Surface-modified hemispherical polystyrene/polybutyl methacrylate composite particles

Synthesis by a single‐step swelling process and characterization of micrometer‐sized polychloromethylstyrene/poly(butyl methacrylate) hemispherical composite particles of narrow size distribution

“…This composition change was clearly related to the addition of toluene, as it lowered the viscosity in the polymer particles and enhanced the mobility of both polymer chains, thus enabling the attainment of a more thermodynamically favorable particle composition. 30 However, when the toluene posttreatment was repeated two or three times, no further change in the composition of the PCMS phase was observed, which indicated the strong interaction between the PCMS chains and the remaining PBMA chains embedded within the PCMS. Another possible way to obtain a purer PCMS phase that we tested was by the swelling of the PCMS template particles by a similar way to that described in the Experimental part; we substituted the 0.5 mL of BMA for 0.5 mL of BMA and 0.5 mL of toluene.…”

“…[23][24][25][26] In contrast, particles with a hemispherical shape are usually produced by the swelling of the template PS particles with monomer(s) [e.g., butyl methacrylate (BMA)], which produce polymer(s) [e.g., poly(butyl methacrylate) (PBMA)] immiscible with the template PS particles. 28,[30][31][32][33] This article describes the synthesis and characterization of micrometer-sized polychloromethylstyrene (PCMS)/PBMA, composite particles of hemispherical morphology and narrow size distribution. These composite particles were prepared by a single-step swelling process of uniform PCMS template microspheres with emulsion droplets of BMA containing BP, followed by the polymerization of BMA at 738C within the swollen template particles.…”

Colloid Surfactants for Emulsion Stabilization

“…Interestingly, studies using spherical Janus particles as stabilizers have only produced spherical emulsion droplets. [21] This unique behavior of our amphiphilic dimer particles highlights the difference from molecular surfactants which do not jam at the interface due to a much shorter relaxation time and a dynamic exchange between the adsorbed molecules and freely diffusing species in the continuous phase. [22] In addition, due to their amphiphilic nature, the dimer particles are able to adsorb to interfaces more easily and strongly than the isotropic particles.…”

Influence of chelating agent and reaction time on the swelling process for preparation of porous TiO2 particles

“…[4][5][6][7] In recent years, a new method for synthesizing porous particles by the swelling process of polymer templates, such as polystyrene (PS), polypropylene and poly (dimethylsiloxane) was published. [8][9][10][11][12][13] The inorganic/organic materials have been swollen into polymer templates through the swelling process, and then a chemical or thermal method has been applied to remove the polymer templates for given molded inorganic/organic materials. This way, it would be like the socalled "template-free" approach proposed by Seshadri and his co-workers.…”