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Citation: MA Yalu, JIN Xiaoning, LIU Na, LIN Guangyu, FENG Tianshi. Oil-in-water Pickering Emulsions Stabilized by Nanometer Zein Microspheres[J]. Chinese Journal of Applied Chemistry, ;2014, 31(6): 678-683. doi: 10.3724/SP.J.1095.2014.30426 shu

Oil-in-water Pickering Emulsions Stabilized by Nanometer Zein Microspheres

1.
Department of Chemistry, Institute of Science, Tianjin University, Tianjin 300072, China

Corresponding author: MA Yalu,
Received Date: 26 August 2013
Available Online: 10 October 2013
Fund Project: 国家自然科学基金(50972103) (50972103)

Zein microspheres with the most probable diameter of 40 nm were prepared by phase separation process.Zein colloidal dispersion was concentrated under reduced pressure by rotary evaporation.Zein colloid with obvious Tyndall effect is stable even after preparation for a few months.The zeta-potentials of zein colloid were determined by electrophoretic mobility measurements.The results show that zein colloid has excellent dispersing property at pH around 4.Pickering emulsions of oil-in-water type were prepared by using zein microspheres as stabilizers.The effects of the amount of colloidal particles,oil/water volume ratio on emulsion stability were investigated.The results indicate that the addition of zein colloidal particles at 0.4% and the higher oil/water volume ratio in Pickering emulsion are propitious to increase the emulsion stability.The stability mechanism of zein microspheres as stabilizers in Pickering emulsion was also discussed on account of its amphiphilic macromolecules and interfacial assembly.
- zein microspheres,
- phase separation process,
- Pickering emulsion,
- stability mechanism
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