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The Effects of Surfactants on the Morphology of Colloidal Crystals in Self-assembly

Published online by Cambridge University Press:  01 February 2011

Zuocheng Zhou ,
Qin Li ,
Likui Wang  and
Xiusong Zhao
Zuocheng Zhou
Affiliation:
[email protected], Curtin University of Technology, Dept. of Chemical Engineering, Perth, Western Australia, 6845, Australia
Qin Li
Affiliation:
[email protected], Curtin University of Technology, Dept. of Chemical Engineering, Perth, Western Australia, 6845, Australia
Likui Wang
Affiliation:
[email protected], National University of Singapore, Dept of Chemical and Biomolecular Engineering, Singapore, N/A, N/A, Singapore
Xiusong Zhao
Affiliation:
[email protected], National University of Singapore, Dept of Chemical and Biomolecular Engineering, Singapore, N/A, N/A, Singapore
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Abstract

In this research, sodium dodecyl sulfates (SDS) and N-cetyl-n,n,n-trimethyammonium bromide (CTAB) surfactant solutions are used as solvents of polystyrene (PS) colloidal suspension during the fabrication of colloidal crystals. The effects of the surfactant on the quality and the morphology of the colloidal crystals are studied. It was found that surfactants not only change the charge of PS colloidal particles, but also significantly changed the surface tension and the 3 phase contact angle of the suspension with respect to the glass substrate, in turn they change the thickness of the formed crystal as well as the crystal structure. The derived knowledge will be potentially useful in clarifying the mechanisms involved in the formation of colloidal crystals.

Keywords

colloidself-assemblycrystal growth
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 942: Symposium W – Colloidal Materials – Synthesis, Structure, and Applications , 2006 , 0942-W11-34
Copyright
Copyright © Materials Research Society 2006

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