“Colorfastness to Perspiration” (AATCC-15 & ISO-105)
SUBMITTED BY: TAUQEER RAZA (06-NTU-97) 8TH SEMESTER SECTION “D” SUBMITTED TO: MR. SALMAN ALI SB
GARMENTS MANUFACTURING DEPARTMENT NATIONAL TEXTILE UNIVERSITY FAISLABAD
“Colorfastness to Perspiration” Introduction: This test method is used to determine the fastness of colored textiles to the effects of acid perspiration. It is applicable to dyed, printed or otherwise colored textile fibers, yarns and fabrics of all kinds and to the testing of dyestuffs as applied to textiles.
Principle: A specimen of colored textile in contact with other fiber materials (for color transfer) is wet out in simulated acid perspiration solution, subjected to a fixed mechanical pressure and allowed to dry slowly at a slightly elevated temperature. After conditioning, the specimen is evaluated for color change and the other fiber materials are evaluated for color transfer.
Apparatus and reagents: Perspiration tester, Specimens measuring 40 mm x 100 mm, one dyed and two bleached. Oven, maintained at 37 oC ± 2 o C. 0.5 g of l-histidine monohydrochloride monohydrate (C6H9O2N3.HCI..H20); 5 g of sodium chloride (NaCl) 5 g of disodium hydrogen orthophosphate dodecahydrate (Na2HPO4.12H2O).
Procedure: The composite specimen laid out smooth in a flat-bottomed dish and cover with the solution. One composite specimen is thoroughly wet in the alkaline solution at pH 8 at a liquor ratio of 50: 1, and allowed it to remain in the solution at room temperature for 30 min. It is pressed and moved from time to time to ensure good and uniform penetration of the liquor. The solution is pour off and wipes the excess liquor off the specimen between two glass rods. The composite specimen is placed between two glass or acrylic resin plates, under a pressure of 12.5 kPa. Separate apparatus is used for the acid test. Tester is placed in oven containing composite specimen in the oven for 4 h at 37 o C ± 2 o C. Each composite specimen is opened out and dried it by hanging it in air at a temperature not exceeding 60 o C, with the two or three parts in contact only at the line of stitching. Assess the change in color of each specimen and the staining of the adjacent fabric(s) with the grey scales.
