A novel method is developed for imparting durable water repellency to cotton cellulosic fabrics based on ionic interactions. Most of the traditional water repellent finishing chemicals such as paraffin waxes, pyridinium compounds, formaldehyde based N-methylol crosslinkers, siloxanes and fluoro-carbon polymers are either non-durable to washing or environmentally unsafe or expensive. Our method includes cationization of cotton fabric with 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CHTAC) followed by subsequent treatment with a salt of stearic acid to form ionic attractions between cationic groups of cationized cotton fabric and anionic groups of stearate anion. These ionic interactions hold the stearate or hydrophobic molecules on the surface of cotton fabric outwards giving durable water repellency without releasing any hazardous chemicals present in almost all other durable water repellent treatments for textiles.
| Identifer | oai:union.ndltd.org:NCSU/oai:NCSU:etd-06062008-145319 |
| Date | 16 June 2008 |
| Creators | Goli, Kiran Kumar |
| Contributors | Dr. David Hinks, Dr. Richard Spontak, Dr. Peter Hauser |
| Publisher | NCSU |
| Source Sets | North Carolina State University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://www.lib.ncsu.edu/theses/available/etd-06062008-145319/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dis sertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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