Comparison Test of Oily Soil Removal of Japanese Laundry Detergents Using a Regression Formula to Derive Soil Quantity from K/S Value of Colored Oil

Detergency process of oily soil removal from fabrics is of interest and the mechanisms of oily soil removal are very complicated involving several factors: interfacial tension, oil loading and surfactant adsorption. In this study, the effects of oil loading and the surfactant adsorption on the detergency performance of oily soil removal were investigated. Mixed surfactant systems of branched alcohol propoxylate sulfate sodium salt (Alfoterra 145-3PO), an extended anionic surfactant, and secondary alcohol ethoxylate (Tergitol 15-S-5), a nonionic surfactant, were used to form microemulsions with motor oil. The CMC and CµC values of the mixed surfactants were 0.015 and 0.04 % total active mixed surfactants concentration, respectively. A polyester/cotton blend [65/35] was selected to use as a testing fabric in detergency experiments. The results showed that the oil loading and fabric weight did not affect the efficiency of oil removal. Furthermore, with the selected formulation (0.1 wt.% Alfoterra 145-3PO and 5 wt.% Tergitol 15-S-5), the oil detachment time was investigated at different temperatures (30-50°C) and different total surfactant concentrations (0.04-0.5 %). The results showed that increasing temperature and surfactant concentration were found to decrease the oil detachment time, leading to increasing oil removal.

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Oily soil removal from a polyester substrate by aqueous nonionic surfactant systems

Journal of the American Oil Chemists Society ◽

10.1007/bf02671763 ◽

1979 ◽

Vol 56 (1) ◽

pp. 59-70 ◽

Cited By ~ 48

Author(s):

K. W. Dillan ◽

E. D. Goddard ◽

D. A. McKenzie

Keyword(s):

Nonionic Surfactant ◽

Soil Removal ◽

Oily Soil ◽

Surfactant Systems

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Applying Differential Scanning Calorimetry to Detergency Studies of Oily Soil

Textile Research Journal ◽

10.1177/004051759206200207 ◽

1992 ◽

Vol 62 (2) ◽

pp. 101-104 ◽

Cited By ~ 3

Author(s):

Mamiko Yatagai ◽

Motoko Komaki ◽

Toshimasa Hashimoto

Keyword(s):

Differential Scanning Calorimetry ◽

Filter Paper ◽

Soil Removal ◽

Fibrous Materials ◽

Oily Soil ◽

Melting Points ◽

Scanning Calorimetry ◽

Dsc Measurements ◽

Peak Areas ◽

Polymorphic Forms

Differential scanning calorimetry (DSC) has been applied to studies of oily soil removal from fibrous materials. Fabric and filter paper were soiled with various oily substances present in sebum. After washing, the fibrous samples were subjected to DSC measurements. The residual oily soils on the samples were analyzed by the melting peak areas of the DSC heating curves, a method that is widely applicable to various oily substances with different melting points and polymorphic forms. Various woven or nonwoven fibrous samples can be scanned, regardless of sample size in washing experiments.

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