Synthesis and Characteristics of Thermo-Photo Staged-Response Shape Memory Poly(aryl ether ketone)s

Stimuli-response materials have attracted considerable attention due to their potential applications in sensoring, smart coatings, and intelligent devices. Herein a novel thermo-photo staged response shape memory poly(aryl ether ketone) bearing flexible alkyl segments and azobenzene groups was succe...

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Bibliographic Details
Published in:Macromolecular research 2020, 28(5), , pp.450-454
Main Authors: Gu, Yiyang, Zhao, Zhen, Chao, Danming, Liu, Xincai
Format: Article
Language:English
Subjects:
Aromatic compounds
Biodegradable materials
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Dynamic mechanical analysis
Fourier transforms
Gravimetric analysis
Heat treatment
Infrared analysis
Isomerization
Magnetic properties
Mechanical properties
Nanochemistry
Nanotechnology
NMR
Nuclear magnetic resonance
Physical Chemistry
Polymer films
Polymer Sciences
Polymers
Shape effects
Shape memory
Soft and Granular Matter
Spectrum analysis
Stimuli
Thermal response
Thermal stability
Ultraviolet radiation
고분자공학
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Summary:Stimuli-response materials have attracted considerable attention due to their potential applications in sensoring, smart coatings, and intelligent devices. Herein a novel thermo-photo staged response shape memory poly(aryl ether ketone) bearing flexible alkyl segments and azobenzene groups was successfully designed and synthesized. Its chemical structure, thermostability and mechanical properties were characterized through Fourier Transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, thermal gravimetric analysis and dynamic mechanical analysis. The resultant polymer disclosed thermo-/photo-dual stimuli-response behaviors, ascribed to its unique chemical structure. Firstly, the polymer film exhibited good thermal response shape memory effect with satisfied shape fixity ratio ( R f ) and shape recovery ratio ( R r ) (>99%). Moreover, an interesting photo-thermo two-staged responsive shape memory behavior with bending deformation over 100° upon the exposure of ultraviolet light and recovering to its original state through thermal treatment was revealed, attributed to the transcis isomerization of azobenzene groups.
ISSN:1598-5032
2092-7673
DOI:10.1007/s13233-020-8061-9