Synthesis of a novel β-cyclodextrin-functionalized hydrophobically associating polyacrylamide named ASM was carried out using acrylamide (AM), cetyl dimethyl allyl ammonium bromide (SD-16) and modified β-cyclodextrin (M-β-CD) via free-radical copolymerization. Effective characterization methods, including FT-IR, ¹H NMR and TGA, were adopted to evaluate ASM. Influences of SiO₂ nanoparticle (nano-SiO₂) on ASM solution properties were evaluated. The results showed that the addition of nano-SiO₂ significantly increased the temperature resistance, salt tolerance and shear resistance of the ASM solution. It was found that ASM/SiO₂ composite had 1.5 times higher viscosity than ASM in the range of 25–90 °C. The FT-IR data confirmed that the formation of hydrogen bond between silanol groups at surface of nano-SiO₂ and amide group, hydroxyl group of M-β-CD in ASM molecule contributed to the improved performance. What^’s more, viscoelastic test indicated that nano-SiO₂ remarkably facilitated the cross-links among polymer molecules and enhanced the elasticity of ASM/SiO₂ composite. Based on the enhanced oil recovery tests, the oil recovery could remarkably enhance 10.08% for composite versus only 6.56% for ASM.

通过丙烯酰胺（AM），十六烷基二甲基烯丙基溴化铵（SD-16）和改性的β-环糊精（M-β-CD）通过自由基共聚反应合成名为ASM的新型β-环糊精官能化疏水缔合聚丙烯酰胺。 。采用有效的表征方法，包括FT-IR，¹ H NMR和TGA，来评估ASM。评估了SiO ₂纳米颗粒（nano-SiO ₂）对ASM溶液性能的影响。结果表明，纳米SiO _2的添加显着提高了ASM溶液的耐温性，耐盐性和抗剪切性。发现ASM / SiO ₂在25–90°C的温度范围内，复合材料的粘度是ASM的1.5倍。FT-IR数据证实，纳米SiO ₂表面的硅烷醇基与ASM分子中M-β-CD的酰胺基，羟基之间形成氢键，有助于提高性能。什么^“更多的是，粘弹性试验表明，纳米的SiO ₂显着地促进了聚合物分子间的交联和增强的ASM /二氧化硅的弹性₂复合物。根据增强的采油率测试，复合材料的采油率可以显着提高10.08％，而ASM仅为6.56％。