Interfacial challenges in unconventional oil extraction include heavy oil–water–solid multiphase separation and corrosion inhibition. Herein, a novel strategy based on interfacial hydrogen bonding reconstruction is proposed for constructing multifunctional interfacially active materials (MIAMs) to address multi-interfacial separation needs. A simple one-pot method is applied to successfully synthesize four different MIAM varieties, integrating site groups (–NH, OSO, –COOH, and Si–O–Si) with multiple hydrogen bonds (HBs) into allyl polyether chains. The results indicate that all synthesized MIAMs excel in demulsification, detergency, and corrosion inhibition simultaneously, even at 25 °C. Their dehydration efficiency for different water-in-oil emulsions (even heavy oil emulsion) surpasses 99.9 % even at 16 °C, showing their excellent energy-saving potential for field applications. Furthermore, they demonstrate effective, nondestructive static cleaning (up to 86 %) of adhered oil from solid surfaces at 25 °C and provide corrosion inhibition effects (up to 92.09 %) on mild steel immersed in saturated brine. Mechanistic tests reveal that incorporating multiple HB sites in MIAMs dramatically enhances their effectiveness in interfacial separations. Based on these findings, an HB-dominated noncovalent interaction reconstruction strategy is tentatively proposed to develop advanced materials for low-carbon, efficient interfacial separations.

中文翻译：

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掺杂杂原子形成多个氢键位点，以增强界面重建和分离


非常规石油开采中的界面挑战包括重油-水-固多相分离和腐蚀抑制。在此，提出了一种基于界面氢键重构的新策略，用于构建多功能界面活性材料（MIAM），以满足多界面分离需求。应用简单的一锅法成功合成了四种不同的 MIAM 品种，将具有多个氢键 (HBs) 的位点基团（–NH、OSO、–COOH 和 Si–O–Si）整合到烯丙基聚醚链中。结果表明，所有合成的 MIAM 均同时具有出色的破乳性、去污力和缓蚀性，即使在 25 °C 下也是如此。即使在 16 °C 下，它们对不同油包水乳液（甚至重油乳液）的脱水效率也超过 99.9%，显示出其在现场应用中出色的节能潜力。此外，它们还能够在 25°C 下有效、无损地静态清洁固体表面附着的油污（高达 86%），并对浸入饱和盐水中的低碳钢提供腐蚀抑制效果（高达 92.09%）。机械测试表明，在 MIAM 中加入多个 HB 位点可显着提高其界面分离的效率。基于这些发现，初步提出了以HB为主的非共价相互作用重构策略，以开发用于低碳、高效界面分离的先进材料。