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Recyclable and Dual Cross‐Linked High‐Performance Polymer with an Amplified Strength–Toughness Combination
Author(s) -
Du Mengqi,
Yang Li,
Liao Cong,
Diangha Tasah Philas,
Ma Yuanchi,
Zhang Lin,
Lan Yang,
Chang Guanjun
Publication year - 2020
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.201900606
Subject(s) - polymer , toughness , supramolecular chemistry , toughening , materials science , dual (grammatical number) , supramolecular polymers , cross link , polymer network , composite material , polymer chemistry , polymer science , chemical engineering , chemistry , molecule , organic chemistry , art , literature , engineering
Supramolecular chemistry has provided versatile and affordable solutions for the design of tough, flexible polymers. However, application of supramolecular chemistry has been limited to the production of rigid, high‐performance polymers due to weak segment mobility. This paper describes a new method of toughening rigid high‐performance polymers using the synergistic effect between dual Cu 2+ ‐coordination bonds as a crosslink. These dual Cu 2+ ‐coordination cross‐linked high‐performance polymers are a class of rigid polymers with an outstanding combination of strength and toughness. The distinct lifetimes and binding strengths of the dual Cu 2+ ‐coordination bonds in a rigid polymer network elicit different dynamic behaviors to improve its energy dissipation and mechanical properties. Moreover, the reformation and removal of Cu 2+ ‐coordination bonds by pyrophosphoric acid endows these cross‐linked high‐performance polymers with recyclability.