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- W2374359213 abstract "The N-(2-aminoethyl) dehydroabietic acid amide(ADRA)was prepared from dehydroabietic acid and 1,2-ethylenediamine.The mediator ADRA-F-KL was synthesized from Kraft lignin(KL),ADRA and formaldehyde(ADRA-F-KL) by mannich reaction.The effects of reaction temperature,reaction time,the molar ratio of reactants on nitrogen contents of ADRA-F-KL were investigated.Cationic composite emulsifier(ADRA-DETA-F-KL) was prepared from ADRA-F-KL,formaldehyde and diethylenetriamine(DETA).The experiments showed that the optimum reaction conditions of ADRA-F-KL were 3h of reaction time,n(KL)∶n(ADRA)=1∶0.25,90℃ of reaction temperature.The IR,elemental analysis and surface tension of the target product showed that the corresponding amine-methyl groups were introduced into KL by the Mannich reaction.The minimum surface tension value of ADRA-DETA-F-KL was 48.5 mN/m in dilute hydrochloric acid solution with 2 of pH value.Compared to the lignin modified by diethylenetriamine/ formaldehyde whose minimum surface tension is 57.80 mN/m,the surface activity of ADRA-DETA-F-KL is improved greatly." @default.
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- W2374359213 date "2011-01-01" @default.
- W2374359213 modified "2023-10-05" @default.
- W2374359213 title "The Synthesis of Dehydroabietyl Lignin Amine and Its Surface Activity" @default.
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