Revistes Catalanes amb Accés Obert (RACO)

Acción del laurilsulfato sódico en el blanqueo de la lana con peróxido de hidrógeno.

Joaquín Gacén Guillén, José Cegarra Sánchez, Montserrat Caro

Resum


A study of the influences of a sodium laurylsulfate pretreatment, at different pH, on the properties of wools bleached with hydrogen peroxide, has been carried out. It has been seen that a pretreatment a pH 3 gives wools with the same whiteness but less content of cysteic acid than untreated wool in the same conditions. On the other hand, wool bleaching in a peroxide bath containing sodium laurylsulfate produces a whiter wool with less content of cysteic acid than wool bleached without the above mentioned compound. The addition of laurylsulfate to the bleaching bath reduces the concentration of peroxide requested to reach a predetermined whitness.

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