Emulsion Polymerization of a Sugar Derivative–Kinetic Studies and Properties of the Sugar Latexes

2003 ◽  
Vol 204 (56) ◽  
pp. 803-812 ◽  
Author(s):  
Ulrich Koch ◽  
Emile-Joseph Yaacoub
Keyword(s):  
Emulsion Polymerization ◽  
Kinetic Studies ◽  
Sugar Derivative

scholarly journals Synthesis and kinetic studies of TiO2/polystyrene composite particles by emulsion polymerization

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Zhang Jianmin ◽  
Peng Zheng ◽  
Sun Xiuguo ◽  
Wang Caihui ◽  
Gao Jungang
Keyword(s):  
Emulsion Polymerization ◽  
Sodium Dodecyl ◽  
Monomer Concentration ◽  
Kinetic Studies ◽  
Composite Particles ◽  
Polymerization Temperature ◽  
Initiator Concentration ◽  
Potassium Persulphate ◽  
Initial Monomer ◽  
Emulsifier Concentration

AbstractIn the presence of titanium dioxide (TiO2) nanoparticles, emulsion polymerization of styrene with sodium dodecyl sulphate (SDS) as an emulsifier and potassium persulphate as an initiator was investigated in detail. It was shown that SDS concentration influences the morphology of the composite particles in higher degree. Moreover, the effects of operating variables such as emulsifier concentrations, initiator concentration, monomer concentration, and polymerization temperature on the kinetic features were also examined. The kinetic data showed that at conditions studied, the rate of polymerization over interval II was proportional to the 0.68 power of the initial emulsifier concentration, to the 2.2 power of the initial initiator concentration and to the 1.6 power of the initial monomer‟s concentration. The initiator concentration has a dominant effect on the rate of the polymerization. The appropriate conditions for polymerization were obtained when emulsifier concentration of 6.5×10-3 mol·L-1, initiator concentration of 4.4×10-3 mol·L-1, the polymerization temperature of 75 °C and the initial monomer‟s concentration of 0.288 mol·L-1 were used. The polymerization rate obtained is more favorable than that of the conventional emulsion approach. The experimental results can be reasonably ascribed to the nucleation mechanism of “TiO2/SDS” micelles in the emulsion polymerization of styrene.

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