Synthesis of Monodisperse Polystyrene Particles in the Presence of Sodium Dodecyl Sulfate and Carboxyl-containing Initiator

Sammary: Various techniques of one‐step batch emulsion copolymerization of methyl methacrylate (MMA) or styrene (St) with N‐vinylformamide (NVF) initiated by 2,2′‐azobis(2‐methylpropanamidine) (AIBA) or 2,2′‐azobis[4,5‐dihydroimidazol‐2‐yl] (AIP) dihydrochlorides in the presence of dextran, cetyltrimethylammonium bromide (CTAB) or without any stabilizers were examined to obtain monodisperse submicron and nano‐ particles, having both positive surface charge and hydrophilic surface. After hydrolysis in acidic media, the particle surface contained amino groups originating from NVF units along with carboxylic groups from hydrolyzed initiator residues. The obtained particles were tested as building blocks of hierarchic structures. Owing to their amphiphilic surface, the particles were capable of self‐assembling from their dispersions into three‐dimentional (3D) ordered arrays.

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Monodisperse Particles Based on Copolymers of Methyl methacrylate or Styrene with N‐Vinylformamide

Men’shikova

Evseeva

Шевченко

et al. 2009

Macromolecular Symposia

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From polymeric nanoparticles to dye‐containing photonic crystals: synthesis, self‐assembling, optical features, and possible applications

Yakimansky¹,

Men’shikova²,

Шевченко³

et al. 2009

Polymers for Advanced Techs

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Poly(styrene-co-N-vinylformamide) (poly(St-co-VFA)) nanoparticles with the diameter from 55 to 200 nm were prepared by emulsion copolymerization and their self-assembling was studied. In the dispersions of these particles, the formation of iridescent periodic colloid structures is observed. The period of the structures is about 220 nm and shows no cymbate dependence on the nanoparticle size, indicating the possible variety of packing types occurring during the self-assembling of nanoparticles in dispersions. For 250-300 nm sized poly(styrene-co-methacrylic acid) (poly(St-co-MAA)) particles, it was shown that ionization of their surface carboxylic groups in alkaline media leads to the considerable improvement of the photonic crystal structures obtained from the dispersions of these nanoparticles. It was demonstrated that cationic chromophores can be adsorbed on their negatively charged surface. In this way, chromophore-modified polymer photonic crystal materials for applications as gas or liquid sensors could be prepared, as their measured fluorescence spectra show remarkable and reversible responses to the presence of polar organic solvent vapors, e.g. acetone.

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Effect of the oligodimethylsiloxane chain length and concentration of carboxyl groups on the colloidal chemical properties and characteristics of polymethyl methacrylate suspensions

et al. 2022

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Synthesis of Monodisperse Polystyrene Particles in the Presence of Sodium Dodecyl Sulfate and Carboxyl-containing Initiator

Cited by 6 publications

References 4 publications

Monodisperse Particles Based on Copolymers of Methyl methacrylate or Styrene with N‐Vinylformamide

Monodisperse Particles Based on Copolymers of Methyl methacrylate or Styrene with N‐Vinylformamide

From polymeric nanoparticles to dye‐containing photonic crystals: synthesis, self‐assembling, optical features, and possible applications

Effect of the oligodimethylsiloxane chain length and concentration of carboxyl groups on the colloidal chemical properties and characteristics of polymethyl methacrylate suspensions

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