About
  PDF
Full Text
(37 K)

Strength and Structure of Cotton Fiber During Development

You-Lo Hsieh


 
ABSTRACT

Single fiber strengths and crystalline structure of greenhouse-grown Maxxa Acala cotton fibers at varying stages of development from 14 days pass anthesis to maturity are reported and compared with those of SJ-2 cotton fibers. The forces required to break single fibers increase most significantly during the fourth week and are similar between SJ-2 and Maxxa varieties through the end of the fourth weeks of development. Beyond 30 dpa, both the single fiber breaking forces and tenacities of the Maxxa cotton fibers are higher than those of the SJ-2 cotton fibers. For both varieties, cellulose I crystalline structure is found in fibers at all stages of development and the crystallinity and apparent crystallite sizes in the 101, 10 and 002 plane directions increase with fiber development. Maxxa fibers have larger crystal sizes but lower crystallinity and lower crystal density than the SJ-2 fibers at the same age. Within each variety, the single fiber breaking forces increase with increasing overall crystallinity and crystallite sizes. The relationships between the single fiber breaking tenacities and crystallinity are, however, different between these two varieties.



Reprinted from Proceedings of the 1997 Beltwide Cotton Conferences pp. 505 - 507
©National Cotton Council, Memphis TN

[Main TOC] | [TOC] | [TOC by Section] | [Search] | [Help]
Previous Page [Previous] [Next] Next Page
 
Document last modified Sunday, Dec 6 1998