聚丙烯酰胺
共聚物
材料科学
蛭石
单体
丙烯酸
高分子化学
乳液聚合
化学工程
傅里叶变换红外光谱
丙烯酰胺
乳状液
聚合
磺酸
粒径
动态光散射
核化学
化学
聚合物
复合材料
纳米颗粒
纳米技术
工程类
作者
Ma Guoyan,Yiding Shen,Xiaorong Wang,Xing Guo,Zhe Wu
摘要
ABSTRACT Polyacrylamide copolymers (PAMVT) microspheres were prepared through inverse emulsion polymerization by using acrylic acid (AA), 2‐acrylamido‐2‐methylpropane sulfonic acid (AMPS) as functional monomers, N , N ′‐methylene bis ‐acrylamide (MBA) as crosslinker and modified vermiculite (MVMT) with the single‐factor experiments. The initial and swelled particle sizes were tested through the dynamic light scattering (DLS). The swelled particle size under the optimum conditions could be 1.98 μm. The structure was characterized through Fourier transform infrared (FTIR), which indicated that vermiculite has successfully modified and the polymerization reaction was completed. The scanning electron microscopy (SEM) shows that MVMT was evenly filled with PAM copolymers. The water absorption capacity can be up to 80.2%. The recovery efficiency of the water flooding was increased from 69.33% to 77.56%. All these results indicated that the microspheres emulsions could be used as profile control agent to enhance the recovery efficiency. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44918.
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