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将甲基丙烯酸二甲氨基乙酯(DMAEMA)与丙烯酰胺(AM)进行水溶液原子自由基共聚,制备出一种黏度可控聚合物P(AM-DMAEMA)。其最佳合成条件为:单体质量分数20%,聚合温度40℃,引发剂质量分数0.2%,聚合时间4.0 h。聚合物分子结构采用1HNMR进行表征;通过溶液电导率、Zeta电位及粒径分析实验证实其具有CO2可逆调控性能,并对聚合物溶液黏度变化性能及变黏机理进行了分析。结果表明,P(AMDMAEMA)水溶液具有CO2调控变黏性能和较好的CO2结合稳定性。
A controlled viscosity polymer P (AM-DMAEMA) was prepared by free radical copolymerization of dimethylaminoethyl methacrylate (DMAEMA) and acrylamide (AM). The optimum synthesis conditions were as follows: monomer content 20%, polymerization temperature 40 ℃, initiator mass fraction 0.2% and polymerization time 4.0 h. The molecular structure of the polymer was characterized by 1 HNMR. It was confirmed that it possessed the CO2 reversible control performance by the solution conductivity, Zeta potential and particle size analysis. The viscosity change behavior and viscosity change mechanism of the polymer solution were also analyzed. The results show that P (AMDMAEMA) aqueous solution has the property of controlling the CO2 viscosity and the CO2 binding stability.