Relation of Cotton Fiber Maturity and Strength Uniformity to Change in Tenacity with Mercerization

Abstract

Bolls of eight cultivars of Gosspium hirsutum L. were harvested 26, 32, 38, and 44 days postanthesis. Percent maturity varied from 2 to 91, and strength uniformity varied from 0.386 to 0.611. Strength uniformity was negatively correlated with the increase in tenacity on both slack and tension mercerization (tenacity ratio) on samples within a harvest date. When all harvest dates were included, this relationship was nonsignificant. Within a cultivar this correlation was strong and positive. The relationship of XaOH maturity to the tenacity ratio was not significant on samples from one harvest date, but it increased to significance when the range in maturity was extended to include samples from all harvest dates. Within a cultivar this relation was strong and negative. Data on 38- and 44-day-old bolls cover maturities encountered in commercial cottons, and these data show a higher correlation between strength uniformity and tenacity ratio than between maturity and tenacity ratio.

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References

American Society for Testing and Materials, (a) D-1449-58 (1971), (b) D-1442-75, (c) D-1445-75, (d) D-1441-72 (1977), Philadelphia , Pa.

deBoer, J.J. , The Difference in Morphology and Tensile Properties Between the Fibers of Gossypium hirsutum and Gossypium barbadense , Textile Res. J. 48 , 185-190 (1978).

Lawson, R. , "Response" (to Differential Reponse of Cotton to Slack Swelling in Sodium Hydroxide, by G. M. Venkatesh) Textile Res. J. 45, 814-815 (1975).

Lawson, R. and Ramey, H.H., Jr. , Dependence of Changes in Tenacity with Mercerization on Strength Uniformity and Maturity of Cotton Samples, Textile Res. J. 47, 249-255 (1977).

Lawson, R. , Ramey, H.H., Jr. , and Elliott, P.W. , Stress-Strain Properties of Mercerized, Stretched, and Durable-Press Treated Cotton Fibers, Textile Res. J. 45, 510-514 (1975).

Raes, G. , Fransen, T. , and Verschraege, L. , Specificity of Cotton Varieties for Easy-Care Treatments, Ann. Sci. Text. Belg., No. 1, 50-61 (1977).

Raes, G. and Verschraege, L. , Prediction of the Response of Various Cottons to Modern Finishing Processes Melliand Textilber. (English Ed.) 771-773 (Sept. 1976).

Rajagopalan, A. , Venkatesh, G.M. , and Dwettz, N.E. , Differential Response of Cotton to Slack Mercerization, Textile Res. J. 45, 409-413 (1975).

Ramey, H.H., Jr. , Turner, J.H. , and Wortey, S., Jr. , "1972 Regional Cotton Variety Tests, ARS-S-62," Agricultural Research Service, U. S. Dept. of Agriculture, 1975, p. 91.

10.

Rousselle, M.A. , Nelson, M.L. , Hassenboehler , C.B. , and Legendre. D.C. , Liquid-Ammonia and Caustic Mercerization of Cotton Fibers: Change in Fine Structure and Mechanical Properties, Textile Res. J. 46, 304-310 (1976).

11.

Rowland, S.P. , Nelson. M.L. , Welch, C.M. , and Hebert, J.J. , Cotton Fiber Morphology and Textile Performance Properties, Textile Res. J. 46, 194-214 (1976).

12.

Snedecor, G.W. , "Statistical Methods," Fifth Edition. The Iowa State College Press, Ames, Iowa, 1959.

13.

Stewart. J.M. , Fiber Initiation on the Cotton Ovule (Gossypium hirsutum), Am. J. Botany 62, 723-730 (1975).

14.

Tharp, W.H. , "The Cotton Plant,'' Agricultural Handbook No. 178, U. S. Department of Agriculture, Washington, D.C., 1960, 19 pp.

15.

Venkatesh, G.M. , Differential Response of Cotton to Slack Swelling in Sodium Hydroxide, Textile Res. J. 45. 813-814 (1975).

16.

Venkatesh, G.M. and Dweltz, N.E. , Behavior of Untreated and Cross-linked Cotton Fibers. I. Contribution of Maturity, J. Appl. Polym. Sci. 19, 2067-2078 (1975 ).

17.

Venkatesh, G.M. and Dweltz. N.E. , Behavior of Untreated and Cross-linked Cotton Fibers. II. Contribution of Intrinsic Fiber Properties, J. Appl. Polym. Sci. 19, 2079-2086 (1975 ).