Recent Progress on Nanocellulose Aerogels: Preparation, Modification, Composite Fabrication, Applications

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(11)

Published: Feb. 3, 2021

The rapid development of modern industry and excessive consumption petroleum-based polymers have triggered a double crisis presenting shortage nonrenewable resources environmental pollution. However, this has provided an opportunity to stimulate researchers harness native biobased materials for novel advanced applications. Nanocellulose-based aerogels, using abundant sustainable cellulose as raw material, present third-generation aerogels that combine traditional with high porosity large specific surface area, well the excellent properties itself. Currently, nanocellulose provide highly attention-catching platform wide range functional applications in various fields, e.g., adsorption, separation, energy storage, thermal insulation, electromagnetic interference shielding, biomedical Here, preparation methods, modification strategies, composite fabrications, further are summarized, additional discussions regarding prospects potential challenges future development.

Language: Английский

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Cellulose Aerogels: Synthesis, Applications, and Prospects

Polymers, Journal Year: 2018, Volume and Issue: 10(6), P. 623 - 623

Published: June 6, 2018

Due to its excellent performance, aerogel is considered be an especially promising new material. Cellulose a renewable and biodegradable natural polymer. Aerogel prepared using cellulose has the renewability, biocompatibility, biodegradability of cellulose, while also having other advantages, such as low density, high porosity, large specific surface area. Thus, it can applied for many purposes in areas adsorption oil/water separation, thermal insulation, biomedical applications, well fields. There are three types aerogels: aerogels (nanocellulose bacterial aerogels), regenerated aerogels, made from derivatives. In this paper, more than 200 articles were reviewed summarize properties these technologies used their preparation, sol⁻gel process gel drying. addition, applications different introduced.

Language: Английский

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Nanofibrous Kevlar Aerogel Threads for Thermal Insulation in Harsh Environments

ACS Nano, Journal Year: 2019, Volume and Issue: 13(5), P. 5703 - 5711

Published: May 1, 2019

Aerogel with low density, high porosity, and large surface area is a promising structure for the next generation of high-performance thermal insulation fibers textiles. However, aerogel suffer from weak mechanical properties or complex fabricating processes. Herein, facile wet-spinning approach nanofibrous Kevlar (KNF) threads ( i.e., fibers) under extreme environments demonstrated. The made render specific (240 m2/g) wide-temperature stability. flexible strong KNF are woven into textiles to illustrate excellent property temperature (-196 +300 °C) at room temperature. COMSOL simulation applied calculate conductivity single fiber find an effective way improve fiber. Furthermore, series functionalized based on fibers, such as phase-change conductive hydrophobic textiles, have been prepared. Such represent direction fibrous thermal-insulation materials.

Language: Английский

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Design principles of food gels

Nature Food, Journal Year: 2020, Volume and Issue: 1(2), P. 106 - 118

Published: Feb. 18, 2020

Language: Английский

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Adsorption of iodine in metal–organic framework materials

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(8), P. 3243 - 3262

Published: Jan. 1, 2022

The chemistry and applications of metal–organic framework materials for iodine polyiodide capture storage are reviewed.

Language: Английский

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Ultralight, Flexible, and Biomimetic Nanocellulose/Silver Nanowire Aerogels for Electromagnetic Interference Shielding

ACS Nano, Journal Year: 2020, Volume and Issue: 14(3), P. 2927 - 2938

Published: Feb. 28, 2020

Ultralight and highly flexible biopolymer aerogels, composed of biomimetic cellular microstructures formed from cellulose nanofibers silver nanowires, are assembled via a convenient facile freeze-casting method. The lamellar, honeycomb-like, random porous scaffolds successfully achieved by adjusting freezing approaches to modulate the relationships between macroscopic mechanical electromagnetic interference (EMI) shielding performances. Combining transformation arising in situ compression controlled content building units, optimized lamellar aerogels can show very high EMI effectiveness (SE), which exceeds 70 or 40 dB X-band while density is merely 6.2 1.7 mg/cm3, respectively. corresponding normalized surface specific SE (defined as divided material thickness) up 178235 dB·cm2/g, far surpassing that so-far reported materials. Antibacterial properties hydrophobicity also demonstrated extending versatility application potential hybrid aerogels.

Language: Английский

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Thermally Insulating Nanocellulose‐Based Materials

Advanced Materials, Journal Year: 2020, Volume and Issue: 33(28)

Published: Aug. 6, 2020

Thermally insulating materials based on renewable nanomaterials such as nanocellulose could reduce the energy consumption and environmental impact of building sector. Recent reports superinsulating cellulose nanomaterial (CNM)-based aerogels foams with significantly better heat transport properties than commercially dominating materials, expanded polystyrene, polyurethane foams, glass wool, have resulted in a rapidly increasing research activity. Herein, fundamental basis thermal conductivity porous is described, anisotropic transfer CNMs films aligned processing structure novel CNM-based low conductivities are presented discussed. The extraordinarily architectures multicomponent approaches highlighted related to contributions Knudsen effect phonon scattering.

Language: Английский

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Prospect of Polysaccharide-Based Materials as Advanced Food Packaging

Molecules, Journal Year: 2019, Volume and Issue: 25(1), P. 135 - 135

Published: Dec. 29, 2019

The use of polysaccharide-based materials presents an eco-friendly technological solution, by reducing dependence on fossil resources while a product’s carbon footprint, when compared to conventional plastic packaging materials. This review discusses the potential polysaccharides as raw material produce multifunctional for food applications. covered areas include recent innovations and properties Emphasis is given hemicelluloses, marine polysaccharides, bacterial exopolysaccharides their application in latest trends materials, including edible coatings, intelligent films, thermo-insulated aerogel packaging.

Language: Английский

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Optimization strategies of composite phase change materials for thermal energy storage, transfer, conversion and utilization

Energy & Environmental Science, Journal Year: 2020, Volume and Issue: 13(12), P. 4498 - 4535

Published: Jan. 1, 2020

Thermal energy harvesting technologies based on composite phase change materials (PCMs) are capable of tremendous amounts thermal via isothermal transitions, thus showing enormous potential in the design state-of-the-art renewable infrastructure.

Language: Английский

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Synthesis of chitosan aerogels as promising carriers for drug delivery: A review

Carbohydrate Polymers, Journal Year: 2019, Volume and Issue: 231, P. 115744 - 115744

Published: Dec. 16, 2019

Language: Английский

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