Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2000-09-20
Physics
Condensed Matter
Soft Condensed Matter
1 textfile, 20 figures (jpg), to appear in PRE
Scientific paper
10.1103/PhysRevE.62.6895
The relaxation following a temperature quench of two-phase (lamellar and sponge phase) and three-phase (lamellar, sponge and micellar phase) samples, has been studied in an SDS/octanol/brine system. In the three-phase case we have observed samples that are initially mainly sponge phase with lamellar and micellar phase on the top and bottom respectively. Upon decreasing temperature most of the volume of the sponge phase is replaced by lamellar phase. During the equilibriation we have observed three regimes of behaviour within the sponge phase: (i) disruption in the sponge texture, then (ii) after the sponge phase homogenises there is a lamellar nucleation regime and finally (iii) a bizarre plume connects the lamellar phase with the micellar phase. The relaxation of the two-phase sample proceeds instead in two stages. First lamellar drops nucleate in the sponge phase forming a onion `gel' structure. Over time the lamellar structure compacts while equilibriating into a two phase lamellar/sponge phase sample. We offer possible explanatioins for some of these observations in the context of a general theory for phase kinetics in systems with one fast and one slow variable.
Buchanan Margaret
Cates Michael E.
Egelhaaf Stefan U.
Starrs Laura
No associations
LandOfFree
Kinetic pathways of multi-phase surfactant systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Kinetic pathways of multi-phase surfactant systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kinetic pathways of multi-phase surfactant systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-367421