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Citation: Zhou Wei-Jin, Shi Nai, Wu Jin-Guang. The Formation of Microemulsion Systems of Alkali Metal Salts of a 2-Ethylhexyl Phosphonic Acid Mono 2-Ethylhecyl Ester and the FT-IR Spectroscopic Studies[J]. Acta Physico-Chimica Sinica, ;1995, 11(02): 162-166. doi: 10.3866/PKU.WHXB19950213 shu

The Formation of Microemulsion Systems of Alkali Metal Salts of a 2-Ethylhexyl Phosphonic Acid Mono 2-Ethylhecyl Ester and the FT-IR Spectroscopic Studies

1.
Department of Technical Physics,Department of Chemistry,Peking University,Beijing 100871

Received Date: 25 October 1993
Available Online: 15 February 1995

The demonized water was added to the alkali metal salts of 2-ethythexyl phosphonic acid mono 2-ethylhexyl ester (HA) to form microemulsion of W/O type. The maximum contents of H2O in these systems reached up to the mole ratio (H2O/MA+HA) of 6.5(Li), 12 (Na) and 66 (K), respectively. They are stable when the temperature is lower than 65℃ and no water separation was observed in the ultracentrifuge under 30000r?min-1. Their electrical conductance and infrared spectra in the range of 800-4000cm-1 were studied. The variation of stretching absorption peaks of P=O, P-O-C and P-O-H and their oscillator strengths with the amount of H2O added have been recorded.
- Microemulsion,
- 2-Ethylhexylphosphonic acid mono2-ethylhexyl ester,
- Saponification,
- Subtraction spectrum,
- Hydration,
- FT-IR
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