Abstract
An investigation is reported in which samples of wool fabric were converted to the thiol, S-carboxymethyl, and S-aminoethyl forms by reduction with tributylphosphine and alkylation with either iodoacetate or bromoethylamine. The liquid retention of the samples was measured after immersion in aqueous solutions at 20°C under various conditions of pH and ionic strength. Plots of liquid retention against pH for the different samples are explained on the basis of the net charge on the sample at a given pH. Untreated wool has a liquid retention of 38–45% (w/w) throughout the pH range examined, whereas the treated wool samples all have maximum liquid retentions of more than 150% at pH values distant from their iso-electric points. Liquid retentions of less than 50% are observed at the iso-electric points of the various samples. The extent of liquid retention of reduced wools is shown, in most instances, to diminish with increasing ionic strength of solution. Wool fabrics in which a small fraction of the disulphide cross-links has been broken also show slightly increased liquid retention. The importance of cross-link breakdown and electrostatic-charge balance on swelling during wool processing is discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
