Photorheological (PR) fluids represent a class of material that has generated a significant amount of interest in the recent years due to its wide variety of possible uses. Recent reports on nanoparticle based photofluids helps in eliminating the need for extensive chemical synthesis leading to PR behavior. However, the kinetics of gelation of these new PR fluids is not well understood. The kinetics of gelation and the factors affecting gel formation upon UV exposure were explored using in-situ photorheology and a Laponite based PR system. These systems were further analyzed using a variety of other techniques including light and x-ray scattering as well as differential scanning calorimetry (DSC) and microscopy.

In situ photorheology: Kinetics of photogelation in laponite based photorheological fluids

242nd National Meeting (2011)

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