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In this work, the grass material of Eulaliopsis binata (EB) was used for the production of dissolving pulp with the concept of integrated biorefinery. Sequential treatments were conducted via dilute acid-assisted pre-hydrolysis with the hemicellulose removal rate of 89.5%, ammonium sulfite (AS) treatment and KOH treatment with the delignification rate of 91.7%, as well as bleaching for the further...
Cellulose-based film has a poor water vapor barrier property, which limits its applications in food packaging. The hydrophobic modification of cellulose materials has attracted increasing interests. In this work, UV curable polyfluoro resin was incorporated into the cellulose matrix for superhydrophobic modification of the cellulose matrix. Results showed that the loaded polyfluoro resin had an obvious...
Phosphorus- and nitrogen-containing compounds were grafted on a cotton fabric surface by three steps. Firstly, the cotton fabric was oxidized by sodium periodate to form aldehyde groups, and then the aldehyde groups were reacted with the organic amine to generate Schiff bases. Finally, the Schiff bases were reacted with dimethyl phosphate by the phosphine hydride addition reaction. The chemical structure...
A facile approach for the preparation of cellulose gel dispersions with particle size less than 5 μm has been developed. The particles were obtained by dissolving cellulose in NaOH/urea solvent, followed by regeneration in ethanol/H2O mixed solution with homogenizer shearing. The characteristics of the cellulose gel dispersions were evaluated in terms of particle dimensions and crystalline structure,...
Cellulose nanocrystals (CNCs) can be used as building blocks for the production of many renewable and sustainable nanomaterials. In this work, CNCs were produced from bleached eucalyptus kraft pulp with a high yield over 75 % via FeCl3-catalyzed formic acid (FA) hydrolysis process. It was found that the particle size of resultant CNC products (F-CNC) decreased with the increase of FeCl3 dosage in...
Naringenin (Nar) is an important bioactive flavonoid with poor organic solubility and oral bioavailability. It is highly promising for treatment of conditions including diabetes, hyperlipidemia, and hepatitis C infection. Amorphous solid dispersion (ASD) of Nar is an appealing way to enhance its solubility, and carboxylated cellulose esters are attractive polymers for this purpose because of their...
Resveratrol is a highly biologically active phytoalexin, found in many plant materials that are common elements of the human diet, such as grapes, nuts, and red wine. The therapeutic or disease preventative potential of this natural polyphenolic antioxidant has been limited in part due to its poor aqueous solubility and low oral bioavailability. We hypothesized that solid dispersion of resveratrol...
The regioselective esterification of cellulose by reaction with bulky acyl halides including pivaloyl chloride, adamantoyl chloride and 2,4,6-trimethylbenzoyl chloride was studied. Functionalization conditions to achieve a given degree of substitution (DS) and the resulting ester substitution pattern were described in detail. One- and two-dimensional NMR spectroscopy techniques were used to confirm...
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