Photo-responsive Behaviors of Hydrogen-Bonded Polymer Complex Fibers Containing Azobenzene Functional Groups

Miaomiao Zhu; Weijie Wang; Caihong Zhang; Liping Zhu; Shuguang Yang

doi:10.1007/s42765-021-00080-0

Advanced Fiber Materials ›› 2021, Vol. 3 ›› Issue (3) : 172-179. DOI: 10.1007/s42765-021-00080-0

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Photo-responsive Behaviors of Hydrogen-Bonded Polymer Complex Fibers Containing Azobenzene Functional Groups

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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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Miaomiao Zhu, Weijie Wang, Caihong Zhang, Liping Zhu, Shuguang Yang. Photo-responsive Behaviors of Hydrogen-Bonded Polymer Complex Fibers Containing Azobenzene Functional Groups. Advanced Fiber Materials, 2021, 3(3): 172‒179 https://doi.org/10.1007/s42765-021-00080-0