It is a long-term pursuit, and also, a challenge to significantly improve the mechanical strength of thermoplastic polymers using readily dispersed polymers as nanofillers. In this study, we demonstrated that in situ formed carboxylic acid-functionalized poly(aryl ether sulfone) (PAES–COOH)/polyvinylpyrrolidone (PVPON) complex nanoparticles can significantly enhance the mechanical strength of PAES–COOH by mixing PAES–COOH with a small fraction of PVPON. The PAES–COOH/PVPON10% composite, which contained ∼10 wt % PVPON, exhibited a tensile strength of ∼104.8 MPa and Young’s modulus of ∼932.2 MPa, which were ∼2.0 and ∼1.7 times higher than those of the PAES–COOH, respectively. The PAES–COOH/PVPON nanoparticles which were uniformly dispersed in PAES–COOH matrices and had strong hydrogen-bonding interactions with PAES–COOH, served as nanofillers to reinforce the mechanical strength of the PAES–COOH. The PAES–COOH/PVPON10% composites possessed excellent solvent-assisted healability, and the fractured composites could be healed to restore their original mechanical strength. Meanwhile, the PAES– COOH/PVPON10% composites could be recycled multiple times, and yet retained their shape integration and their original mechanical strength.

中文翻译：

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高分子复合纳米颗粒能够制造机械上超强且可回收的聚（芳醚砜）基聚合物复合材料

使用易于分散的聚合物作为纳米填料来显着提高热塑性聚合物的机械强度是一项长期的追求，也是一项挑战。在这项研究中，我们证明了原位形成的羧酸官能化聚（芳基醚砜）（PAES–COOH）/聚乙烯吡咯烷酮（PVPON）复合纳米颗粒可以通过将PAES–COOH与一小部分的PVPON。PAES-COOH / PVPON10％的复合材料（含约10 wt％的PVPON）表现出约104.8 MPa的拉伸强度和约932.2 MPa的杨氏模量，分别比PAES-高2.0到1.7倍。 COOH，分别。PAES–COOH / PVPON纳米颗粒均匀地分散在PAES–COOH基质中，并且与PAES–COOH具有很强的氢键相互作用，用作纳米填料以增强PAES-COOH的机械强度。PAES-COOH / PVPON10％复合材料具有出色的溶剂辅助修复性，可以对断裂的复合材料进行修复以恢复其原始机械强度。同时，PAES-COOH / PVPON10％复合材料可以多次回收，但仍保持其形状整合性和原始机械强度。