Citation: Bo ZHOU, Jian Zhang LI, Chun Hong HE, Sheng Ying QIN. EDTA-type Polymer Based on Diazacrown Ether as the Solubilizer of Barium Sulfate to Water[J]. Chinese Chemical Letters, ;2005, 16(1): 27-30. shu

EDTA-type Polymer Based on Diazacrown Ether as the Solubilizer of Barium Sulfate to Water

The Faculty of Chemistry, Sichuan University, Chengdu 610064

Received Date: 3 December 2003

Fund Project: The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Grant No:29572050).

The EDTA dianhydride reacted with diazacrown ethers to obtain the water-soluble EDTA-diazacrown ether polymers 1~3. The effects of crown ether ring in the polymer chains including its cavity size on the solubilization of barium sulfate to water were investigated by comparison with the crown ring-free analogue 4. The result shows that the polymer 2 is the efficient solubilizer of BaSO₄ and the highest solubilization efficiency of the BaSO₄ to water is up to 72.5%.
- EDTA-diazacrown ether polymers,
- barium sulfate,
- solubilization.
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