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- W2376670111 abstract "A new strong cationic amphoteric polymeric flocculant was prepared from a starch-g-polyacrylamide through aminomethylation, sulfonation and quaterization. The effect of the ratio of reagents, temperature, pH and reaction time on the degrees of amination, anion and quaterization were examined. The optimum synthesis conditions were as follows:the mole ratio of n(starch-g-polyacrylamide)∶n(formaldehyde)∶n(sodium- bisulfite)∶n(epoxy chloropropane) equal to 1∶1.2∶0.7∶0.4∶0.4, the conditions of sulfomethylation t=65 ℃, pH=12, time=3.0 h, and the conditions of quaterization t=50 ℃, pH=11, time=3.5 h. The degrees of amination, anion and quaterization in the product were 5.55 mmol/g, 2.44 mmol/g, and 2.55 mmol/g, respectively." @default.
- W2376670111 created "2016-06-24" @default.
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- W2376670111 date "2004-01-01" @default.
- W2376670111 modified "2023-09-23" @default.
- W2376670111 title "Synthesis of Strong Cationic Amphoteric Flocculant Based on Starch" @default.
- W2376670111 hasPublicationYear "2004" @default.
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