@article{oai:soar-ir.repo.nii.ac.jp:00019580,
 author = {Mishima, Shozi and Okada, Tomohiko and Sakai, Toshio and Kiyono, Ryutaro and Haeiwa, Tetsuji},
 issue = {6},
 journal = {POLYMER JOURNAL},
 month = {},
 note = {Porous thin-film polymethylsiloxane microparticles have been prepared successfully from octyltrichlorosilane and methyltrichlorosilane in (water/oil) W/O emulsion systems by using several oil phases and changing the amount of the silanes or of the surfactant Span 60. Hollow microspheres of various shell thicknesses (120-180 nm) and high surface area were prepared by using four types of nonpolar solvents as the oil phase of the W/O emulsion system. The diameter of the spheres can also be controlled (1-1.6 mu m) by using different oil phases. The results of thermal analysis, nitrogen adsorption isotherm, infrared spectra and X-ray diffraction data showed that hollow microspheres of amorphous polymethylsiloxane with high surface area (360-385 m(2)g(-1)) can be obtained by heating the spheres in air at 673 K; the polymethylsiloxane microspheres become nonporous silica particles after calcination at 873 K for 3 h. Cup-shape microparticles of polymethylsiloxane with nano-order thickness (20-120 nm) were prepared by reducing the amount of silanes in the mixture. Small hollow particles were prepared by replacing a portion of the octyltrichlorosilane with Span 60., Article, POLYMER JOURNAL. 47(6): 449-455 (2015)},
 pages = {449--455},
 title = {Preparation of porous thin-film polymethylsiloxane microparticles in a W/O emulsion system},
 volume = {47},
 year = {2015}
}