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Citation: ZHAO Jin-Hua, SUN Duo-Xian. CMC and Surface Electric Charge of Amphiphilic PECA-g-PEG Micelles[J]. Chinese Journal of Applied Chemistry, ;2004, 21(8): 844-846. shu

CMC and Surface Electric Charge of Amphiphilic PECA-g-PEG Micelles

ZHAO Jin-Hua ,
SUN Duo-Xian ^,

1.
School of Chemical Engineering, Tianjin University, Tianjin 300072

Corresponding author: SUN Duo-Xian,
Received Date: 20 September 2003
Available Online: 5 March 2004

The critical micelle concentration(CMC) value and surface charge of the amphiphilic graft copolymer PECA-g-PEG micelles(PECA:polyethyl cyanoacrylae, PEG:polyethylene glycol) are reported. CMC of the copolymers is determined from the absorbance change of bromophenol blue solution as function of copolymer concentration, which is about 1×10^-6 mol/L. The critical coagulation concentration (c_c^z) of electrolytes with different valence(z) for the copolymer micelles are examined by visual method and compared with that obtained by experiential formula c_c^z∝z^-6. The relation formula for different cations is deduced:c_c^z∝z ^-4, which indicates the electronegative character of the micelle surface.
- amphiphilic copolymer,
- polyethyl cyanoacrylate-g-polyethylene glycol,
- critical micelle concentration,
- coagulation,
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CMC and Surface Electric Charge of Amphiphilic PECA-g-PEG Micelles

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com