title: Reactivity of hair cystine in microemulsion media.
abstract: Synopsis Reduction of keratin cystine by thioglycolic acid incorporated in microemulsions of the water/sodium dodecilsulphate/n-pentanol/n-dodecane system has been determined. The results obtained have been interpreted in relation to the properties of the reaction media. Microemulsions with constant oil-to-surface active mixture weight ratios (R(o/s)) and different concentrations of water were chosen as reaction media. At low water concentrations a steep increase in reactivity with the increase of water was observed at all values of R(o/s). However it was more pronounced the higher the oil content. A relation between maximum cysteine formation and percolative behaviour of the microemulsion was found at high R(o/s) values.
authors.affiliation: Institute de Tecnología Química y Textil (C.S.I.C.), c/o Jorge Girona Salgado, 18-26, 08034 Barcelona, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Erra
authors.forename: C
authors.initials: C
authors.lastname: Solans
authors.forename: N
authors.initials: N
authors.lastname: Azemar
authors.forename: J L
authors.initials: JL
authors.lastname: Parra
authors.forename: D
authors.initials: D
authors.lastname: Touraud
authors.forename: M
authors.initials: M
authors.lastname: Clausse