HCL and modification by reaction with dimethylaminobenzaldehyde in methanol were applied to acrylic and polyester fabrics by pad-dry-cure method in presence and absence of binder (acrylate based copolymer). The pretreated samples were printed with acid dye. The effect of acid hydrolysis, modification, and concentration of chitosan on the color strength of the prints was investigated. The printed fabrics were evaluated for color yield and fastness properties. The color strength of the prints in presence of binder was three times higher than in its absence. The enhancment in color strength was relies mainly on N% of chitosan. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008