This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1088/0953-8984/17/45/036 in citations.
Interface-solvent effects during colloidal phase transitions
Interface-solvent effects during colloidal phase transitions
We have compared calorimetric measurements with the nonlinear optical technique vibrational sum frequency scattering to investigate interface-solvent effects in colloidal gelation transitions. This allows us to explain the difference in gelation behaviour between dispersions of stearyl-coated silica...
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Personal Name(s): | Roke, S. |
---|---|
Buitenhuis, J. / van Miltenburg, J. C. / Bonn, M. / van Blaaderen, A. | |
Contributing Institute: |
Weiche Materie; IFF-IWM |
Published in: | Journal of physics / Condensed matter, 17 (2005) S. s3469 - s3479 |
Imprint: |
Bristol
IOP Publ.
2005
|
Physical Description: |
s3469 - s3479 |
DOI: |
10.1088/0953-8984/17/45/036 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Journal of Physics: Condensed Matter
17 |
Subject (ZB): | |
Publikationsportal JuSER |
We have compared calorimetric measurements with the nonlinear optical technique vibrational sum frequency scattering to investigate interface-solvent effects in colloidal gelation transitions. This allows us to explain the difference in gelation behaviour between dispersions of stearyl-coated silica particles in n-hexadecane and benzene or toluene. In n-hexadecane dispersions, an anomalous heat effect is observed, due to the formation of an ordered interface layer (that is not confined to the first monolayer and is composed of similar to 1/3 surface crafted chains and similar to 2/3 solvent molecules). For solvents that cannot interdigitate with the surface chains this transition does not occur and consequently no heat effect is observed. |