纎維の結晶構造と染色性に關する研究
第4報 濕潤状態における纎維素纎維結晶領域の染色性
1955 年 11 巻 3 号 p. 144-147,141
詳細
1955 年 11 巻 3 号 p. 144-147,141
By investigating the dyeability of the crystalline regions of natural and regenerated cellulose fibres by the comparative dyeing method, the following results have been obtained:
(1) Under the same dyeing condition, the dyeability of a crystalline region is greater than that of the fibre itself.
(2) The velocity with which the dye particles spread over the crystallized portion varies with the difference in the kind of dyestuffs as well as in crystalline structure of the fibre concerned. It may be said that, in addition to the amount of crystalline substance contained therein, the size of the crystalline regions and the degree of their orderliness may also affect the distribution of dye in the fibre.
(3) In the case of an excellently crystallised fibre such as cotton, much more dye particles tend to permeate into the crystalline regions than into the noncrystalline regions containing pseudocrystalline regions. But in the case of poorly crystallised fibres such as viscose rayon or staple, the dye diffuses much slowly through crystalline regions than through the noncrystalline regions containing pseudocrystalline regions.
(4) It seems most probable that the difference of the distribution of dye in the crystalline and noncrystalline regions greatly affects the shade and fastness of dyeing.
