Professor Chris Carr.
School of Materials
Tel.: 0161 306 4131
Related Web pages:
Surface modification of textiles.
Surface modification of textiles, by elemental fluorine [1,2]to improve their wettability, adhesion and printability.
The use of fluorine-based chemicals in organic syntheses and the application of fluorochemical based oil/water repellent agents to polymer substrates is widespread. However, it is only in recent years that the use of fluorine gas has become commercially accepted in manufacturing industry. Automotive body parts (Mercedes and VW), water filters, heavy-duty battery components, screwdrivers etc. are now routinely processed by industry. Most of these applications are based on polypropylene or other polymeric substrates and the purpose of the fluorine is to modify the material’s surface and impart better wettability/adhesion properties. Preliminary studies at UMIST have focused on wool and nylon and have resulted in patent applications covering machine washability, coating and coloration.
Future work, in conjunction with Dr J Methven, of polymer engineering, the fluorination of reinforcing fibres (polyester, polyamide, polypropylene, jute, hemp and flex) in composites will be investigated and their subsequent interactions with thermosetting and thermoplastic matrices will be studied. The modification of natural and synthetic textile fibres and surfaces, and the influence of fluorination in improving dyeing/printing, machine washability, oil/water repellency, filtration and anti-static properties will be investigated. The effect of fluorination of polymer granules and its influence on the end-use properties of incorporating the modified, fluorinated polymer into the final extruded melt will be determined.
1. C M Carr, K J Dodd, K Byrne J Soc. Dyers and Col., 1994, 63.
2. B Kidd, C M Carr, K J Dodd, J C Vickerman Text. Res. J., 1994, 504.