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Citation: ZHANG Kai, HUANG Yu-Hong, FU Qiang, JIANG Lu-Xia, ZHOU De-Hui. The Feasibility of Repeated Use of Solvent in Dispersion Polymerization[J]. Chinese Journal of Applied Chemistry, ;2003, 20(10): 942-945. shu

The Feasibility of Repeated Use of Solvent in Dispersion Polymerization

ZHANG Kai ^a,c ,
HUANG Yu-Hong ^c ,
FU Qiang ^a,b ,
JIANG Lu-Xia ^a,b,, ,
ZHOU De-Hui ^c

1.
a College of Polymer Science and Engineering, Sichuan University, Chengdu 610065;
2.
b State Key Laboratory of Polymer Materials Engineering, Chengdu;
3.
c Institute of Mechanics, CAEP, Mianyang

Corresponding author: JIANG Lu-Xia,
Received Date: 30 January 2003
Available Online: 9 July 2003
Fund Project: 中国工程物理研究院基金(20010326)资助项目 (20010326)

Monodisperse(dispersion coefficient ε≤0.05) polystyrene microspheres were prepared by dispersion polymerization in ethyl alcohol using polyvinylpyrrolidone(PVP) as a steric stabilizer and 2,2'-azo-bisizobutyronitrile as an initiator. Three batches of 3.0 μm monodisperse polystyrene microspheres were prepared with ethyl alcohol which has been used three times in recycling. The products were characterized by SEM and size analysis. The concentrations of reactants in three batches were examined by gas chromatography. The size of polystyrene microspheres and the dispersion coefficient were ε increased slightly with the times of solvent recycling(D₁=3.02 μm, ε1=0.02; D₂=3.17 μm,ε₂=0.03; D₃=3.25 μm, ε₃=0.05). But if the dispersion coefficient ε of polystyrene microspheres is beyond 0.05, the ethyl alcohol used must be purified in second batch.
- dispersion polymerization,
- recycled solvent,
- monodisperse polystyrene microspheres
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