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In this paper, porous nanofibrillated cellulose (NFC) films were utilized to produce water-resistant, porous cellulose films. Film porosities of ~ 50% were achieved through solvent exchange from water to acetone, and the resulting films were hydrophobized with an epoxy modifier in non-swelling conditions in acetone, yielding films that were non-wettable by water but permeable to water vapor. The mass...
Nanofibrillated cellulose (NFC) is an ideal building block in novel bio-based nanomaterials fabrication for various emerging applications. In this study, a biomass-based optoelectronic material of cadmium sulfide (CdS) quantum dots (QDs)-decorated TEMPO oxidized NFC was prepared by an in situ electrostatic adsorption method. The NFC/CdS QDs suspensions were then vacuum-filtrated to produce NFC/CdS...
This study aims to evaluate the suitability of using nanopaper as an insulating material since it has outstanding mechanical and thermal properties. Nanopaper consisting of nanofibrillated cellulose was prepared. Properties of ordinary insulating paper were taken as a reference. DC volume resistivity results show that nanopaper can obtain a relatively high value of 2.55 × 1012 Ω m, which will be more...
Nanocomposite hydrogels with conductive and magnetic properties can be used in a variety of new applications. However, the preparation of stable nanocomposite of conductive polymer and magnetic nanoparticles remains a significant challenge because of the aggregation of polymer and nanoparticles induced by the interparticle dipolar forces and electrostatic interactions. This research reported a strategy...
In order to improve optical properties of materials made of nanocellulose and also minimalize costs, small amounts of mineral fillers such as different forms of calcium carbonate are added. In this work nanocellulose was obtained from apple pomace. The precipitated calcium carbonate (PCC) in amount of 3.74 ± 1.36% of a sample dry matter was deposited on cellulose fibers during isolation process. Isolated...
To expand the application of nanofibrillated cellulose (NFC), the increase of its hydrophobicity is considered to be critical. In the present work, hydrophobic NFC powder was prepared through chemical modification with alkyl ketene dimer (AKD). The results showed that when modifying the original NFC with an AKD loading of 0.7 g/g (based on dry cellulose) at 110 °C for 6 h, the AKD graft yield of approximately...
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