Synthesis and characterization of polyacrylonitrile nanoparticles by dispersion/emulsion polymerization process

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

“…On the other hand, increasing the BP concentration from 0.5 to 1.0% led to an increase in the diameter of the composite particles from 2.0 6 0.1 to 2.3 6 0.1 mm, whereas additional increases in the BP concentration, for example, 4.0 and 8.0%, led only to a slight increase in the diameter, for example, 2.4 6 0.1 and 2.5 6 0.1 mm, respectively. A similar influence of the initiator concentration was previously reported by Boguslavsky et al 45 and others. 12,[46][47][48][49] According to their explanation, increasing the initiator concentration caused an increase in the concentration of the oligomeric radicals and, thus, in the number of PBMA chains.…”

Synthesis of polyacrylonitrile based nanoparticles via aqueous dispersion polymerization

“…Boguslavsky et al reported the effects of DMF in dispersion/emulsion polymerization of acrylonitrile in the presence of potassium persulfate as an initiator, alkyl-sulfate and sulfonate surfactants. 12 These researchers described that the addition of small amount of DMF as the co-solvent was needed to dissolve the acrylonitrile monomers. Consequently, addition of DMF affected to the solubility of monomer and PAN-based terpolymer in reaction medium, and it is produced PAN-based particles to be successfully formed in our experimental system.…”

“…According to Boguslavsky et al, this phenomenon was explained that nanocrystalline grains were existed within and on the surface. 12 The characteristics of synthesized PAN-based nanoparticles are analyzed in Figure 4, which is showed the relationship with particle size distributions and reaction time. With increasing polymerization time, average particle size distribution graphs are narrow and shifted to the right.…”

Poly (acrylonitrile-co-methyl methacrylate) nanoparticles: I. Preparation and characterization

“…Data show an increase in particle size from approximately 40 to 1212 nm with increase in the concentration of AN from 10% to 100%. On the other hand, increasing the concentration of MMA from 10% to 90% will lead to spherical and narrow size particles (Boguslavsky et al, 2005). Fig.…”

“…divinyl benzene or bisacrylamide (Ivanov and Yotova, 2002;Cao, 2006). In the same context, Boguslavsky et al (2005) have reported the preparations of polyacrylonitrile nanoparticles using dispersion/emulsion polymerization method (Boguslavsky et al, 2005). On the other hand, Lee et al (2009) have reported the synthesis of poly(AN-co-IA-co-MA) nanoparticle using acrylonitrile, itaconic acid, and methyl acrylate via aqueous dispersion polymerization using hydrophilic PVA in a water/N,N-dimethylformamide mixture media.…”