TY - GEN
T1 - Structure of multi-component colloidal lattices at oil-water interfaces
AU - Ma, Huan
AU - Dai, Lenore
PY - 2010/12/1
Y1 - 2010/12/1
N2 - We have successfully assembled two-component S-PS/AS-PS (sulfate-treated polystyrene/aldehyde sulfate-treated polystyrene) and three-component S-PS/AS-PS/C-PS (sulfate-treated polystyrene/aldehyde sulfate-treated polystyrene/carboxylate-treated polystyrene) colloidal lattices at poly(dimethylsiloxane)-water interfaces. The colloidal particles assemble into long-range ordered structure and oscillate around their equilibrium positions. Different types of particles distribute randomly in the lattice with no obvious phase separation. In the two-component colloidal lattices, the S-PS particles form mostly 6-fold lattice sites, whereas the AS-PS particles largely form 5-fold defect sites. The calculated attractive capillary force is stronger for the AS-PS particles, which likely explains their tendency of aggregation compared to the S-PS particles. In addition, we have performed total force calculation and extrapolated the surface charge densities of the particles in the oil phase.
AB - We have successfully assembled two-component S-PS/AS-PS (sulfate-treated polystyrene/aldehyde sulfate-treated polystyrene) and three-component S-PS/AS-PS/C-PS (sulfate-treated polystyrene/aldehyde sulfate-treated polystyrene/carboxylate-treated polystyrene) colloidal lattices at poly(dimethylsiloxane)-water interfaces. The colloidal particles assemble into long-range ordered structure and oscillate around their equilibrium positions. Different types of particles distribute randomly in the lattice with no obvious phase separation. In the two-component colloidal lattices, the S-PS particles form mostly 6-fold lattice sites, whereas the AS-PS particles largely form 5-fold defect sites. The calculated attractive capillary force is stronger for the AS-PS particles, which likely explains their tendency of aggregation compared to the S-PS particles. In addition, we have performed total force calculation and extrapolated the surface charge densities of the particles in the oil phase.
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M3 - Conference contribution
AN - SCOPUS:78751476722
SN - 9780816910656
T3 - AIChE Annual Meeting, Conference Proceedings
BT - 10AIChE - 2010 AIChE Annual Meeting, Conference Proceedings
T2 - 2010 AIChE Annual Meeting, 10AIChE
Y2 - 7 November 2010 through 12 November 2010
ER -