Structural characterization of the crystalline nanocellulose and nanocellulose-reinforced carbon buckypaper

Dovjuu, Otgonbayar; Kim, Sedong; Lee, Ajeong; Baek, Seungyeop; Kim, Junhyo; Noh, Jungpil; Huh, Sun-Chul; Choi, Byeong-Keun; Sung, Youl-Moon; Jeong, Hyomin

doi:10.1016/j.diamond.2020.107821

Cited by 9 publications

(4 citation statements)

References 68 publications

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“…Our group has demonstrated the class of TFNC membranes, containing nanocomposite barrier layer based on TOCNF or oxidized CNT nanofillers, where the permeation fluxes of these membranes exhibited noted improvement when compared with commercial UF membranes . Similar results were also found for filtration of high selectivity (i.e., NF and RO) using nanocomposite barrier layers such as CNF–GO for dye removal, and CNC–CNT for salt rejection . Despite these promising studies, the utilization of nanocomposite barrier layers to enhance the filtration performance is still in its infancy.…”

Section: Research Gaps and Perspectivesmentioning

confidence: 60%

“…The reported ion rejection values of NC-based filtration membranes 563,697,698 are very low for water softening and desalination. This can be explained by considering the following two factors: electrostatic interaction between metal ions and NC, and pore size of the membrane.…”

Section: Structure−property Relationships Of Ncmentioning

confidence: 98%

“…695 Similar results were also found for filtration of high selectivity (i.e., NF and RO) using nanocomposite barrier layers such as CNF−GO for dye removal, 696 and CNC−CNT for salt rejection. 697 Despite these promising studies, the utilization of nanocomposite barrier layers to enhance the filtration performance is still in its infancy. We believe the incorporation of NC as a nanofiller is particularly promising because of its abundant surface functional groups and the many pathways to modify these groups to tailor the selectivity.…”

Section: Structure−property Relationships Of Ncmentioning

confidence: 99%

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Nanocellulose for Sustainable Water Purification

et al. 2022

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Nanocelluloses (NC) are nature-based sustainable biomaterials, which not only possess cellulosic properties but also have the important hallmarks of nanomaterials, such as large surface area, versatile reactive sites or functionalities, and scaffolding stability to host inorganic nanoparticles. This class of nanomaterials offers new opportunities for a broad spectrum of applications for clean water production that were once thought impractical. This Review covers substantial discussions based on evaluative judgments of the recent literature and technical advancements in the fields of coagulation/flocculation, adsorption, photocatalysis, and membrane filtration for water decontamination through proper understanding of fundamental knowledge of NC, such as purity, crystallinity, surface chemistry and charge, suspension rheology, morphology, mechanical properties, and film stability. To supplement these, discussions on low-cost and scalable NC extraction, new characterizations including solution small-angle X-ray scattering evaluation, and structure− property relationships of NC are also reviewed. Identifying knowledge gaps and drawing perspectives could generate guidance to overcome uncertainties associated with the adaptation of NC-enabled water purification technologies. Furthermore, the topics of simultaneous removal of multipollutants disposal and proper handling of post/spent NC are discussed. We believe NC-enabled remediation nanomaterials can be integrated into a broad range of water treatments, greatly improving the cost-effectiveness and sustainability of water purification.

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Section: Research Gaps and Perspectivesmentioning

confidence: 60%

Section: Structure−property Relationships Of Ncmentioning

confidence: 98%

Section: Structure−property Relationships Of Ncmentioning

confidence: 99%

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Nanocellulose for Sustainable Water Purification

et al. 2022

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“…In this study, the thermal absorption performance increased with increasing nanofluid concentration. As discussed in previous studies [43][44][45][46], we can achieve much better results if we improve the dispersibility and stability of nanoparticles. Therefore, further studies on the preparation and application of highly dispersed nanofluids are required to obtain better thermal absorption performance.…”

Section: Effects Of Materials Types and Particle Concentrations Of Na...mentioning

confidence: 80%

Thermal Absorption Performance Evaluation of Water-Based Nanofluids (CNTs, Cu, and Al2O3) for Solar Thermal Harvesting

2021

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For solar thermal harvesting, an experimental study was performed on the thermal absorption performance of water-based carbon nanotubes (CNTs), Cu, and Al2O3 nanofluids using a halogen lamp-based thermal radiation system. The effect of nanoparticle concentrations (0.01 wt.%, 0.1 wt.%, and 1 wt.%) on the nanofluid dispersion, stability, and thermal absorption characteristics was investigated, and a comparative analysis was performed for each type of nanofluid. All types of nanofluids increased the absorbance and electrical conductivity with increasing nanoparticle concentration, which contributed to improving the thermal absorption performance of nanofluids. The results showed that the thermal absorption performance was high in the order of carbon-based nanofluids (CNTs), metal-based nanofluids (Cu), and oxide-based nanofluids (Al2O3). In CNTs nanofluids, the thermal absorption performance expressed the time reduction rate, which was 12.8%, 16.3%, and 16.4% at 0.01 wt.%, 0.1 wt.%, and 1 wt.% test cases, respectively. Therefore, the 0.1 wt.%-CNTs nanofluid is more economical and appropriate. However, in Al2O3 nanofluids, the time reduction rate of the 1 wt.% nanofluid was significantly higher than that of the 0.01 wt.% and 0.1 wt.% nanofluids. In Cu nanofluids, unlike CNTs and Al2O3 nanofluids, the time reduction rate constantly increased as the nanoparticle concentration increased.

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Synthesis of novel acrylate emulsions and examination of their synergistic effects with nanocellulose on paper strengthening

Fei,

Zhou,

Yang

et al. 2024

J of Applied Polymer Sci

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With the development of the “paper instead of plastic” trend, the investigation into high‐density, heavy‐weight paper has emerged as a point of interest in both academic and industrial realms. Regrettably, the paper‐strengthening agents that are commercially available fall short of meeting the strength specifications for such papers. To rectify this shortcoming, a water‐based acrylate paper‐strengthening agent (AA) was developed through radical emulsion polymerization. The most stable acrylate emulsion was obtained by amalgamating the anionic emulsifier allyloxyammonium oxymethyl sulfate nonylphenol ethoxy sulfate (DNS‐86) with the nonionic emulsifier nonylphenol polyoxyethylene ether (OP‐10) at a proportion of 1:0.6, with a dosage of 3%. Substituting the conventional strengthening agent (styrene‐butadiene latex) with the synthesized acrylate emulsion in wet‐end addition markedly improved the paper strength, registering a 54.8% increase to 29.4 MPa. The introduction of carboxylated cellulose nanofibers (C‐CNF) further bolstered the mechanical properties of the paper, achieving a tensile strength of 41.44 MPa and an elongation at a break of 3.55%. These results underscore the efficacy of acrylate as a paper‐strengthening agent and the crucial role of C‐CNF in enhancing the structural integrity of paper materials.

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Structural characterization of the crystalline nanocellulose and nanocellulose-reinforced carbon buckypaper

Cited by 9 publications

References 68 publications

Nanocellulose for Sustainable Water Purification

Nanocellulose for Sustainable Water Purification

Thermal Absorption Performance Evaluation of Water-Based Nanofluids (CNTs, Cu, and Al2O3) for Solar Thermal Harvesting

Synthesis of novel acrylate emulsions and examination of their synergistic effects with nanocellulose on paper strengthening

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