Resin stripping of treated cotton fabric (removal of resin by acid hydrolysis) was investigated by measurements of textile properties, by viscometry, and by gel-permeation chromatography (GPC). Breaking strengths and elongations- at-break, which were reduced by treatment with dimethylolethyleneurea (DMEU), were partially restored by resin stripping. The acid-catalyzed treatment of the fabric with the substituted urea substantially reduced the degree of polymerization (DP) of the cotton cellulose; resin stripping further reduced the DP. The restoration of tensile properties which occurred even though DP had been reduced was due to removal of crosslinks which cause crosslink embrittlement.
Book ASTM Stand., American Society for Testing and Materials, Phitadelphia, Pa., Part 25, Method D 539-53 (1969), p. 102 ; Part 15, Method D 1716 62 (1969), pp. 579580.
2.
Cooke, T.F., Dunsenbury, J.H., Kienle, R.H., and Lineken, E.E., Mechanism of Imparting Wrinkle Recovery to Cellulosic Fabrics, Textile Res. J.24, 10151036 (1954).
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6.
Marx-Figini, M. and Schulz, G.V., Die viskometrische Molekularegewichtsbestimmung von Cellulosen und Cellulosenitraten unter Standardbedingungen, Makromol. Chem.54, 108-118 (1962).
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Newman, S., Loeh, L., and Conrad, C.M., Viscosity, Sedimentation, Diffusion, and Osmotic Behavior of Long-Chain Nitrocellulose Molecules, J. Polymer Sci.10, 463-487 (1953).
8.
Segal, L. and Timpa, J.D., Gel Permeation Chromatography and Cellulose. II. Application of Universal Calihration, J. Polymer Sci. A-1 8, 3577 3589 (1970); Wadsworth, J.I., Segal, L., and Timpa. J.D., Average Degree of Polymerization of Cellulose by GPC Without Visosity Measurements, paper presented at the 163rd National Meeting, A. C. S., Washington, D. C., Sept. 12 17, 1971.
9.
Segal, L. and Timpa, J.D., TheEffect of Formaldehyde Crosslinking of cotton on the Chain Length of the Cellulose Molecule. I. The Form W' Process, Textile Chem. Colorist4, 66-70 (1972).
10.
Segal, L. and Timpa, J.D., TheEffect of Formaldehyde Crosslinking of Cotton on the Chain Length of the Cellulose Molecule. II. 'I'he Form C Process, paper presented at the Southeast Regional Meeting, A. C. S., Nashville, Tenn., Nov. 4-6, 1971.
11.
Segal, L. and Timpa, J.D., Strength Losses and Structural Changes in Cotton Fabric Crosslinked with Dimethylol-ethylene Urea, paper presented at the 12th Cotton Utilization Res. Conf, New Orleans, Louisiana, May 8-10, 1972.
12.
Smith, A.R. , Applications of Aminoplastics to Textiles, with Special Reference to their Effect on Dyeing and Cleaning Practice, Bril. Plastics24, 386-389 (1951).
13.
Swenson, H.A. , in "Methods of Carbohydrate Chemistry, III. Cellulose," R. L. Whistler, Ed., New York, Academic Press, 1963, pp. 84-88.
14.
Timell, T. and Purvis, C.B., A Study of the Initial Stages of the Methylation of Cellulose, Svensk Papperstidin.54, 303-332 (1951).
15.
Vail, S.L., Young, A.H.P., and Verburg, G.B., DP via Wet-Fixation. Part 2. Further Evaluation and Use of Polyurethanes, Textile Ind.132 (No. 1), 111-117 (1968).
