The effect of cosurfactants on sodium dodecyl sulfate micellar structures at a graphite surface
نویسندگان
چکیده
Sodium dodecyl sulfate (SDS) self assembles at hydrophobic graphite surfaces forming linear parallel hemicylinders with approximately 5 nm spacing between adjacent hemicylinders. In this paper, we report the effect of cosurfactants on the SDS surface micelle structures. It is known from the literature that cosurfactants influence the relaxation times of bulk phase micelles. Specifically, the relaxation times of SDS micelles increase dramatically when cosurfactants, such as non-ionic 1-dodecanol (C OH) or cationic dodecyl trimethyl ammonium bromide ( t f c I i c ©
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