洗浄の研究 (第9報) : 天然皮脂汚こうの洗浄性

概要

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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.