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Citation: YE Ming-Quan, HE Li-Li, HAN Ai-Jun. Preparation of Cobalt Coated PS-MAA Composite Particles by Ultraviolet Irradiation[J]. Chinese Journal of Applied Chemistry, ;2009, 26(5): 538-542. shu

Preparation of Cobalt Coated PS-MAA Composite Particles by Ultraviolet Irradiation

1.
School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094

Corresponding author: YE Ming-Quan,
Received Date: 30 April 2008
Available Online: 28 August 2008

PS-MAA copolymer particles were prepared by suspension polymerization,which was used to prepare metal cobalt coated PS-MAA composite particles by ultraviolet irradiation.The shapes of metal cobalt on the surface of composite particles could be changed from flaky,rod to spherical with the amount of surfactant used.The influencing factors on coating formation and composite reaction rate such as surfactant,concentration of Co²⁺,stirring,etc.were also studied.The study shows that the coating formation can be increased by using composite surfactant,decreasing the concentration of Co²⁺ from 0.01 mol/L to 0.005 mol/L,or increasing the number of stirring from once to 3 times a day.The composite reaction rate of the anion surfactant system is higher than that of the nonionic surfactant system.When the surfactant conce-ntration in the system is too high,the micelle will be associated with liquid crystal layer,resulting in amorphous metal cobalt coated on the surface of composite particles,while crystal cobalt coated composite particles can be prepared on decreasing the surfactant concentration.
- ultraviolet irradiation,
- cobalt,
- coating,
- composite particles,
- conductive polymer,
- surfactant
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