Journal of Radiation Research and Radiation Proces ›› 2012, Vol. 30 ›› Issue (1): 14-20.doi: 10.11889/j.1000-3436.2012.rrj.30.120103

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Synthesis of polymerizable nonionic emulsifier and its application in radiation miniemulsion polymerization of styrene

WANG Mozhen1,2  HE Jing1,2  GE Xuewu1,2   

  1. 1(CAS Key Laboratory of Soft Matter Chemistry, Hefei 230026, China)
    2(Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China)
  • Received:2011-10-27 Online:2012-02-20 Published:2014-09-25

Abstract:

A polymerizable nonionic emulsifier, hydroxyethyl acrylate-2, 4-diisocyanatotoluene-polyethylene glycol (HEA-TDI-PEO), was designed and synthesized to explore its role in the stabilization of miniemulsion system. The hydrophilicity and solubility in oil or water of HEA-TDI-PEO can be controlled by adjusting the molecular weight of PEO and the total molecular weight. It was found that HEA-TDI-PEO could combine the function of emulsifier and costabilizer, which would be solely used to prepare stable St miniemulsion. The stability of the miniemulsion system with HEA-TDI-PEO with different molecular weight and concentration were investigated by dynamic light scattering, transmission electron microscope and X-rays photoelectron spectroscopy analysis. The kinetics of the polymerization of St, which was initiated by 60Co ?-rays, is in accord with droplet nucleation mechanism. Only 2%–2.5% weight percent of HEA-TDI-PEO(1900) based on the monomer can form a stable miniemulsion and further result in uniform PS latex particles.

Key words: Polymerizable nonionic emulsifier, Hydroxyethyl acrylate-2, 4-diisocyanatotoluene-polyethylene glycol (HEA-TDI-PEO), Radiation miniemulsion polymerization, Styrene

CLC Number: 

  • O621.3+92