the fabric was dried for 3 minutes at 90 u00b0 c then treated for 5 minutes at 190 u00b0 c washed with copious quantities of water and dried the dry weight gain for the fabric was 19 5 g of a polyester fabric with a weight of 100 g m 2 was impregnated with the aid of a mangle with an aqueous solution containing u03b2 cyclodextrin 100 g l citric acid 100 g l and sodium hydrogen phosphate 12 hydrate 30 g l the take up was 32 the fabric was dried for 3 minutes at 90 u00b0 c then treated for 5 minutes at 190 u00b0 c washed with copious quantities of water and dried the dry weight gain for the fabric was 6 5 g of a polyacrylonitrile knitted fabric with a weight of 300 g m 2 was impregnated with the aid of a mangle with an aqueous solution containing u03b2 cyclodextrin 100 g l citric acid 100 g l and sodium hydrogen phosphate 12 hydrate 30 g l the take up was 90 the fabric was dried for 7 minutes at 90 u00b0 c then treated for 5 minutes at 180 u00b0 c washed with copious quantities of water and dried the dry weight gain for the fabric was 8 this example illustrates the adsorbent properties of fabrics functionalized with u03b2 cyclodextrin using the process of the invention cyclodextrins are known to be capable of forming inclusion complexes with phenolphthalein six samples of fabric functionalized with u03b2 cyclodextrin using the process of.