Jiawei Hu , Jianglu Teng , Guohua Hang, Zixian Li, Xibin Shen, Huaming Wang, Lei Li, Sixun Zheng
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引用次数: 0
Abstract
A linear polyamine (PEA) was synthesized and then crosslinked with diisocyanates. The crosslinking led to the integration of benzyl hindered urea bonds (HUBs) into the PEA networks. First, the Schiff base reaction of terephthaldicarboxaldehyde with a polymeric diamine bearing poly(ethylene oxide) (PEO) block was carried out to generate a linear poly(ether imine), which was then transformed into the PEA through hydrogenation reaction. By taking control of types and contents of diisocyanates, the PEA networks were regulated displaying variable thermomechanical properties. More importantly, the PEA networks can be reprocessable (or recyclable); the dynamic exchange of benzyl HUBs was responsible for the excellent reprocessing (recycling) properties. Thanks to the crosslinking, the PEA networks had the shape memory properties featuring the reconfigurability. Benefiting from the integration of PEO blocks, the PEA networks can be converted into the solid polyelectrolytes (SPEs). Incorporated with an electrolyte [e.g., lithium bis(trifluoromethanesulphonyl)imide, LiTFSI], the networks can have the ionic conductivity as high as 7.1 × 10−5 S × cm−1 at 300 K. Notably, the SPEs integrated with benzyl HUBs were recyclable without sacrificing the ionic conductivity.
期刊介绍:
Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics.
The main scope is covered but not limited to the following core areas:
Polymer Materials
Nanocomposites and hybrid nanomaterials
Polymer blends, films, fibres, networks and porous materials
Physical Characterization
Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films
Polymer Engineering
Advanced multiscale processing methods
Polymer Synthesis, Modification and Self-assembly
Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization
Technological Applications
Polymers for energy generation and storage
Polymer membranes for separation technology
Polymers for opto- and microelectronics.