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- W2387913306 abstract "Allyldimethylamine was produced in 68.7% yield by treating aqueous solution of dimethylamine with equivalent allyl chloride.Quaternisation of allyldimethylamine with sodium chloroacetate(mole ratio=1∶0.8) at 60-70 ℃ gave the amphoteric monomer N-carboxymethyl-N,N-dimethyl-N-allylammonium hydroxide inner salt(CDAH) in 96.5% yield(based on sodium chloroacetate ).Finally CDAH/acrylamide(AA) amphoteric copolymer was prepared in aqueous solution with sodium hydrogen sulfate(NaHSO 3) and potassium persulfate(K 2S 2O 8 )as initiators.The process parameters were given as reaction temperature 60-80 ℃,mass percent of monomers w(CDAH+AA)=30%,mole ratio n(CDAH)∶n(AA)=3∶7,and amounts of NaHSO 3 and K 2S 2O 8 being both 0.2% by weight based on total monomers.The isoelectric zone (IEZ) was determined and solution properties studied.The results showed that the polyampholyte at non-IEZ in water had typical viscosity characteristics of polyelectrolyte.As the radius of the salt anionic ion increased,or as the salt concentration increased,the reduced viscosity and intrinsic viscosity decreased.The viscosity behavior of the polyampholyte at IEZ in water coincided with Mark-Huggins equation." @default.
- W2387913306 created "2016-06-24" @default.
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- W2387913306 date "2003-01-01" @default.
- W2387913306 modified "2023-09-23" @default.
- W2387913306 title "Synthesis and Solution Properties of Water-soluble Polyampholyte" @default.
- W2387913306 hasPublicationYear "2003" @default.
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