Preparation of Porous Silicone Resin Sheet with Phase Inversion in Parallel with Non Solvent Induced Phase Separation and Application to Hollow Particle Formation

Takuya Yokoyama, Yoshinari Taguchi, Masato Tanaka

Graduate School of Science and Technology, Niigata University, Niigata, Japan.

DOI: 10.4236/msa.2014.59067                

Abstract

We have tried to prepare the porous silicone resin sheet with the phase inversion method in parallel with the non solvent induced phase separation method. In the experiment, ethyl acetate and water were adopted as a good solvent and a poor solvent for silicone resin, respectively and ethyl alcohol as an amphiphilic solvent was used to increase the solubility of ethyl acetate in water and decrease the interfacial tension by mass transfer from water to ethyl acetate. The concentration of silicone resin in ethyl acetate and the oil soluble surfactant species were changed. Increasing the concentration of silicone resin could depress coalescence between the water droplets in the (W/O) dispersion and increase the porosity and pore number density of silicone resin sheet. Span 80 among the oil soluble surfactant species made the porosity and pore number density larger. The effect of physical proparties of liquids concerned on the porosity and pore number density was discussed on the basis of dispersing behavior of liquid droplets in the liquid-liquid dispersion. The hollow silicone resin particles could be prepared by applying the preparation method presented here.

Keywords

Porous Silicone Resin Sheet, Non Solvent Induced Phase Separation, Phase Inversion, Hollow Silicone Resin Particles

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Matsuyama, H., Teramoto, M. and Uesaka, T. (1997) Membrane Formation and Structure Development by Dry-Cast Process. Journal of Membrane Science, 135, 271-288. http://dx.doi.org/10.1016/S0376-7388(97)00154-3
[2]	Tokuyama, H., Sumida, H., Kanehara, A. and Nii, S. (2009) Effect of Surfactants on the Porous Structure of Poly(NIsopropylacrylamide) Hydrogels Prepared by an Emulsion Templating Method. Colloid and Polymer Science, 287, 115-121. http://dx.doi.org/10.1007/s00396-008-1964-1
[3]	Kim, J.K., Taki, K., Nagamine, S. and Ohshima, M. (2009) Preparation of a Polymeric Membrane with a Fine Porous Structure by Dry Casting. Journal of Applied Polymer Science, 111, 2518-2526. http://dx.doi.org/10.1002/app.29348
[4]	Ji, S., Srivastava, D., Parker, N.J. and Lee, I. (2012) Transitional Behavior of Polymeric Hollow Microsphere Formation in Turbulent Shear flow by Emulsion Diffusion Method. Polymer, 53, 205-212. http://dx.doi.org/10.1016/j.polymer.2011.11.013
[5]	Chen, Y., Chen, Y., Nan, J., Wang, C. and Chu, F. (2012) Hollow Poly (N-Isopropylacrylamide)-Co-Poly(Acrylic Acid) Microgels with High Loading Capacity for Drugs. Journal of Applied Polymer Science, 124, 4678-4685.
[6]	Costa, H.S., Mansur, A.A.P., Barbosa-Stancioli, E.F., Pereira, M.M. and Mansur, H.S. (2008) Morphological, Mechanical, and Biocompatibility Characterization of Macroporous Alumina Scaffolds Coated with Calcium Phosphate/PVA. Journal of Materials Science, 43, 510-524. http://dx.doi.org/10.1007/s10853-007-1849-6
[7]	Graham, P.D., Barton, B.F. and Mchugh, A.J. (1999) Kinetics of Thermally Induced Phase Separation in Ternary Polymer Solutions. II. Comparison of Theory and Experiment. Journal of Polymer Science: Part B: Polymer Physics, 37, 1461-1467. http://dx.doi.org/10.1002/(SICI)1099-0488(19990701)37:13<1461::AID-POLB12>3.0.CO;2-B
[8]	Xin, Y., Fujimoto, T. and Uyama, H. (2012) Facile Fabrication of Polycarbonate Monolith by Non-Solvent Induced Phase Separation method. Polymer, 53, 2847-2853. http://dx.doi.org/10.1016/j.polymer.2012.04.029
[9]	Tanaka, M., Nagada, K. and Oyama, Y. (1970) Coalescence of Dispersed Liquid Droplets in a Batch Type of Stirred Tank Reactor. Kagaku Kogaku, 34, 893-897. http://dx.doi.org/10.1252/kakoronbunshu1953.34.893
[10]	Oshima, E. and Tanaka, M. (1982) Coalescence and Breakup of Droplets in Suspension Polymerization of Styrene. Kagaku Kogaku Ronbunshu, 8, 86-90. http://dx.doi.org/10.1252/kakoronbunshu.8.86
[11]	Tanaka, M. and Morishima, T. (1986) Deposition of Solid Particles on Walls of the Stirred Tank Reactor and Draft Tube. Kagaku Kogaku Ronbunshu, 12, 231-234. http://dx.doi.org/10.1252/kakoronbunshu.12.273
[12]	Ilia Anisa, A.N., Nour, A.H. and Nour, A.H. (2010) Catastrophic and Transitional Phase Inversion of Water-in-Oil Emulsion for Heavy and Light Crude Oil. Journal of Applied Sciences, 10, 3076-3083. http://dx.doi.org/10.3923/jas.2010.3076.3083
[13]	Tanaka, M. and OShima, E. (1982) Effect of Viscosity of Continuous Phase on Stability of Droplets in Suspension Polymerization of Styrene. Kagaku Kogaku Ronbunshu, 8, 734-738.
[14]	Taguchi, Y. and Tanaka, M. (1998) Effect of Solid Powders as Stabilizers on Polymer Particles Sizes in Suspension Polymerization. Kagaku Kogaku Ronbunshu, 24, 633-637. http://dx.doi.org/10.1252/kakoronbunshu.24.633
[15]	Mitomi, R., Taguchi, Y. and Tanaka, M. (2006) Preparation of Polyester Composite Nanoparticles Containing Pigment Using Phase-Inversion Emulsification Followed by Dry-in-Liquid Method. Journal of the Japan Society of Colour Material, 79, 487-491.