To develop elastomers with excellent mechanical properties and processability, block copolymer-based thermoplastic elastomers (TPEs) with dynamic noncovalent cross-links have been actively studied in recent years. Most previous studies on such block copolymer-based TPEs have focused on incorporation of hydrogen-bonded cross-links into the block with a glass transition temperature lower than room temperature; however, the difference between the mechanical properties of hydrogen-bonded TPEs and those of other noncovalent-bonded TPEs has been hardly discussed. This work uses the polystyrene-b-polyisoprene-b-polystyrene (SIS) triblock copolymer produced in industry to synthesize hydrogen-bonded (hSIS) and ionically functionalized thermoplastic elastomers (iSIS) and compares their mechanical properties. iSIS is much tougher than hSIS; remarkably, iSIS exhibits an excellent toughness of 480 MJ m⁻³, because the ionic multiplets in iSIS serve as much more strongly associated but reversible cross-links. Since the elastomers can be produced at industry scale, they have great market potential for becoming next-generation elastomeric materials.

为了开发具有优异机械性能和可加工性的弹性体，近年来已积极研究了具有动态非共价交联键的基于嵌段共聚物的热塑性弹性体（TPE）。以前有关这种基于嵌段共聚物的TPE的大多数研究都集中于在玻璃化转变温度低于室温的条件下将氢键结合的交联引入嵌段。然而，几乎没有讨论氢键合的TPE和其他非共价键合的TPE的机械性能之间的差异。这项工作使用聚苯乙烯b -polyisoprene- b-工业上生产的聚苯乙烯（SIS）三嵌段共聚物，用于合成氢键（hSIS）和离子官能化的热塑性弹性体（iSIS），并比较它们的机械性能。iSIS比hSIS困难得多。值得注意的是，iSIS表现出480 MJ m ^-3的出色韧性，因为iSIS中的离子多重峰具有更强的缔合但可逆的交联。由于弹性体可以工业规模生产，因此它们具有成为下一代弹性体材料的巨大市场潜力。