洗浄の研究 (第9報)

天然皮脂汚こうの洗浄性

抄録

Detergency of fabrics soiled with natural sebum that was extracted with ethyl ether from soiled under-shirts has been studied.
Detergency of natural sebum for fabrics decreases in the order as follows.
Cotton≥wool>polyester>polypropylene
Detergency of the components of natural sebum for respective fabric decreases in the order as follows.
For cotton : other residues (fatty alcohols, waxes, hydrocarbons, and so on) >free fatty acids>glycerides≥steroids_??_squalene
For polyester : free fatty acids>steroids_??_other residues>squalene>glycerides
For wool : free fatty acids_??_other residues>steroids>glycerides_??_squalene
For polypropylene : free fatty acids>steroids_??_other residues_??_squalene>glycerides
The relation between the detergency of oleic-1-¹⁴C or triolein-1-¹⁴C contained within natural sebum and cycles of soiling and laundering shows that oleic acid-1-¹⁴C accumulates considerably for cotton and wool but scarcely for nylon and polyester, on the other hand, triolein-1-¹⁴C accumlates considerably for polyester, cotton, and wool but comparatively scarcely for nylon.