Modeling of Particle Migration inside Vibration Bubbles in Bubble-Stretching Dispersion Method

Abstract:

Bubble-stretching based dispersion method can be used to prevent the agglomeration of nanoparticles during the process of preparing nanocomposites, whereas its effectiveness is restricted by the practically low migration ratio of particles onto the bubble wall. Theoretical models for bubble vibration and particle migration have been presented, followed by numerically study on effects of different parameters on migration ratio of particles on to the bubble wall. The numerical results have shown that bubble initial radius, bubble initial pressure and particle diameters impact the particle migration ratio obviously and it is found that the particle migration ratio can be improved effectively through the optimal control of the vibration parameters of the bubble happed in the dispersion process. Therefore, this article provides a theoretical basis for the efforts on increasing the particles migration ratio and thus the dispersion effectiveness of nanoparticles in polymer melt.

• Periodical: Key Engineering Materials (Volumes 562-565)
• Pages: 1182-1189
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.562-565.1182
• Online since: July 2013
• Authors: Fei Wang, Yan Ling Zhang, Liang Zhao, Xiao Ming Wang
• Keywords: Bubble-Stretching Dispersion, Particle Migration, Vibration Bubbles

References

[1] Tholen Y.Y.a.A.R., Adhesion between Nanoparticles, Nanostr. Mater. 12 (1999).

[2] M.Kh M.I.A.a., Surface tension of ultrafine particles, 12. 365 (1999).

[3] Kawasumi M., The discovery of polymer‐clay hybrids, J. of Polym. Sci.. A, Polym. Chem. 42 (2004).

[4] Sudduth R.D., A generalized model to predict the viscosity of solutions with suspended particles. IV. Determination of optimum particle‐by‐particle volume fractions, J. Appl. Polym. Sci. 52 (1994).

DOI: 10.1002/app.1994.070520717

[5] Mackay M.E., A. Tuteja, P.M. Duxbury, et al., General strategies for nanoparticle dispersion, Science. 311 (2006) 1740-1743.

DOI: 10.1126/science.1122225

[6] D. M. Wu Q.Y.M., Y. Liu, Y. M. Ding, W. H. Chen, H. Xu and D. Y. Ren, In situ bubble-stretching dispersion mechanism for additives in polymers, J. Polym. Sci. B, Polym. Phys. 41 (2003).

[7] Wu Q.Y.M.a.D.M., A study of bubble inflation in polymers and its applications, Phys. Lett. A 327 (2004).

[8] X. T. Zheng D.M.W., Q. Y. Meng, K. J. Wang, Y. Liu, L. Wan and D. Y. Ren, Mechanical properties of low-density polyethylene/nano-magnesium hydroxide composites prepared by an in situ bubble stretching method, J. Polym. Res. 15 (2008).

DOI: 10.1007/s10965-007-9141-7

[9] H. Ounis G.A.a.J.B.M., Dispersion and deposition of Brownian particles from point sources in a simulated turbulent channel flow, J.Colloid Interface Sci. 147 (1991).

DOI: 10.1016/0021-9797(91)90151-w

[10] Han H.J.Y.a.C.D., Oscillatory behavior of a gas bubble growing (or collapsing) in viscoelastic liquids, AIChE J. 28 (1982).

DOI: 10.1002/aic.690280616

[11] T. S. Laker S.M.G., Monte-carlosimulation of aerosoltransport in risingsphericalbubbles with internalcirculation, J Aero. Sci. 35 (2004).

[12] Han H.J.Y.a.C.D., Studies on structural foam processing. III. Bubble dynamics in foam extrusion through a converging die, Polym. Eng. Sci. 21 (1981).

DOI: 10.1002/pen.760210203

[13] Yoo C.D.H.a.H.J., Studies on structural foam processing. IV. Bubble growth during mold filling, Polym. Eng. Sci. 21 (1981).

DOI: 10.1002/pen.760210903