Studies on suspension and emulsion. li. peculiar morphology of composite polymer particles produced by seeded emulsion polymerization

Design, Synthesis, and Application of Anisotropic Janus Particles

“…In the early-stage research, Okubo et al [20][21][22] carried out a series of important experiments to show that the morphology of heterogeneous polymer composite particles could be changed from raspberry-like to snowman-like by seeded emulsion polymerization, depending upon the type and weight ratio of polymers. In 1990, Sheu et al [18,19] reached a milestone in this field.…”

Effect of the Formulation Control Agent on Brightness of Modified Fly Ash and Its Potential Application in Papermaking

“…Therefore, the brightness of fly ash needs to be increased with a suitable method to broaden its application as a filler. After the Japanese scholar Okubo proposed the new concept of "particle design" in the 1980s, the research and development of composite particles with a core-shell structure have been favored, and a large number of composite powders with core-shell structures have been developed (Okubo et al 1980;Okubo et al 1981;Okubo et al 1982;Fan 2004). In recent years, powder surface coating modification technology has developed rapidly and is widely used (Fan et al 2012(Fan et al , 2014(Fan et al , 2015.…”

Synthesis and characterization of styrene‐butyl acrylate polymers, varying feed composition in a semicontinuous emulsion process

“…Unfortunately, because of the many variables involved in such polymeriza-tion process, different particle morphologies may be obtained at the end of the reaction. [18][19][20] Changes in the monomer/seed ratio, type and amount of emulsifier, and feed mode of emulsion components are just some of the different process parameters controlling the development of particle morphology throughout a SEP, 19,[21][22][23] which is in fact, the result of the balance between several kinetic and thermodynamic factors. 24,25 Besides, for a given chemical system, the mechanical behavior of the polymer bulk obtained through of a two-component SEP depends, [25][26][27][28] among other factors, on the morphology of particles used to prepare such bulk, the thermomechanical treatment suffered by the material to obtain the bulk (that could even modify its morphology), the system composition, the molecular weight distribution of linear polymer chains, and the amount and structural characteristics of branched polymer chains that could be produced throughout the polymerization reactions.…”