Preparation of Black Printing Toner Through in Situ Emulsion Polymerization: Effect of the Amount of Surfactant and Monomer Ratio on Particle Size and Morphology

The performance of the toner based printing and copying machines will be influenced by the morphology of toner, particle size and its distribution. spherical toner particles is theoretically an ideal toner. because of its uniform charge distribution and high flow ability. emulsion copolymerization of styrene and butyl acrylate monomers was done in presence of carbon black at various concentrations of sodium dodecyl sulfate as surfactant and different monomer ratios. sem was used to characterize the final toner particles. the conversion percentage of the reaction was calculated to ensure the polymerization reaction. the effect of sls dosage and monomer ratio on morphology and particle size of toner particles was investigated. toner with particle size in the range of 50-68 nm with low pdi and reaction conversion above 90% is obtained. spherical shape with core shell structure of cb encapsulated polymer particles is obtained and their shape factors were calculated. observations indicate that with increasing the dosage of sls, the particle size of toner decreases and the shape of the particles becomes less spherical. on the other hand, with increasing the amount of styrene compared to butyl acrylate, the particle size decreases and the morphology of the particles becomes more spherical.

Preparation of Black Printing Toner through in situ Emulsion Polymerization: Effect of the Amount of Surfactant and Monomer ratio on Particle Size and Morphology

The performance of the toner based printing and copying machines will be influenced by the morphology of toner, particle size and its distribution. Spherical toner particles is theoretically an ideal toner. Because of its uniform charge distribution and high flow ability. Emulsion copolymerization of Styrene and Butyl Acrylate monomers was done in presence of Carbon Black at various concentrations of Sodium dodecyl Sulfate as surfactant and different monomer ratios. SEM was used to characterize the final toner particles. The conversion percentage of the reaction was calculated to ensure the polymerization reaction. The effect of SLS dosage and monomer ratio on morphology and particle size of toner particles was investigated. Toner with particle size in the range of 50-68 nm with low PDI and reaction conversion above 90% is obtained. Spherical shape with core shell structure of CB encapsulated polymer particles is obtained and their shape factors were calculated. Observations indicate that with increasing the dosage of SLS, the particle size of toner decreases and the shape of the particles becomes less spherical. On the other hand, with increasing the amount of styrene compared to butyl acrylate, the particle size decreases and the morphology of the particles becomes more spherical.