Cotton print cloth

New Orleans study (13) Cotton print-cloth, bleached Direct Oct.-April 6 mo 29... 

Figure 2. Strength of cotton print cloth after immersion in sulfuric acid for 30 min at room temperature as a function of acid concentration...

Figure 4. Strength of cotton print clothes thermally degraded by heating at 168°C for various times. The strength of fabrics degraded by hydrolyzing 16 hr in 40% sulfuric acid at room temperature and by high-voltage electron irradiation at doses of 50 and 100 Mrad are also indicated.

Figure 5. Reflectance as a function of wavelength of undegraded contemporary cotton print cloth before and after Turnbulls Blue test for...

Figure 9. Relationship between relative concentrations of carboxyl groups as measured by Turnbull9s Blue test and the tensile strength of degraded cotton print cloth...

Figure 1. The tensile strength of degraded cotton print cloth (50-Mrad dose) after application of various acrylic resins (A1-A4) and grafted monomers (M1-M4) U = untreated fabric, PE = polyethylene, AD — air dried. See text for identification of resins and monomers.

Cotton Print Cloth Degraded by Electron Irradiation... 

Substrates. The fabric substrates consisted of a standard 80 X 80 count (nominal) 3.5 oz/yd2 cotton print cloth, machine washed in a 0.1% solution of Triton X-100 this fabric exposed to 50-, 100-, or 150-Mrad doses of high energy electrons as described in Part I of this series (2) or this fabric degraded by hydrolysis in 5N HC1 at room temperature for 5.5 h. These degraded model fabrics were selected because their properties were sufficiently similar to those of archeological samples and because they could be prepared readily in large quantities. 

Applications of Monomers to Cotton Print Cloth Strength ... 

Table III. Add-on and Strength of Cotton Print Cloth Degraded by Exposure to 100 Mr ad of Ionizing Radiation and Treated with Cotton Fibrils and Resins...

Samples and duplicate samples of unbleached desized cotton print cloth (400 V test fabrics), 80 X 80 count, 3.5 oz/yd2, and yarn size of 40 singles in warp and weft, were randomly selected after conditioning to 55% rh in a desiccator over potassium dichromate solution. The samples were placed inside the pharmacy bottles along the flat sides so that each bottle contained one sample and one duplicate. When the samples were placed side by side along the flat side of the bottle chambers, they filled the entire flat-sided area. Dark chambers were achieved by wrapping the bottles in aluminum foil to exclude light. 

Fabric. The fabric used in this work was a plain weave, 80 X 80 cotton print cloth weighing about 100 g/m2 (Testfabrics, No. 400). The fabric was twice laundered and dried according to the American Association of Textile Chemists and Colorists (AATCC) Test Method No. 124-1978. 

Figure 1. Strength of cotton print cloth pretreated with Ca(OH), or water as a function of time of heating at 1W°C and 100% R.H.

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