Determining Short Fiber Content in Cotton

Abstract

Based on large data sets from three consecutive cotton crop years, linear models for SFW and SFN in terms of the HVI length parameters have been developed. The necessity of modifying the Suter-Webb array distributions is justified. The results are discussed in light of the concept of "similarity" related to fiber length distributions, as defined in Part I. Using normalized regression equations, UI is demonstrated to have a stronger influence on SFC than the range parameters (UHM, ML). The terms UI, UHM, ML are standard measurements of the HVI instruments and have been defined in the text. The models developed in this study have been compared with the one developed by Preysch in 1979, and the relative improvement over Preysch's method is discussed.

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References

ASTM Standard D 1440-77 (reapproved 1982), Standard Testing Method for Length and Length Distribution of Cotton Fibers (Array Method), Annual Book of ASTM Standards, vol. 07.02, 317-323, 1987.

Cotton Fiber and Processing Test Results, crop of 1985, 1986, 1987, USDA-AMS, Cotton Division, Fiber Performance Section, Clemson, SC.

Cotton Fiber Array Test Results ( 1985, 1986, 1987 ), USDA-AMS, Cotton Division, Cotton Testing Laboratory, Clemson, SC.

Neter, J. , and Wasserman, W. , "Applied Linear Statistical Models," Richard D. Irwin, Inc., Homewood, Il, 1974.

Preysch, M. , Production and Quality Control in Cotton Spinning, Int. Textile Bull. Spin. Ser. 2/ 1979, 299-312 (1979).

Zeidman, M.I. , Batra, S.K. , and Sasser, P.E. , Determining Short Fiber Content in Cotton, Part I: Some Theoretical Fundamentals, Textile Res. J. 61, 21-30 (1991).