Increasing nano-particle dispersion ratio in the bubble stretching-based technique

We present a new method to increase nano-particle migration rate in bubble stretching-based technique. Vibration created by the inflation and shrinking process of bubbles is used. Process parameters can be adjusted to increase the probability of collision between the nano-particles and the bubble wall. In effect, particles sufficiently migrate to the bubble wall, increasing both particle migration rate and dispersion ratio. Our measurement show that: (1) particle diameter, initial bubble radius, and initial bubble pressure strongly influence the migration of particles; (2) with appropriate parameters, nano-particles can quickly and efficiently migrate to the bubble wall through this new method. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012