Abstract
The suitability of carboxymethyl guar derivatives as thickeners in reactive printing of viscose fabrics is investigated. We show the influence of different guar thickeners on the stiffness of viscose fabric printed with monoreactive vinylsulphone dyes. The conse quences of interactions that are proportional to the bending rigidity of prints are confirmed with the quantity of residual add-on and with IR spectroscopy. The interactions depend on the macromolecular structure of the guar thickener, its degree of polydispersity, and the number of free reactive OH groups able to react with guar molecules. We conclude that higher bending rigidity is the result of physicochemical binding of guar molecules on the viscose fibers by means of hydrogen and/or ether bonds by free OH groups. Hydroxyl groups of monoreactive dyes also increase bending rigidity as a result of chemical interaction with the OH groups of guar and viscose.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.