The acceleration of decomposition of potassium persulfate in the presence of sodium dodecyl sulfate and polymer particles as a model of emulsion polymerization system

1991 ◽  
Vol 269 (2) ◽  
pp. 121-123 ◽  
Author(s):  
M. Okubo ◽  
M. Fujimura ◽  
T. Mori
2016 ◽  
Vol 1133 ◽  
pp. 510-514
Author(s):  
Mohd Nasha’ain Nordin ◽  
Nuruzatulifah Asari ◽  
Khairuldin Isha ◽  
Wedianti Suhaldi ◽  
Ahmad Aswad Mahaidin ◽  
...  

Abstract.Polystyrene (PS) nanospheres were synthesized by emulsion polymerization using 2,2′-Azobis (2-methylpropionitrile) (AIBN) as initiator and Sodium dodecyl sulfate (SDS) act as surfactant. The size and distribution of the PS nanospheres were systematically investigated in terms of surfactant concentration. Effect of the surfactant towards to the particle size is study using SEM, FTIR and XRD. It is found that increase in Sodium dodecyl sulfate (SDS) concentration increase the reaction time thus longer time needed for the formation of the nanosphere. However their properties are comparable to the commercial Polystyrene PS nanosphere.


e-Polymers ◽  
2005 ◽  
Vol 5 (1) ◽  
Author(s):  
Kiyoshi Suzuki ◽  
Yasutaka Yamada ◽  
Kazumi Fujita ◽  
Mamoru Nomura ◽  
Hideya Saito

AbstractIn order to clarify the kinetics and mechanism of miniemulsion polymerization of a sparingly water-soluble monomer, the miniemulsion polymerization of 1,1,2,2-tetrahydroperfluorodecyl acrylate was conducted at 50°C using potassium persulfate as initiator and sodium dodecyl sulfate as emulsifier, respectively. It was found that the rate of polymerization was proportional to the 0.65 power of the initial initiator concentration and to the 0.30 power of the number of miniemulsion droplets (latex particles). It is pointed out that the kinetics of this polymerization system may be subject to the modified case III kinetics of emulsion polymerization with predominant bimolecular termination in the aqueous phase.


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