Journal of Guangdong University of Technology ›› 2017, Vol. 34 ›› Issue (02): 34-39.doi: 10.12052/gdutxb.160029

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Synthesis of Monodisperse PMMA Microspheres by Photoinitiated RAFT Dispersion Polymerization

Fu Li-li, Bai Yu-hao, Zhang Xue-chao, Tan Jian-bo, Zhang Li   

  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2016-03-02 Online:2017-03-09 Published:2017-03-09

Abstract:

In this study, poly (methyl methacrylate) (PMMA) microspheres were synthesized by photoinitiated RAFT dispersion polymerization in an ethanol/water mixture. The mechanism of photoinitiated RAFT dispersion polymerization was investigated, and the effects of reaction conditions on microspheres size and size distribution studied. The results showed that the nucleation of photoinitiated RAFT dispersion polymerization was at around 60 min. The concentrations of photoinitiator and stabilizer had a little influence on the particle uniformity. Monodisperse microspheres were obtained at RAFT agent concentrations ranging from 0.25% to 0.75%. It was found that the diameter of microspheres became larger as the monomer concentration or the content of ethanol in the medium increased.

Key words: photoinitiation, RAFT polymerization, dispersion polymerization, monodisperse microspheres

CLC Number: 

  • TQ323.8

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