Two dimensional MoS₂ nanosheet is a promising nanofiller for the improvement of polymer properties, yet a significant challenge lies in scalable preparation of MoS₂ nanosheets with tailor-made surface to form good compatibility with polymer. Herein, a carboxyl-rich poly(ionic liquid)-PCMVIm is molecularly designed to mediate the exfoliation and functionalization of MoS₂ nanosheets. On the one hand, the immobilized PCMVIm strengthens the interfacial interactions between MoS₂ and PAN chains by forming hydrogen-bonding interactions, resulting in a 55% and 70.9% increase in tensile strength and elongation at break of 2 wt% PCMVIm-MoS₂/PAN composite fiber. On the other hand, the PCMVIm-MoS₂ initiates the intermolecular cyclization of PAN via ionic mechanism and induces the production of MoS₂-bridged graphitic nano-barrier networks, which significantly decrease the PHRR, PSPR and COP of 2 wt% PCMVIm-MoS₂/PAN composite fiber by 48.7%, 51.4% and 63.5%, respectively.

二维MoS ₂纳米片是一种很有前途的用于改善聚合物性能的纳米填料，但一个重大挑战在于可扩展制备具有定制表面的MoS ₂纳米片以与聚合物形成良好的相容性。在此，富含羧基的聚（离子液体）-PCMVIm 被分子设计为介导 MoS ₂纳米片的剥离和功能化。一方面，固定化的 PCMVIm通过形成氢键相互作用加强了 MoS ₂和 PAN 链之间的界面相互作用，导致 2 wt% PCMVIm-MoS ₂ / 的拉伸强度和断裂伸长率分别提高了 55% 和 70.9%。 PAN复合纤维。另一方面，PCMVIm-MoS ₂通过离子机制引发PAN的分子间环化并诱导产生MoS _{2 -}桥接石墨纳米屏障网络，这显着降低了2 wt% PCMVIm-MoS ₂ /PAN复合纤维的PHRR、PSPR和COP 48.7%, 51.4 % 和 63.5%，分别。