Crosslinking polydopamine/cellulose nanofibril composite aerogels by metal coordination bonds for significantly improved thermal stability, flame resistance, and thermal insulation properties

Han, Fuyi; Huang, Hong; Wang, Yan; Liu, Lifang

doi:10.1007/s10570-021-04233-7

Cited by 23 publications

(8 citation statements)

References 48 publications

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“…Comparing (C) with (A) and (B), it is evident that the low contrast areas are the carbon TEM-grid background. This alignment of polymer particles along CNFs has been observed with polydopamine in the literature . Thus, CNFs can be an excellent dispersion substrate for similarly structured eumelanin.…”

Section: Resultssupporting

confidence: 80%

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Melanin and Polypyrrole-Coated Nanocellulose Hydrogel Networks for Environmental Sensing and Energy Storage

Al-Shamery,

Benselfelt,

Lee

2023

ACS Appl. Mater. Interfaces

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Melanins are black-brown pigments of a specific class of poly indolequinones found in nature and in the human body. They are responsible for photoprotection, radical scavenging, and metal ion chelation. Recently, there has been significant interest in eumelanin as a functional material due to its macromolecular structure and the exploitation of the quinone-hydroquinone redox equilibrium. While eumelanin can be used in many promising applications, it is insoluble in most solvents, limiting its processing into homogeneous materials and coatings. A promising approach is to use a carrier system to stabilize eumelanin by incorporating cellulose nanofibrils (CNFs), a nanoscopic material that originates from plant biomass. In this work, a flexible network consisting of CNFs coupled with vapor-phase polymerized conductive polypyrrole (PPy) is utilized to form a functional eumelanin hydrogel composite (MelaGel) for environmental sensing and battery applications. Flexible sensors for detecting pH or metal ions made from MelaGel can detect both pH values in a range from 4 to 10 and metal ions like zinc(II), copper(II), and iron(III), paving the way for environmental and biomedical sensor applications. The reduced internal resistance in the MelaGel leads to improved charge storage ability compared to synthetic eumelanin composite electrodes. Other noteworthy advantages of the MelaGel are the amphiphilic nature of PPy and the additionally offered redox centers. Lastly, this material was tested in aqueous electrolyte zinc coin cells, where it was shown to have charge/discharge stability for over 1200 cycles, showcasing this MelaGel composite as a promising eumelanin-based composite hybrid sensor/energy storage material.

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Section: Resultssupporting

confidence: 80%

“…This alignment of polymer particles along CNFs has been observed with polydopamine in the literature. 42 Thus, CNFs can be an excellent dispersion substrate for similarly structured eumelanin.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Melanin and Polypyrrole-Coated Nanocellulose Hydrogel Networks for Environmental Sensing and Energy Storage

Al-Shamery,

Benselfelt,

Lee

2023

ACS Appl. Mater. Interfaces

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“…It has also been demonstrated that the PDA formed by the self-polymerization of dopamine on the surface of Fe 3 O 4 is thermally stable. For example, as a thermal stability modifier, PDA has been used to improve the perceived stability modification of carbon nanotubes and composite membranes. − In addition, previous research on the thermal stability of Ag nanoparticles indicated that high temperatures would not affect the SERS-enhanced effect of Ag nanoparticles …”

Section: Resultsmentioning

confidence: 99%

Magnetic Molecularly Imprinted Nanoparticles for Rapid and Selective Detection of Dimethyl Phthalate in Water Using SERS

Zhang

Guan

Wang

et al. 2023

ACS Sustainable Chem. Eng.

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The plastics industry commonly uses dimethyl phthalate (DMP) as a plasticizer. DMP is highly permeable to nature at different pH levels and temperatures, resulting in the contamination of water, soil, and air. As a result of the high cost, low selectivity, and complicated pretreatment in the DMP detection process, this paper synthesized ferromagnetic nanomaterials with molecular imprinting, simplified the pretreatment process by ferromagnetic nanomaterials, selectively adsorbed DMP using the molecular imprinting method, and finally detected DMP with the material by SERS. Molecular imprinting polymers (MIPs) have a higher affinity for DMP than NIPs, which are characterized by fast adsorption rates, strong binding ability, and improved selective adsorption ability. Furthermore, the MIPs are reusable, exhibiting only about a 7% loss in adsorption capacity after seven adsorption−desorption experiments. As a consequence of the adsorption of DMP onto Fe 3 O 4 @MIPs@Ag, DMP detection was achieved through SERS characterization, and it was found that the DMP concentration was linearly related to the intensity of the corresponding characteristic peak associated with the DMP, with a detection limit of 4.2 × 10 −11 M. According to the tested water samples, the recovery rating ranged from 92.6 to 105%, demonstrating the feasibility of the proposed method for the detection of DMP in real water samples.

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“…To sum up, cellulose-derived aerogels are considered to be the most valuable biomass-based aerogels (originating from a cellulose resource) owing to the widely easy modulation and the moderate reactive activity from a chemical-structure perspective. However, to date, the mechanical strength of cellulose-derived aerogels is always challenging, necessitating further research to increase their performance [ 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Cellulose Diacetate Aerogels with Low Drying Shrinkage, High-Efficient Thermal Insulation, and Superior Mechanical Strength

Zhang,

Lu,

et al. 2024

Gels

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The inherent characteristics of cellulose-derived aerogels, such as their natural abundance and environmental friendliness, make them highly interesting. However, its significant shrinkage before and after the supercritical drying procedure and low mechanical strength limit its potential application. Here, we propose a strategy to prepare cellulose diacetate aerogels (CDAAs) with low drying shrinkage, exceptional thermal insulation, and superior mechanical strength. The low drying shrinkage (radial drying shrinkage of 1.4%) of CDAAs is attributed to their relative strong networking skeletons, which are greatly formed by tert-butanol solvent exchange in exerting the interaction of reducing the surface tension force. In this case, CDAAs are eventually endowed with the low bulk density of 0.069 g cm−3 as well. Additionally, as-prepared CDAAs possess an abundant three-dimensional networking structure whose pore size is concentrated in the diameter range of ~50 nm, and the result above is beneficial for improving the thermal insulation performance (thermal conductivity of 0.021 W m−1 K−1 at ambient environmental and pressure conditions). On the other hand, the optimal compressive stresses of CDAAs at 3% and 5% strain are 0.22 and 0.27 MPa respectively, indicating a mechanically well robustness. The above evidence demonstrates indeed the exceptional thermal insulation and superior compressive properties of CDAAs. This work may provide a new solution for developing a kind of high-performance cellulose-derived aerogel in the future.

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Crosslinking polydopamine/cellulose nanofibril composite aerogels by metal coordination bonds for significantly improved thermal stability, flame resistance, and thermal insulation properties

Cited by 23 publications

References 48 publications

Melanin and Polypyrrole-Coated Nanocellulose Hydrogel Networks for Environmental Sensing and Energy Storage

Melanin and Polypyrrole-Coated Nanocellulose Hydrogel Networks for Environmental Sensing and Energy Storage

Magnetic Molecularly Imprinted Nanoparticles for Rapid and Selective Detection of Dimethyl Phthalate in Water Using SERS

Cellulose Diacetate Aerogels with Low Drying Shrinkage, High-Efficient Thermal Insulation, and Superior Mechanical Strength

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