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Theoretical Model of Time–Temperature Superposition Principle of the Self‐Healing Kinetics of Supramolecular Polymer Nanocomposites
Author(s) -
Zheng Zijian,
Xia Xiuyang,
Zeng Xianxiang,
Li Xiu,
Wu Youping,
Liu Jun,
Zhang Liqun
Publication year - 2018
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800382
Subject(s) - materials science , superposition principle , nanocomposite , time–temperature superposition , polymer , polymer nanocomposite , ultimate tensile strength , supramolecular polymers , kinetics , supramolecular chemistry , self healing , dispersion (optics) , composite material , chemical physics , nanotechnology , classical mechanics , chemistry , physics , molecule , optics , medicine , alternative medicine , organic chemistry , quantum mechanics , pathology
The matrix‐free polymer nanocomposites (PNCs) formed by polymer‐grafted nanoparticles(NPs) gain enormous attention due to their controllable morphology and robust properties. Herein, through molecular dynamics simulation, such PNCs are successfully constructed, and the dispersion state of the NPs can be tailored by varying the grafting density. By manipulating the interaction strength between the end groups of the grafted polymer chains, the tensile fracture behavior and the chain orientation are examined. It is revealed that both of them fall down at large strain because of the propagation of the cavities. By probing the self‐healing kinetics at various self‐healing temperature and time, a time−temperature superposition principle, similar to the Williams, Landel and Ferry equation, is proposed. These results could provide some fundamental guidelines for the design and fabrication of high performance PNCs with excellent self‐healing functionality.