Multifiber fabric

Laboratory Treatments. Colorfastness of the dyed wool samples was determined in aqueous and nonaqueous media. Colored samples were cut into 2- X 2-in. squares and sandwiched between multifiber fabrics (Test Fabrics) and undyed wool fabrics of the same dimensions. The fabrics were loosely sewn together by hand with white cotton thread. Two surfactants were chosen for the aqueous treatments Tergitol NPX, a nonionic ethoxylated nonylphenol (Union Carbide) and Orvus WA, an anionic sodium alkyl sulfate (Proctor Gamble). Solutions of 0.1% surfactant in distilled water were prepared. Tests were run in 250-mL Erlenmeyer flasks at a liquor-to-cloth ratio of 50 1. The flasks were placed in an Eberbach constant-temperature shaker bath adjusted to 30 °C and an agitation of 40 cycles/min. Treatment time was 1 h, after which the samples were opened and allowed to dry on blotter paper. This same procedure was used for the nonaqueous treatments. Commercial grade tetrachloroethylene (R. R. Street Co.) with and without 1% Aerosol OT, the anionic surfactant sodium sulfosuccinate (Aldrich Chemical) was selected. The treated samples were removed from the liquids, opened, and dried on blotter paper in a ventilated hood. 

In this experiment several dyes will be synthesized and these and other dyes will be used to dye a representative group of natural and man-made fibers. You will receive several pieces of Multifiber Fabric 43, which has 13 strips of different fibers woven into it. 

Put a 1 cm wide strip of multifiber fabric in your dyebath as an internal control. 

Check the color fastness to washing of the zipper tape. The change in color of zipper tape and degree of staining of the multifiber fabric are to be checked using the AATCC gray scale. 

Color fastness Dyed trims are checked for color fastness. In this test, lace or tape samples are washed in a wash wheel along with multifiber fabrics for the number of cycles mentioned in the testing methods (AATCC or ASTM). If the white fabric becomes tinted with the trim s color, then the trims should not be used in production. 

Colorfastness to Perspiration. Two specimens of the dress fabric were basted to separate squares of multifiber test fabric squares, according to A.A.T.C.C. Test Method 15-1975. One was immersed in an acid solution and the other in an alkaline solution for 20 min each. After wetting, the specimens were blotted between paper toweling to absorb... 

Table II. Transfer of Color from Fabric to Multifiber Test Strip in Colorfastness to Washing and Colorfastness to Perspiration Tests (Evaluated Using Gray Scale for Staining)...

Perspiration tests similarly indicated the presence of two dyestuffs. In the alkali solution, the yellow color seemed to be removed almost completely, leaving a pink-colored fabric. In the acidic solution, the yellow dye migrated to the wool, silk, and nylon sections of the multifiber test strips, staining these fibers a bright yellow shade. The pink color seemed to bleed minimally a small amount of color was transferred in the alkali solution tests, but generally this pink color remained comparatively very fast. 

Our study is outlined in five parts, (a) Two polystyrene plastics were reinforced at different fiber contents alternately with polyester, asbestos, and glass fibers, (b) The mechanical/physical properties of the resultant monofiber-reinforced plastics were determined and compared, (c) Combinations of fibers were then used to fabricate multifiber-rein-forced structures to exploit simultaneously the particular advantages of the different reinforcements, (d) The effect of each fabrication stage on the molecular weight and molecular weight distribution of the matrix plastics was established and (e) a linear mathematical model was formulated to predict the properties of multifiber structures and forecasted values compared with corresponding values experimentally obtained from (c) above. 

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