High correlation is shown to exist between crystallite orientation and tensile proper ties of bundles of cotton fibers. Statistical analyses of bundle data failed to uncover pronounced dependence of bundle tensile properties on reversal frequency. Evidence is given of the influence of heredity on reversal frequency.
Data on single cotton fibers are presented to illustrate the relationships or lack of relationships of reversals and x-ray angle to strength and elongation. X-ray angle and reversal frequency are interrelated at a very low level of significance and are shown to be related to single-fiber tenacity, elongation, and decrease in strength with increase in gage length. The tensile properties from bundle and single-fiber measurements are more strongly related to x-ray orientation than to reversal frequency.
Balls, W.L. and Hancock, H.A., Measurement of the Reversing Spiral, Proc. Royal Soc. (London) B99, 130-147 (1926).
2.
Berkley, E.E. , Woodyard, O.C., Barker, H.D., Kerr, T., and King, C.J., Structure, Determined by X-ray, and Strength of Cotton Fiber , U. S. Dept. Agr. Tech. Bull. No. 949, p. 64 (1948 ).
3.
Betrabet, S.M. , Plant Cell Wall Structure with Special Reference to Cotton Fibre, J. Scient. Ind., Res.26, 201-208 (1967).
4.
Betrabet, S.M. , Pillay, P.R., and Iyengar, R.L.N., Structure andProperties of Cotton Fibers, Part II, Birefringence and Structural Reversals in Relation to Mechanical Properties, Textile Res. J.33, 720-727 (1963).
5.
Creely, J.J. , Segal, L., and Ziifle, H.M., Determination of the Degree of Crystallite Orientation in Cotton Fibers by Means of the Recording X-ray Diffraction Spectrometer , Textile Res. J.26, 789-795 (1956).
6.
DuPré, M., Jr., Permanent Set in Cotton and the Physical Mechanism of Wrinkle Resistant Treatments, Textile Res. J.29, 151-155 (1959).
7.
Fransen, T., Private Communications (Nature and Origin of Reversals in Cotton Fibers and Their Relation to Mechanical Properties), PL-480 Project, UR-E4-(20)-1.
8.
Fransen, T. and Verschraege, L., A Study of the Reversal Phenomenon in the Fibrillar Structure of Cotton Fibre , Ann. Sc. Textile Belges No. 3, 40-69 (1967).
9.
Grant, J.N., deGruy, 1. V., Egle, C.J., Jr., and Hassenboehler, C.B., Jr., Some New Concepts in the Structure of Cotton Fibers, Proc. Sixth Cotton Utilization Research Conference, New Orleans, ARS 72-52, pp. 23-25 (1966).
10.
Grant, J.N. and Morlier, O.W., Relation of Specific Strength of Cotton Fibers to Fiber Length and Testing Method, Textile Res. J.18, 481-487 (1948).
11.
Hertel, K.L. and Craven, C.J., CottonFiber Bundle Elongation and Tenacity as Related to Some Fiber and Yarn Properties , Textile Res. J.26,479-484 (1956).
12.
Isings, J., The Influence of Stress and Deformation on the Structure of Cotton Fibers , Textile Res. J.34, 236-246 (1964).
13.
Meredith, R.J. , Molecular Orientation and the TensileProperties of Cotton Fibers, J. Textile Inst.37, T205-218 (1946 ).
14.
Orr, R.S. and Grant, J.N., Single-Fiber Load-Elongation Tester for Cotton, Textile Res. J.23, 505-509 (1953).
15.
Orr, R.S., Weiss, L.C., and Grant, J.N., The Relation of Single-Fiber to Flat Bundle Strength and Elongation, Textile Res. J.25, 939-946 (1955).
16.
Orr, R.S., DeLuca, L.B., Burgis, A.W., and Grant, J.N., Fiber Structure and Mechanical Properties of Untreated and Modified Cottons , Textile Res. J. 29, 144-150 (1959).
17.
Orr, R.S., Burgis, A.W., DeLuca. L. B., and Grant, J. N., The Role of Spiral Structure in Untreated and Treated Cottons, Textile Res. J.31, 302-310 (1961).
18.
Radakrishnan, T., Viswanathan, G.S., and Shelat, B.R., "Structural Imperfections in Cotton Fibers ," Technolog. Conf., Ahmedabad Textile Industry's Association (India) A36-44 (1959).
19.
Raes, G., Fransen, T., and Verschraege, L., Study of the Reversal Phenomenon in the Fibrillar Structure of Cotton Fibers , Textile Res. J.38, 182-195 (1968).
20.
Rebenfeld, L. and Virgin, W.P., Relationship Between X-ray Angle of Cottons and Their Mechanical Properties, Textile Res. J.27, 286-289 (1957).
21.
Sisson, W.A. , X-ray Analyses of Textile Fibers. Relation of Orientation to Strength of Raw Cotton, Textile Res. J.7, 425-431 (1937).
22.
Wakeham, H. and Spicer, N., The Strength andWeakness of Cotton Fibers, Textile Res. J.21, 187-194 (1951).
23.
Weiss, L.C. , Orr, R.S., Nott, E.H., and Grant, J.N., An Evaluation of Several Factors in Flat Bundle Testing, Textile Bul.88, 38-42 (1962).
24.
Weiss, L.C. , Orr, R.S., Redmann, J.J., and Grant, J.N., Moduli of Cotton Fibers and Yarns in Relation to X-ray Angles, Textile Res. J.31, 787-793 (1961).
