Multi-stimuli-responsive photonics films based on chiral nematic cellulose nanocrystals

被引:27
作者
Meng, Yahui [1 ,4 ]
He, Zhibin [2 ]
Dong, Cuihua [3 ]
Long, Zhu [1 ]
机构
[1] Jiangnan Univ, Key Lab Ecotext, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China
[2] Univ New Brunswick, Limerick Pulp & Paper Ctr, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada
[3] Qilu Univ Technol, Key Lab Biobased Mat & Green Papermaking, Jinan 250353, Peoples R China
[4] Zhejiang Univ Sci & Technol, Sch Environm & Nat Resources, Hangzhou 310023, Peoples R China
关键词
Multi-stimuli responsive; Cellulose nanocrystal; Sorbitol; Anthocyanin; ANTHOCYANIN; NANOCOMPOSITES; PIGMENTS; COLOR; INKS;
D O I
10.1016/j.carbpol.2021.118756
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Multiple-stimuli-responsive bio-based materials have received considerable attention for intelligent packaging and anti-counterfeiting applications. Herein, we present a unique biobased photonics film with multi-stimuli responsive behavior based on cellulose nanocrystals (CNCs), sorbitol (S) and anthocyanin (Anth). The resulting photonics film exhibits multi-stimuli responsive behavior to humidity, solvent and pH stimuli. Notably, the photonics film showed dramatic invertible color from blue to fuchsia and high sensitivity at a relative humidity from 50% to 100%. Moreover, the photonics film exhibited fast response and good reversibility under different ethanol concentrations. Significant color changes of the photonics film were also observed in response to pH change in the range of 2 to 12. Particularly, the humidity, solvent and pH responsiveness of the photonics film did not interfere with each other.
引用
收藏
页数:9
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