In this paper, organic modified montmorillonite (O-MMT) was successfully encapsulated in acrylamide (AM)/cetyl dimethyl allyl ammonium bromide (SD-16)/modified β-cyclodextrin (M-β-CD) copolymer (denoted as ASM) by in situ polymerization. The ASM/O-MMT nanocomposite was characterized by FT-IR and TGA. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) clearly proved the exfoliation/intercalation phenomena of O-MMT in the ASM matrix. The results indicated that the introduction of the O-MMT endowed the ASM with excellent thickening efficiency, temperature resistance, salt tolerance, shear resistance. The viscosity retention rate of ASM/3 wt% O-MMT at 90 °C was 55.3%, which was higher than that of pure ASM (30.9%). The ability of salt tolerance for ASM/3 wt% O-MMT nanocomposite (Na⁺: 40%, Ca²⁺: 41.3% and Mg²⁺: 42%) were superior to that of ASM (Na⁺: 18.9%, Ca²⁺: 21.3% and Mg²⁺: 20.7%). Besides, measurement of the viscoelasticity revealed that the addition of the O-MMT significantly improved the storage modulus (G’) and loss modulus (G”) of ASM, which could be attributed to the O-MMT sheets in the ASM act as physical crosslinkers between macromolecules. These results indicated that ASM/O-MMT nanocomposite was more suitable for enhancing oil recovery.

本文成功地将有机改性蒙脱土（O-MMT）成功地通过丙烯酰胺（AM）/十六烷基二甲基烯丙基溴化铵（SD-16）/改性β-环糊精（M-β-CD）共聚物（ASM）包封。原位聚合。通过FT-IR和TGA对ASM / O-MMT纳米复合材料进行了表征。透射电子显微镜（TEM）和X射线衍射（XRD）清楚地证明了O-MMT在ASM基质中的剥落/嵌入现象。结果表明，O-MMT的引入使ASM具有优异的增稠效率，耐温性，耐盐性，抗剪切性。ASM / 3 wt％O-MMT在90°C下的粘度保持率为55.3％，高于纯ASM（30.9％）。ASM / 3 wt％O-MMT纳米复合材料的耐盐能力（Na ⁺：40％，Ca²⁺：41.3％和Mg ²⁺：42％优于ASM（Na ⁺：18.9％，Ca ²⁺：21.3％和Mg ²⁺：20.7％）。此外，对粘弹性的测量表明，添加O-MMT可以显着改善ASM的储能模量（G'）和损耗模量（G“），这可以归因于ASM中的O-MMT片材起到了物理作用大分子之间的交联剂。这些结果表明，ASM / O-MMT纳米复合材料更适合提高采油率。