Formation of PMMA Microspheres Including TiO2 Nanoparticle by Polymerization in Supercritical CO2

Hideto Matsuyama; Natsuki Kawamura; Masaaki Teramoto

doi:10.11491/apcche.2004.0.916.0

Asian Pacific Confederation of Chemical Engineers congress program and abstracts

Session ID : 3P-07-096

DOI https://doi.org/10.11491/apcche.2004.0.916.0

Conference information

Host: The Society of Chemical Engineers, Japan

Formation of PMMA Microspheres Including TiO₂ Nanoparticle by Polymerization in Supercritical CO₂

Hideto Matsuyama, Natsuki Kawamura, Masaaki Teramoto

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Keywords: precipitation polymerization, supercrirical carbon dioxide, nanoparticle, poly(methyl methacrylate)

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

The polymer particles were prepared by the precipitation polymerization in supercritical CO₂ (scCO₂). The polymer particle including the nano-size TiO₂ was successfully obtained. The effect of experimental conditions such as monomer concentration, CO₂ pressure and kinds of monomers on the particle size was investigated. The particle size decreased as the compatibility between the polymer and scCO₂ increased. In addition, the dispersion polymerization was carried out by using Krytox as a stabilizer. The addition of the stabilizer was very effective to obtain the mono-dispersed discrete particles.

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