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Erschienen in: Cellulose 9/2019

26.04.2019 | Original Research

Self-healing nanocomposite hydrogels based on modified cellulose nanocrystals by surface-initiated photoinduced electron transfer ATRP

verfasst von: Liangjiu Bai, Xinyan Jiang, Zhixiang Sun, Zhaoxia Pei, Anyao Ma, Wenxiang Wang, Hou Chen, Huawei Yang, Lixia Yang, Donglei Wei

Erschienen in: Cellulose | Ausgabe 9/2019

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Abstract

Self-healing hydrogels with excellent toughness and mechanical strength are particularly desirable for practical application. In this paper, green and environmentally friendly cellulose nanocrystals (CNCs) were successfully modified on the surface via metal-free photoinduced electron transfer atom transfer radical polymerization (PET-ATRP). Surface-initiated PET-ATRP was achieved by using 4-vinylpyridine (4VP) as functional monomer, 10-phenylphenothiazine (Ph-PTZ) as photocatalyst and ultraviolet light (365 nm) as light source, respectively. The prepared P4VP-CNCs hybrid materials (CNCs@P4VP) were used as green reinforcement to obtain self-healing nanocomposite hydrogels by electrostatic interactions. As a result, the nanocomposite hydrogels displayed outstanding mechanical (6.6 MPa at a strain of 921.6%) and self-healing (85.9% after repairing 6 h) properties. This work provides a promising green method for designing novel self-healing nanocomposite hydrogels with high strength.

Graphical abstract

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Literatur
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Metadaten
Titel
Self-healing nanocomposite hydrogels based on modified cellulose nanocrystals by surface-initiated photoinduced electron transfer ATRP
verfasst von
Liangjiu Bai
Xinyan Jiang
Zhixiang Sun
Zhaoxia Pei
Anyao Ma
Wenxiang Wang
Hou Chen
Huawei Yang
Lixia Yang
Donglei Wei
Publikationsdatum
26.04.2019
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 9/2019
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-019-02449-2

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