Dual Nanofillers-Reinforced Noncovalently Cross-Linked Polymeric Composites with Unprecedented Mechanical Strength

Abstract

Open AccessCCS ChemistryRESEARCH ARTICLES9 Dec 2022Dual Nanofillers-Reinforced Noncovalently Cross-Linked Polymeric Composites with Unprecedented Mechanical Strength Ni An, Youliang Zhu, Xiaohan Wang, Yixuan Li, Junjun Liu, Xu Fang, Zhongyuan Lu, Bai Yang and Junqi Sun Ni An Google Scholar More articles by this author , Youliang Zhu Google Scholar More articles by this author , Xiaohan Wang Google Scholar More articles by this author , Yixuan Li Google Scholar More articles by this author , Junjun Liu Google Scholar More articles by this author , Xu Fang Google Scholar More articles by this author , Zhongyuan Lu Google Scholar More articles by this author , Bai Yang Google Scholar More articles by this author and Junqi Sun Google Scholar More articles by this author https://doi.org/10.31635/ccschem.022.202202496 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Noncovalently cross-linked polymer materials can reduce materials consumption and alleviate environmental pollution through healing, recycling, and reprocessing. However, it remains a huge challenge to fabricate superstrong noncovalently cross-linked polymer materials with mechanical strength comparable to highperformance engineering polymers. Herein, healable and reprocessable noncovalently cross-linked polymer composites with an unprecedented mechanical strength are fabricated by complexation of polyacrylic acid (PAA), polyvinylpyrrolidone (PVPON) and carbonized polymer dots (CPDs) (denoted as PAA-PVPON-CPDs). The incorporation of 15 wt% CPDs generates PAA-PVPON-CPDs composites with a tensile strength of ~158 MPa and Young’s modulus of ~8.2 GPa. Serving as nanofillers, the CPDs can establish strong interactions with polymers in PAA-PVPON composites. The CPDs and the in situ-formed PAA-PVPON nanoparticles work in concert to significantly strengthen the PAA-PVPON-CPDs composites to an unprecedented strength. The PAAPVPON-CPDs composites exhibit excellent impact resistance and damage tolerance because of the high mechanical strength of the composites and the energy dissipation mechanism of the CPDs and PAA-PVPON nanoparticles. Moreover, the fractured PAA-PVPON-CPDs composites can be healed to restore their original mechanical strength. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentVolume 0Issue jaPage: 1-27Supporting Information Copyright & Permissions© 2022 Chinese Chemical Society Downloaded 53 times PDF downloadLoading ...