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- W2377014370 abstract "The Hofmann degradation of polyacrylamide was studied and polyvinylamine chloride with different amination degrees was analyzed by thermogravity. Results show that when mass fraction of polyacrylamide is less than 5%,amination degree of product rises with the increasing of mass fraction of polyacrylamide,but when this value is more than 5%,the amination degree of product decreases with the increasing of mass fraction of polyacrylamide. When the mole ratio of NaOCl to polyacrylamide, NaOH to polyacrylamide(first step), NaOH to polyacrylamide(second step), and reaction time is 1,1,30 and 10 h respectively, the amination degree of polyvinylamine reaches the maximum. Result of thermogravity analysis shows that the thermal stability of polyvinylamine chloride with partial amination degree lowers with the increasing of amination degree. Moreover, there are two main gravity loss zones, which means polyvinylamine chloride with partial amination degree is a copolymer." @default.
- W2377014370 created "2016-06-24" @default.
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- W2377014370 date "2002-01-01" @default.
- W2377014370 modified "2023-09-25" @default.
- W2377014370 title "Preparation of polyvinylamine by Hofmann degradation and analysis of its thermal stability" @default.
- W2377014370 hasPublicationYear "2002" @default.
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