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In the present study, we report novel sheet-like cellulose nanocrystal–zinc oxide nanohybrids (CNC–ZnO) by using a one-step hydrothermal method. Various concentrations of Zn2+ ions were functionalized in CNC surface and a possible mechanism for the formation of CNC–ZnO nanohybrids with hexagonal sheet-like structure converted to the flower-like structure was also presented. Additionally, the sheet-like...
Textile manufacturing industries produce large amounts of viscose fiber wastes (VFW), causing serious environmental pollution. This study presents an acid-free approach to prepare spherical cellulose nanocrystals (SCNs) with carboxyl groups from industrial VFW by one-step hydrothermal ammonium persulfate (APS) oxidation. Novel double-response surface methodology was employed to optimize the reaction...
Electrospun poly(lactic acid) (PLA) nanofibers would seem be poor carriers for drug delivery due to their hydrophobicity, high crystallinity, weak mechanical strength and burst drug release due to poor compatibility with hydrophilic drugs. Thus, in this work, cellulose nanocrystals (CNC) as reinforcing agents and polyethylene glycol (PEG) as a compatibilizer to increase dispersion of both CNC and...
Electrospinning was used to fabricate bioactive nanofibrous membranes from cellulose nanocrystal-ZnO (CNC-ZnO) nanohybrids as reinforcing materials in biodegradable poly(3-hydroxybutyrate-co-3-hydroxy-valerate) (PHBV) for potential use as wound dressings. Incorporation of CNC-ZnO considerably improved the uniformity and reduced the diameter of PHBV nanofibers with porosity in the range of 14–56%....
A facile chemical precipitation approach is presented to fabricate flower-like zinc oxide (ZnO) nanorod clusters by using spherical cellulose nanocrystals (SCNs, with cellulose II crystal structure) as growth substrate. Field-emission scanning electron microscopy results showed that nanohybrids (A-100/11) with flower-like ZnO nanorod clusters could be formed under strongly alkaline (pH 11) conditions...
Functionalized cellulose nanospheres (spherical nanocellulose formates, SCNFs) were extracted by one-step HCOOH/HCl hydrolysis of lyocell fibers with cellulose II crystal structure. The as-prepared cellulose nanoparticles were characterized by field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectrometry, X-ray photoelectron...
Cellulose nanocrystal/zinc oxide (CNC/ZnO) nanohybrids were prepared through citric acid/hydrochloric acid hydrolysis of commercial microcrystalline cellulose (MCC), and simple precipitation with zinc nitrate aqueous solution [Zn(NO3)2·6H2O] via one-pot green synthesis, in which preparation and modification of CNCs were performed simultaneously and the obtained CNCs with carboxyl groups could act...
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