Textile Finishing with Mct-ß-Cyclodextrin

Abstract

Monochlorotriazmyl-ßcyclodextrin (BETA W7 MCT) is a reactive cyclodextrin derivative that can be covalently fixed to nucleophilic substrates by a condensation reaction. This new type of surface modification means a permanent transfer of cyclodextrin properties to the treated materials.

An important application field of BETA W7 MCT is the textile finishing process. Analogues to reactive dyes the MCT-cyclodextrin can be fixed to the fabric by well known methods and with common equipment. Cellulosic fibres are most suitable for the MCT-CD modification. Detailed fixation parameters have been worked out for cotton, but also mixed fibre materials like cotton / polyurethan or cotton / polyamide can be finished with BETA W7 MCT in good yields. MCT-CD modified textiles can either absorb unpleasant odour by complexation of sweat components or release included guest substances like fragrances or pharmaceuticals over a long period of time.