Dust sebum

In a study, binary mixtures of five surfactants were evaluated for their physical properties and detergencies. The physical property data shows some trends, but does not correspond to the detergencies in a well defined matrix (Table 6). Lower dynamic surface tension usually gives better cleaning on dust sebum. 

TABLE 2 Effect of Hard Water on Detergency of Tallow Amine + 15 EO (100°F dust/sebum on cotton)... 

TABLE 11 Detergency Performance of Tallow Triamine 12 mole Ethoxylate (TT-12EO) on Dust Sebum, Olive OU, and Grass Stain on Cotton and Cotton Polyester... 

As the amount of EO is increased on cocoamide MEA, from 5 moles through 20 moles detergency improves on cotton with dust/sebum soil. It increases as the moles of EO are increased from 5 to 10 to 15 moles. Further increase from 15 to 20 moles of EO decreases the detergency (% Soil Removed). Cotton is a hydrophilic substrate and thus more soil is removed from cotton substrate as the surfactant become increasingly hydrophilic until a limit is reached. At 20 moles EO the surfactant becomes too soluble and its surface properties get negatively affected. 

Polyester is a hydrophobic substrate and that is why the relatively more hydrophobic surfactants in a series, clean polyester better. In cocamide MEA series, from 5 through 20 moles EO adducts the percentage soil removal for polyester soiled with dust/sebum decreases from 29.7 for 5-mole adduct to 23.3 for 10-mole adduct to 16.6 for 15 moles, and finally it reaches the lowest number of 14.3 for the 20-mole EO adduct. Similar behavior can be observed by looking into the percentage soil removal numbers for tallowamide MEA, where the numbers go down from 10 through 20 moles of EO. 

TABLE 19 Detergency of Ethoxylated Amides on Particulate Soils (dust sebum, standard soil, clay). Oily Soils, and Stains (chocolate milk, coffee, grape juice, grass, ketchup, tea) Using Ig/L at 100°F... 

Terg-O-Tometer Detergency of C13.6 SME/SFA Dust-Sebum on Cotton... 

FIG. 3 Comparison of the detergency performance of linear alkylbenzenesulfonate and Cj alkyldiphenyl oxide disulfonate. The detergency comparison was conducted at 25°C using a Tergotometer and dust/sebum-soiled swatches of cotton, cotton/polyester, and polyester. Clean swatches of each fabric type were also included to measure redeposition. The detergency score is a summation of reflectance deltas of the clean and soiled swatches before and after washing. 

The components (MAMS, MADS, DADS, DAMS Fig. 1) that make up the commercial blend of alkyldiphenyl oxide disulfonates were evaluated individually in both built and unbuilt formulations to determine the effect of equivalent weight on detergency performance (Fig. 10) Measuranents were obtained on dust/sebum and ground-in-clay soils on cotton, cotton/polyester, and polyester fabric. 

The same systems were evaluated for detergency at a concentration of 0.2 (w/w)% in the Terg-o-tometer. The test fabric was cotton uniformly stained with dust/sebum. The test was carried at a temperature of 40°C at pH 10 in soft water. Wash time was 15 min and rinse time was 5 min. The results are presented in Figure 10. Na LED3A can be seen to be more effective than LAS under the con-... 

Soil types Dust-sebum, standard soil, oily soils, various stains... 

Uses High-performance, heavy-duty llq. cone, for household, institutional, and industrial laundry applies. exc. performance In hard water and on dust-sebum soil with cotton, polyester, and blends has buffering capacity Properties Yel. cl. liq. vise. 600 cps pH 10.4 63% solids UseLevei 0.1% cone. 

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