In our strategy, polystyrene (PS) and poly(styrene‐acrylonitrile) (P(S‐AN)) macromolecular microspheres (MMs) were introduced within hydrophobically associated (HA) hydrogels to enhance their mechanical strength. Two series of MMs hydrophobically associated polyacrylamide composite hydrogels (MMHA gels) were fabricated by a simple one‐pot method. The mechanical, rheological and swelling properties of MMHA gels were investigated and also evaluated as a function of the content of MMs. The mechanical properties of MMHA gels exhibit a tendency to increase first and then decrease with the increase in MMs content. In addition, the structure of the MMHA hydrogels was investigated by the IR and SEM analysis. The results were consistent with the result of mechanical, self‐healing and swelling properties test. Impressively, compared with MMHA gels enhanced by PS MMs (SHA gels), MMHA gels enhanced by P(S‐AN) MMs (SNHA gels) showed better mechanical properties(tensile strength 550 KPa, elongation at break 2832%)due to the strong dipole‐dipole interactions of ‐CN groups from acrylonitrile. Furthermore, the oil/water separation capability of the SNHA gels was explored preliminarily. Our strategy shows a novel direction for the production of tough hydrogels with various potential applications.

中文翻译：

---

以聚苯乙烯-丙烯腈大分子微球为交联中心的健壮和自修复的疏水缔合水凝胶

在我们的策略中，将聚苯乙烯（PS）和聚（苯乙烯-丙烯腈）（P（S-AN））高分子微球（MMs）引入与疏水相关的（HA）水凝胶中，以增强其机械强度。通过简单的一锅法制备了两个系列的MMs疏水缔合的聚丙烯酰胺复合水凝胶（MMHA凝胶）。对MMHA凝胶的机械，流变和溶胀特性进行了研究，并根据MMs含量对其进行了评估。MMHA凝胶的机械性能表现出先增加然后再随MMs含量降低而降低的趋势。另外，通过IR和SEM分析研究了MMHA水凝胶的结构。结果与机械，自愈和溶胀性能测试的结果一致。令人印象深刻 与PS MM（SHA凝胶）增强的MMHA凝胶相比，P（S-AN）MM（SNHA凝胶）增强的MMHA凝胶表现出更好的机械性能（抗张强度550 KPa，断裂伸长率2832％），这归因于强大的偶极子-丙烯腈-CN基的偶极相互作用。此外，初步探索了SNHA凝胶的油/水分离能力。我们的策略为生产具有各种潜在用途的坚韧水凝胶显示了一个新的方向。