Method of preparing latex for toner composition and method of preparing toner composition using the same
A technology of composition and toner, which is applied in the directions of developer, instrument, electrography, etc., and can solve problems such as difficulty in removing surfactant and complicated process
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Embodiment 1
[0065] 0.5 g of polyethylene terephthalate (PET) was dissolved in 5 mL of methylene chloride solvent, and then the obtained solution was mixed with 5 g of styrene monomer to obtain a uniform solution. Separately, 0.5 g of poly(ethylene glycol)-ethyl ether methacrylate (PEG-EEM, manufactured by Aldrich Chemical Co.) as a macromonomer was dissolved in 100 g of distilled water to obtain a mixed solution.
[0066] The homogeneous solution prepared above was vigorously stirred with the mixed solution using ultrasonic waves, thereby obtaining liquid droplets in which PET and styrene monomers were stabilized in the aqueous liquid phase. After heating the obtained mixture to 70° C. while purging with nitrogen, 0.1 g of potassium persulfate as a hydrophilic polymerization initiator was added thereto, and then the mixture was stirred at 350 rpm for 24 hours to obtain Hybrid latex. The average particle size of the polymerized latex was about 500 nm. The polymerized latex was subsequent...
Embodiment 2
[0071] 0.5 g of polyethylene terephthalate (PET) was dissolved in 5 mL of methylene chloride solvent, and then the obtained solution was mixed with 5 g of styrene monomer to obtain a uniform solution. In addition, 0.25 g of sodium dodecyl sulfate (SDS) as an emulsifier was dissolved in 100 g of distilled water to obtain a mixed solution.
[0072] The homogeneous solution prepared above was vigorously stirred with the mixed solution using ultrasonic waves, thereby obtaining liquid droplets in which PET and styrene monomers were stabilized in the aqueous liquid phase. After heating the obtained mixture to 70° C. while purging with nitrogen, 0.1 g of potassium persulfate as a hydrophilic polymerization initiator was added thereto, and then the mixture was stirred at 350 rpm for 24 hours to obtain a hybrid latex . The average particle size of the polymerized latex was about 300 nm. The polymerized latex was subsequently dried and examined by scanning electron microscopy (SEM) an...
Embodiment 3
[0078] 0.5 g of polyethylene terephthalate (PET) was dissolved in 5 mL of methylene chloride solvent, and then the obtained solution was mixed with 5 g of styrene monomer to obtain a uniform solution. Separately, 0.8 g of sodium dodecyl sulfate (SDS) as an emulsifier was dissolved in 200 g of distilled water to obtain a mixed solution.
[0079] The homogeneous solution prepared above was vigorously stirred with the mixed solution using ultrasonic waves, thereby obtaining liquid droplets in which PET and styrene monomers were stabilized in the aqueous liquid phase. After heating the obtained mixture to 70° C. while purging with nitrogen, 0.1 g of potassium persulfate as a hydrophilic polymerization initiator was added thereto, and then the mixture was stirred at 350 rpm for 24 hours to obtain a hybrid latex . The average particle size of the polymerized latex was about 80 nm. The polymerized latex was subsequently dried and examined by scanning electron microscopy (SEM) and the...
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