Structure of multi-component colloidal lattices at oil-water interfaces

Huan Ma, Lenore Dai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationAIChE Annual Meeting, Conference Proceedings
StatePublished - 2010
Event2010 AIChE Annual Meeting, 10AIChE - Salt Lake City, UT, United States
Duration: Nov 7 2010Nov 12 2010

Other

Other2010 AIChE Annual Meeting, 10AIChE
CountryUnited States
CitySalt Lake City, UT
Period11/7/1011/12/10

Fingerprint

Polystyrenes
Oils
Sulfates
Water
Aldehydes
Polydimethylsiloxane
Surface charge
Charge density
Phase separation
Agglomeration
Defects

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Ma, H., & Dai, L. (2010). Structure of multi-component colloidal lattices at oil-water interfaces. In AIChE Annual Meeting, Conference Proceedings

Structure of multi-component colloidal lattices at oil-water interfaces. / Ma, Huan; Dai, Lenore.

AIChE Annual Meeting, Conference Proceedings. 2010.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ma, H & Dai, L 2010, Structure of multi-component colloidal lattices at oil-water interfaces. in AIChE Annual Meeting, Conference Proceedings. 2010 AIChE Annual Meeting, 10AIChE, Salt Lake City, UT, United States, 11/7/10.
Ma H, Dai L. Structure of multi-component colloidal lattices at oil-water interfaces. In AIChE Annual Meeting, Conference Proceedings. 2010
Ma, Huan ; Dai, Lenore. / Structure of multi-component colloidal lattices at oil-water interfaces. AIChE Annual Meeting, Conference Proceedings. 2010.
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