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Fluorescent cellulose nanocrystals (fCNCs) have shown a great potential as optical probe for the applications of bioimaging or metal ion detection. In this work, by a controllable esterification strategy, the cellulose nanocrystal (CNC) surface was modified with ethylenediaminetetraacetic dianhydride (EDTAD) to achieve highly carboxylation degree, and, meanwhile, keep surface integration and crystalline...
Research on nanocellulose has significantly increased over the past few decades, owing to the various attractive characteristics of this material, such as renewability, widespread availability, low density, excellent mechanical properties, economic value, biocompatibility, and biodegradability. Nanocellulose categorized into two main types, namely cellulose nanofibrils (CNFs) and cellulose nanocrystals...
The development of nanocellulose and nanocellulose-based composites and materials has attracted significant interest in recent decades because they show unique and potentially useful features, including abundance, renewability, high strength and stiffness, eco-friendliness, and low weight. This review addresses critical factors in the manufacturing of nanocellulose composites, followed by introducing...
Cellulose nanocrystal is a promising reinforcing filler derived from biomass resources, but its application is limited due to poor dispersibility in organic solvents (as the blending media), lower thermal stability that is mismatched with the processing temperature, poor miscibility with the hydrophobic polymer matrix and resultant self‐aggregation, and so on. Consequently, surface modification of...
Hydrophobic cellulose nanocrystals (CNs) have been prepared by grafting isocyanate-terminated castor oil, a kind of natural vegetable oil, onto their surface. The existence of castor oil component in the modified cellulose nanocrystals was verified by Fourier transform infrared spectroscopy, solid-state 13C NMR spectra and X-ray photoelectron spectroscopy. At the same time, X-ray diffraction and transmission...
A novel and facile method for surface acetylation of cellulose nanocrystals (CN) was developed by reaction with acetic anhydride and hydroxyl groups on the surface of CN. The resultant acetylated cellulose nanocrystals (ACN) exhibited improved dispersion in various organic solvents and reduced polarity as compared with unmodified CN. These ACN were subsequently introduced into a poly(lactic acid)...
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