Previous work on the morphology of naturally coloured green cottons has suggested that the secondary wall of the fibers consists of alternate layers of cellulose and a waxy organic substance called suberin. The work described in this paper has shown that modern varieties of green cotton do contain a large proportion of suberin. Data form fibre swelling is consistent with alternate layeres of suberin and cellulose in the secondary wall. The naturally coloured fibres have a lower tenacity and work or rupture than conventional white fibres although they have an acceptable level of textile properties. The crystallinity of the coloured fibers although they have an accpetable level of textile properties. The crystallinity of the coloured fibres is lower than of white cotton, but the cellulose has the Cellulose I structure normally found in cotton.
展开▼
