Fluorinated monomer–styrene copolymer latex particles: I. kinetic studies in a soap-free aqueous medium |
| |
Authors: | Hidenobu Shimizu Tomonari Shiraishi Risei Wada Masaru Okabe |
| |
Affiliation: | (1) Department of Applied Chemistry, Faculty of Engineering, Kanagawa Institute of Technology, 1030 Shimo-ogino, Atsugi, Kanagawa 243-0292, Japan |
| |
Abstract: | Soap-free emulsion copolymerization of 2, 2, 2-trifluoroethyl acrylate (3FEA) with styrene was carried out by using potassium persulfate as an initiator, and the effects of the weight fraction of 3FEA in the monomer feed on the kinetics and the particle size were investigated. Monomer conversions were followed by a gravimetric method, revealing that the overall polymerization rate increased exponentially with an increase in the weight fraction of 3FEA. According to dynamic light scattering measurement, the final particle size was found to decrease with an increase in the weight fraction of 3FEA. The number of particles for 3FEA homopolymerization was roughly twice as large as that at the fraction of 0.9, although both fractions had the almost same polymerization rates. These results indicate that soap-free emulsion homopolymerization of 3FEA would proceed not only inside the polymer particles but also in the aqueous phase throughout the polymerization. |
| |
Keywords: | Soap-free emulsion polymerization Emulsion polymerization Fluorinated polymer Polymeric microsphere 2, 2, 2-Trifluoroethyl acrylate |
本文献已被 SpringerLink 等数据库收录! |
|