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- W2374915772 abstract "Diethanolamine borate was prepared by using diethanolamine and boric acid as starting materials.The diethanolamine borate was used for the preparation of N-dodecyl-diethanolamine borate(RNB)by reacting with bromododecane and for the preparation of dodecanamide diethanolamine borate(RNOB)by reacting with methyl laurate.The chemical structure of the two products were identified by elemental analysis,IR-spectrum and NMR-spectrum.The critical micelle concentration(cmc)of RNB and RNOB were determined by surface tension method.The effects of salinity and pH to the cmc of the products were studied.The results show that the cmc of RNOB and RNB is 4×10~(-4) mol/L and (1.2×10~(-4) mol/L) respectively,while γ_(cmc) is 33.3 mN/m and 31.5 mN/m respectively.At pH 10,the cmc of both RNOB and RNB in solution that contains 0.1 mol/ L NaCl is lower than in solution that does not contain NaCl,and the cmc will increase following the decline of pH.At pH 4,γ_(cmc) will decrease due to hydrolysis." @default.
- W2374915772 created "2016-06-24" @default.
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- W2374915772 date "2005-01-01" @default.
- W2374915772 modified "2023-09-25" @default.
- W2374915772 title "Study of preparation and surface activity of diethanolamine alkyl borate" @default.
- W2374915772 hasPublicationYear "2005" @default.
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