Abstract
Two azobenzene compounds, Disperse Red 1 (DR1) and 4-aminoazobenzene (Aazo), were separately linked to poly(acrylic acid) (PAA) side chains to form PAA-DR1 and PAA-Aazo, which were then associated with poly(ethylene oxide) (PEO) to produce hydrogen-bonded polymer complex fibers. After UV irradiation, the initial modulus and yielding strength of PAA-Aazo/PEO fiber were both increased tremendously, while the mechanical properties of PAA-DR1/PEO fiber only slightly changed. After drawn and dried in vacuum, PAA-DR1/PEO and PAA-Aazo/PEO fibers with an extended length exhibited a contraction of 20% and 25% under UV irradiation, showing potential for photo-actuation.
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Acknowledgements
The work was financially supported by National Natural Science Foundation of China (No. 51973029), and Science and Technology Commission of Shanghai Municipality (No. 20JC1414900).
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Zhu, M., Wang, W., Zhang, C. et al. Photo-responsive Behaviors of Hydrogen-Bonded Polymer Complex Fibers Containing Azobenzene Functional Groups. Adv. Fiber Mater. 3, 172–179 (2021). https://doi.org/10.1007/s42765-021-00080-0
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DOI: https://doi.org/10.1007/s42765-021-00080-0