Composite aerogel materials based on lignosulfonates and silica: Synthesis, structure, properties

Бровко, О. С.; Паламарчук, И. А.; Богданович, Н. И.; Ивахнов, А. Д.; Чухчин, Д. Г.; Belousova, Marina E.; Arkhilin, Mikhail; Gorshkova, Natalia

doi:10.1016/j.matchemphys.2021.124768

Cited by 9 publications

(3 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, epoxy resin [ 27 ] and triisocyanate [ 28 ] can be used as reinforcing agents to coat the junction between aerogel nanoparticles to enhance the strength of the aerogel gel skeleton. The other is to develop composite aerogel products [ 29 ]. Fibrous cellulose [ 30 ], fiberglass [ 22 ], and aramid [ 25 ] were used to reinforce the silica gel skeleton to produce composite aerogel products with high mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Silica-Bacterial Cellulose Composite Aerogel Fibers with Excellent Mechanical Properties from Sodium Silicate Precursor

Song

Miao

Sai

et al. 2021

Gels

View full text Add to dashboard Cite

Forming fibers for fabric insulation is difficult using aerogels, which have excellent thermal insulation performance but poor mechanical properties. A previous study proposed a novel method that could effectively improve the mechanical properties of aerogels and make them into fibers for use in fabric insulation. In this study, composite aerogel fibers (CAFs) with excellent mechanical properties and thermal insulation performance were prepared using a streamlined method. The wet bacterial cellulose (BC) matrix without freeze-drying directly was immersed in an inorganic precursor (silicate) solution, followed by initiating in situ sol-gel reaction under the action of acidic catalyst after secondary shaping. Finally, after surface modification and ambient drying of the wet composite gel, CAFs were obtained. The CAFs prepared by the simplified method still had favorable mechanical properties (tensile strength of 4.5 MPa) and excellent thermal insulation properties under extreme conditions (220 °C and −60 °C). In particular, compared with previous work, the presented CAFs preparation process is simpler and more environmentally friendly. In addition, the experimental costs were reduced. Furthermore, the obtained CAFs had high specific surface area (671.3 m²/g), excellent hydrophobicity, and low density (≤0.154 g/cm3). This streamlined method was proposed to prepare aerogel fibers with excellent performance to meet the requirements of wearable applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Silica-Bacterial Cellulose Composite Aerogel Fibers with Excellent Mechanical Properties from Sodium Silicate Precursor

Song

Miao

Sai

et al. 2021

Gels

View full text Add to dashboard Cite

show abstract

“…32−34 Importantly, lignin macromolecules contains abundant phenolic hydroxyl groups, 29 which can provide coordination sites for silicic acid and catalyze its polycondensation process. 35,36 Therefore, it is expected to develop a combined strategy of self-assembly and cogelation to fabricate high-performance three-dimensional (3D) lignin/silica nanocomposite aerogel, which could be an important contribution for broadening structure and function choices of biobased thermal insulation aerogels. Although the few hints of lignin/silica hybrid materials can be found in previous reports, 37,38 they are all in powder form with uncontrollable morphology and weak mechanical properties, resulting in the failure to meet the stringent requirements of integrated energy-efficient engineering.…”

mentioning

confidence: 99%

“…However, lignin has to date been underexploited in high-value commercial applications due to its structural complexity and heterogeneity . In recent years, the ongoing paradigm shift toward lignin-based advanced materials is largely based on the strong hydrophobic self-assembly behavior of lignin macromolecules, which can be easily converted into superior micro/nano-structures or domains. − Importantly, lignin macromolecules contains abundant phenolic hydroxyl groups, which can provide coordination sites for silicic acid and catalyze its polycondensation process. , Therefore, it is expected to develop a combined strategy of self-assembly and cogelation to fabricate high-performance three-dimensional (3D) lignin/silica nanocomposite aerogel, which could be an important contribution for broadening structure and function choices of biobased thermal insulation aerogels. Although the few hints of lignin/silica hybrid materials can be found in previous reports, , they are all in powder form with uncontrollable morphology and weak mechanical properties, resulting in the failure to meet the stringent requirements of integrated energy-efficient engineering.…”

mentioning

confidence: 99%

Water-Induced Self-Assembly and In Situ Mineralization within Plant Phenolic Glycol-Gel toward Ultrastrong and Multifunctional Thermal Insulating Aerogels

Fan

Hao

et al. 2022

ACS Nano

View full text Add to dashboard Cite

Biopolymer/silica nanocomposite aerogels are highly attractive as thermally insulating materials for prevailing energy-saving engineering but are usually plagued by their lack of mechanical strength and environmental stability. Lignin is an appealing plant phenolic biopolymer due to its natural abundance, high stiffness, water repellency, and thermostability. However, integrating lignin and silica into high-performance 3D hybrid aerogels remains a substantial challenge due to the unstable co-sol process. In diatoms, the silicic acid stabilization prior to the condensation reaction is enhanced by the intervention of biomolecules in noncovalent interactions. Inspired by this mechanism, we herein rationally design an ultrastrong silica-mineralized lignin nanocomposite aerogel (LigSi) with an adjustable multilevel micro/nanostructure and arbitrary machinability through an unusual water-induced self-assembly and in situ mineralization based on ethylene glycol-stabilized lignin/siloxane colloid. The optimized LigSi exhibits an ultrahigh stiffness (a specific modulus of ∼376.3 kN m kg −1 ) and can support over 5000 times its own weight without obvious deformation. Moreover, the aerogel demonstrates a combination of outstanding properties, including superior and humiditytolerant thermal insulation (maintained at ∼0.04 W m −1 K −1 under a relative humidity of 33−94%), excellent fire resistance withstanding an ∼1200 °C flame without disintegration, low near-infrared absorption (∼9%), and intrinsic self-cleaning/ superhydrophobic performance (158°WCA). These advanced properties make it an ideal thermally insulating material for diversified applications in harsh environments. As a proof of concept, a dual-mode LigSi thermal device was designed to demonstrate the application prospect of combining passive heat-trapping and active heating in the building.

show abstract

Effect of heat treatment on the electrical conductivity of carbon–nitrogen onion nanomaterial based on the interpolyelectrolyte complex lignosulfonate–chitosan

et al. 2023

View full text Add to dashboard Cite

Composite aerogel materials based on lignosulfonates and silica: Synthesis, structure, properties

Cited by 9 publications

References 46 publications

Silica-Bacterial Cellulose Composite Aerogel Fibers with Excellent Mechanical Properties from Sodium Silicate Precursor

Silica-Bacterial Cellulose Composite Aerogel Fibers with Excellent Mechanical Properties from Sodium Silicate Precursor

Water-Induced Self-Assembly and In Situ Mineralization within Plant Phenolic Glycol-Gel toward Ultrastrong and Multifunctional Thermal Insulating Aerogels

Effect of heat treatment on the electrical conductivity of carbon–nitrogen onion nanomaterial based on the interpolyelectrolyte complex lignosulfonate–chitosan

Contact Info

Product

Resources

About