Properties and characterization of electrically conductive nanocellulose-based composite films

Liu, D.Y.; Sui, Guoxin; Bhattacharyya, Debes

doi:10.1016/b978-0-08-100079-3.00001-6

Cited by 7 publications

(4 citation statements)

References 59 publications

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“…The DMP FTIR spectra are presented in Figure 6a. The bands at 2922 and 2852 cm −1 were assigned to the C-H stretching vibration [21,22]. Moreover, weak characteristic peaks of DMP at 3026 and 2802 cm −1 were detected on the KCl surface under the precondition that NH4Cl reacted with KCl, suggesting that small amounts of DMP adsorbed onto the KCl surface.…”

Section: Ftir Spectroscopy Analysismentioning

confidence: 98%

Utilization of Ammonium Chloride as a Novel Selective Depressant in Reverse Flotation of Potassium Chloride

Wang

Tian

et al. 2019

Minerals

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The separation of sylvite (KCl) and halite (NaCl), two main minerals in potash ores, is difficult because of the high ion concentration, fine particles of NaCl, and aggregation of KCl and NaCl in the saturated system. This study employed ammonium chloride (NH4Cl) as a new depressant and dodecyl morpholine as a collector in the reverse flotation process. The depressing mechanisms were studied by adsorption capacity experiments, infrared spectral analysis, and molecular dynamics simulations. The flotation tests showed that NaCl recovery increased to 97% after the addition of NH4Cl, while KCl recovery was reduced to <1%. Notably, NH4Cl not only acted as a selective KCl depressant, but also activated NaCl flotation. The FTIR measurements showed that NH4Cl was physically adsorbed onto the KCl and NaCl surfaces. Adsorption capacity experiments and molecular dynamics simulations confirmed more favorable NH4Cl adsorption on the KCl surface than on the NaCl surface. Moreover, the KCl mineral surface was more hydrophilic, while that of NaCl was more hydrophobic. Relative concentration analysis revealed that >90% ammonium and chloride ions were distributed 2–10 Å away from the KCl surface but were dispersed on the NaCl surface, indicating that NH4Cl exhibited stronger intermolecular interactions with KCl than with NaCl.

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Section: Ftir Spectroscopy Analysismentioning

confidence: 98%

Utilization of Ammonium Chloride as a Novel Selective Depressant in Reverse Flotation of Potassium Chloride

Wang

Tian

et al. 2019

Minerals

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“…The polymer-based approach integrates the fundamental properties of biosensing applications. Conducting polymers, such as polyaniline (PANI) [97,165] and polypyrrole (PPy) [114], have frequently been used to prepare BNC-based materials. The conjunction of the conducting characteristics of the conjugated polymers with the porous structure of nanocellulose material results in excellent sensing characteristics and elevates the BNC's capacity to immobilize biomolecules.…”

Section: Application Of the Functionalized Bnc In Biosensors And Futu...mentioning

confidence: 99%

Review of Bacterial Nanocellulose-Based Electrochemical Biosensors: Functionalization, Challenges, and Future Perspectives

et al. 2023

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Electrochemical biosensing devices are known for their simple operational procedures, low fabrication cost, and suitable real-time detection. Despite these advantages, they have shown some limitations in the immobilization of biochemicals. The development of alternative materials to overcome these drawbacks has attracted significant attention. Nanocellulose-based materials have revealed valuable features due to their capacity for the immobilization of biomolecules, structural flexibility, and biocompatibility. Bacterial nanocellulose (BNC) has gained a promising role as an alternative to antifouling surfaces. To widen its applicability as a biosensing device, BNC may form part of the supports for the immobilization of specific materials. The possibilities of modification methods and in situ and ex situ functionalization enable new BNC properties. With the new insights into nanoscale studies, we expect that many biosensors currently based on plastic, glass, or paper platforms will rely on renewable platforms, especially BNC ones. Moreover, substrates based on BNC seem to have paved the way for the development of sensing platforms with minimally invasive approaches, such as wearable devices, due to their mechanical flexibility and biocompatibility.

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“…The TEMPO oxidation could introduce carboxylate along the surface of the whiskers and result in a negative-charged surface [32]. Therefore, a certain transparency and stability of palm nanocellulose suspension can be maintained through the anionic stabilization via attraction/repulsion between layers [33][34][35]. Comparatively, strongly hydrogen bonds are easily formed and agglomeration occurs after sulfuric acid hydrolysis.…”

Section: Optical Transmittance Of Nanowhisker Suspensionmentioning

confidence: 99%

Comparative Study and Characterization of Cellulose Nanowhiskers Extraction from Palm Fibers by Different Methods

Fan

Zhang

et al. 2023

Preprint

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Cellulose nanowhiskers as one kind of renewable and biocompatible nanomaterials evoke much interest because of its versatility in various applications. Herein, palm based cellulose nanowhiskers were prepared by TEMPO oxidation and acid combined enzymatic hydrolysis combined with homogenization, respectively. With the increase of sodium hydroxide concentration, the crystal form of the prepared palm fibers will gradually change from cellulose I to cellulose II. The crystallinity of the nanocellulose prepared by the two TEMPO oxidation systems has little change, which were 63.87% and 60.65%, respectively. While the acid combined enzymatic hydrolysis method increased the crystallinity of palm nanocellulose to 66.59%. The nanocelluloses prepared by the two TEMPO oxidation methods had no obvious difference in shape and size, were all needle-like structures with a diameter of about 10–50 nm. The suspensions were transparent with the optical transmittance of about 90%. While the nanocellulose prepared by the acid combined enzymatic hydrolysis is rod-shaped with a diameter of 30 nm, and the optical transmittance is about 81%. The versatile palm cellulose nanowhiskers would be particularly useful for applications in the nanocomposites as reinforcing phase, as well as in tissue engineering, filtration, pharmaceutical and optical industries as additives.

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Properties and characterization of electrically conductive nanocellulose-based composite films

Cited by 7 publications

References 59 publications

Utilization of Ammonium Chloride as a Novel Selective Depressant in Reverse Flotation of Potassium Chloride

Utilization of Ammonium Chloride as a Novel Selective Depressant in Reverse Flotation of Potassium Chloride

Review of Bacterial Nanocellulose-Based Electrochemical Biosensors: Functionalization, Challenges, and Future Perspectives

Comparative Study and Characterization of Cellulose Nanowhiskers Extraction from Palm Fibers by Different Methods

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