紡績用綿繊維の成熟度(maturity)に関する研究
第1報 成熟度ならびに繊度の種々な測定法について
1957 年 13 巻 8 号 p. 513-517
詳細
1957 年 13 巻 8 号 p. 513-517
Maturity index and fineness of lint during the growing process of cotton fiber were daily measured by causticaire method in order to make clear the maturing process of cotton fiber. Then these same samples were measured by the various measuring methods of fineness, which are based upon different principles and assumptions, and they were compared.
The cotton variety used for this research was “Rikuchimen Kan-no No.1”, a sort of upland cotton.
Following results are obtained.
1) Maturity index and fineness of lints increased linearly from 21st day to 40th day after flowering and later showed constant value until the boll opening. From above experiments, it may be concluded that the elongation growth of lint completed by 22nd day after the flowering, wall thickness increased linearly and completed 40th day after flowering, and cellulose was synthesized and deposited in lint at the same rate during the secondary wall formation.
2) Measured value of micronaire fineness, causticaire fineness and arealometer fineness, of lints whose maturity index were above 60, well agreed with each other, but the frequency of measurement should be increased by causticaire and arealometer methods in extremely immature lints.
