scholarly journals Supramolecular Hydrogels from In Situ Host–Guest Inclusion between Chemically Modified Cellulose Nanocrystals and Cyclodextrin

2013 ◽  
Vol 14 (3) ◽  
pp. 871-880 ◽  
Author(s):  
Ning Lin ◽  
Alain Dufresne
Keyword(s):  
Cellulose Nanocrystals ◽  
Chemically Modified ◽  
Modified Cellulose

scholarly journals Chemically modified cellulose nanocrystals as polyanion for preparation of polyelectrolyte complex

Cellulose ◽  
2019 ◽  
Vol 26 (3) ◽  
pp. 1725-1746
Author(s):  
Niédja Fittipaldi Vasconcelos ◽  
Judith Pessoa Andrade Feitosa ◽  
Fábia Karine Andrade ◽  
Marcus Aurélio Ribeiro Miranda ◽  
José Marcos Sasaki ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Polyelectrolyte Complex ◽  
Chemically Modified ◽  
Modified Cellulose

scholarly journals A novel adsorbent  features like EDTA synthesized in situ by chemically modified cellulose and its behavior in metal ions adsorption from aqueous solution

2021 ◽  
Author(s):  
Tao Hu ◽  
Xiaoli Hu ◽  
Cheng Tang ◽  
Dan Liu
Keyword(s):  
Aqueous Solution ◽  
Metal Ions ◽  
Competitive Adsorption ◽  
Aminoacetic Acid ◽  
Chemically Modified ◽  
Adsorption Behaviors ◽  
Chemical Grafting ◽  
Modified Cellulose ◽  
C Nmr

Abstract This paper describes the synthesis of a novel chelating material derived from cellulose, and its heavy metal ions adsorption behavior from aqueous solution. The first section of this paper reports the chemical grafting of cellulose, that aminoacetic acid groups were grafted into the cellulose, resulted a novel yet unreported modified cellulose derivative N,N-(dicarboxymethylaminoethyl, carboxymethyl) aminoethylamine carboxymethyl cellulose amide. This obtained adsorbent was characterized by elemental analysis, infrared spectroscopy (IR) and Solid State Nuclear Magnetic Resonance (SSNMR) 13 C NMR spectroscopy. In the second section, adsorption behaviors such as kinetic study, adsorption isotherms of the adsorbent for Cu 2+ and Pb 2+ single metal ions from aqueous solution, and adsorption capacity for Ba 2+ , Mg 2+ , Mn 2+ , Co 2+ , Zn 2+ , Pb 2+ , Ni 2+ and Cu 2+ , and the competitive adsorption of this adsorbent between ions were evaluated by ICP spectroscopy.

Tuning the Magnetic Alignment of Cellulose Nanocrystals from Perpendicular to Parallel Using Lepidocrocite Nanoparticles

2019 ◽  
Author(s):  
Valentina Guccini ◽  
Sugam Kumar ◽  
Yulia Trushkina ◽  
Gergely Nagy ◽  
Christina Schütz ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Cellulose Nanocrystals ◽  
Small Angle Neutron Scattering ◽  
Lower Amount ◽  
Magnetic Alignment ◽  
Polarized Optical Microscopy ◽  
Parallel Orientation ◽  
Weak Magnetic Fields

The magnetic alignment of cellulose nanocrystals (CNC) and lepidocrocite nanorods (LpN), pristine and in hybrid suspensions has been investigated using contrast-matched small-angle neutron scattering (SANS) under in situ magnetic fields (0 – 6.8 T) and polarized optical microscopy. The pristine CNC (diamagnetic) and pristine LpN (paramagnetic) align perpendicular and parallel to the direction of field, respectively. The alignment of both the nanoparticles in their hybrid suspensions depends on the relative amount of the two components (CNC and LpN) and strength of the applied magnetic field. In the presence of 10 wt% LpN and fields < 1.0 T, the CNC align parallel to the field. In the hybrid containing lower amount of LpN (1 wt%), the ordering of CNC is partially frustrated in all range of magnetic field. At the same time, the LpN shows both perpendicular and parallel orientation, in the presence of CNC. This study highlights that the natural perpendicular ordering of CNC can be switched to parallel by weak magnetic fields and the incorporation of paramagnetic nanoparticle as LpN, as well it gives a method to influence the orientation of LpN.<br>

Octadecylamine as chemical modifier for tuned hydrophobicity of surface modified cellulose: toward organophilic cellulose nanocrystals

Cellulose ◽  
2021 ◽  
Author(s):  
Mohammed Majdoub ◽  
Younes Essamlali ◽  
Othmane Amadine ◽  
Ikram Ganetri ◽  
Anass Hafnaoui ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Chemical Modifier ◽  
Surface Modified ◽  
Modified Cellulose
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