Citation:
DING Wei, MAO Cheng, WEI Zhaoshui, LI Ming, YU Tao, QU Guangmiao. Salt Solution Properties of a Zwitterionic Copolymer P(AM-DMAPAAS)[J]. Chinese Journal of Applied Chemistry,
;2011, 28(5): 555-559.
doi:
10.3724/SP.J.1095.2011.00412
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A zwitterionic monomer of 3-(N,N-dimethylamino-N-sulfopropane propyl acrylamide)(DMAPAAS) was prepared by the ring opening reaction of 1,3-cyclopropanesultone with N,N-dimethylamino propyl acrylamide(DMAPAA) at 55℃ for 20 h.Zwitterionic copolymers P(AM-DMAPAAS) containing sulfobetaine groups were synthesized by copolymerization of AM and DMAPAAS in aqueous solution.The copolymers were characterized and the solubility of copolymers P(AM-DMAPAAS) was evaluated.The viscosity of the copolymers was determined.The results show that the viscosity of the copolymers in brine solution is greater than that in deionized water,and the viscosity in Mg2+ and Ca2+ salt solution is increased as the salt concentration is increased.The copolymers exhibit a typical antipolyelectrolyte behavior.Under the situation where the same temperature is increased,the viscosity retention of the zwitterionic copolymer is 1.4 times of that of PAM.
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