Swelling Resistance and Water-Induced Shape Memory Performances of Sisal Cellulose Nanofibers/Polyethylene Glycol/Citric Acid Nanocellulose Papers
Swelling Resistance and Water-Induced Shape Memory Performances of Sisal Cellulose Nanofibers/Polyethylene Glycol/Citric Acid Nanocellulose Papers
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DOI：
10.1155/2019/4304532
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发表时间：
2019-07
影响因子：
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通讯作者：
Zuocai Zhang;Yuqi Li;Laifu Song;L. Ren;Xu Xu-Xu;Shao-rong Lu
中科院分区：
文献类型：
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作者：
Zuocai Zhang;Yuqi Li;Laifu Song;L. Ren;Xu Xu-Xu;Shao-rong Lu
以剑麻纤维素纳米纤维（CNF）和聚乙二醇（PEG）为基体，柠檬酸（CA）为交联剂，通过蒸发诱导自组装制备了一种纳米复合纸。CNF/PEG/CA复合纸具有良好的抗水溶胀性能，可通过改变CA的浓度来控制。此外，该纳米复合纸还具有良好的力学性能和水致形状记忆性能。特别地，当CA的用量为30重量%时，溶胀后的CNF/PEG/CA纸的拉伸强度和拉伸模量分别为25.2MPa和813.0MPa。此外，这种纳米复合材料显示出巨大的潜力，水诱导形状记忆材料具有快速响应速度。当质量分数为30%时，CNF/PEG/CA纸的形状回复率（Rr）达到90.2%。CA在水中浸泡11 s后。预计我们目前的工作可以用来探索更有效的方法来克服纤维素基形状记忆材料的耐水性差。
In this work, a kind of nanocomposite paper was obtained by evaporation-induced self-assembly of a mixture of sisal cellulose nanofibers (CNF) and polyethylene glycol (PEG) as the matrix and citric acid (CA) as a cross-linking agent. The CNF/PEG/CA paper exhibited good water swelling resistance which could be controlled by changing the concentration of CA. In addition, this nanocomposite paper exhibited good mechanical properties and water-induced shape memory performance. In particular, when the dosage of CA was 30 wt.%, the tensile strength and the tensile modulus of the CNF/PEG/CA paper after swelling were 25.2 MPa and 813.0 MPa, respectively. Further, this nanocomposite showed great potential for water-induced shape memory materials with fast response speed. The shape recovery rate (Rr) of the CNF/PEG/CA paper reached 90.2% with 30 wt.% CA after being immersed in water for 11 s. It is anticipated that our current work can be used to exploit more efficient methods to overcome the poor water swelling resistance of the cellulose-based shape memory materials.