Ultralight hybrid silica aerogels derived from supramolecular hydrogels self-assembled from insoluble nano building blocks

Liu, Zongjian; Liu, Ling; Zhong, Zhenggen; Ran, Yuanyuan; Xi, Jianing; Wang, Jin

doi:10.1039/d1ra00418b

Cited by 5 publications

(3 citation statements)

References 65 publications

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“…Polymer-based material and biomaterial (e.g., cellulose) aerogels [6,7] are another hot topic, constituting 17.8% of the total literature studies [8]. Among the polymer-based aerogels, the pure polymer aerogels have gained intensive interest in recent years, due to their exceptional flexible properties and attractive applications in the field of energy, sensors, and high-tech biomedical applications [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Hybrid and Single-Component Flexible Aerogels for Biomedical Applications: A Review

Fijalkowski,

Ali,

Qamer

et al. 2023

Gels

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The inherent disadvantages of traditional non-flexible aerogels, such as high fragility and moisture sensitivity, severely restrict their applications. To address these issues and make the aerogels efficient, especially for advanced medical applications, different techniques have been used to incorporate flexibility in aerogel materials. In recent years, a great boom in flexible aerogels has been observed, which has enabled them to be used in high-tech biomedical applications. The current study comprises a comprehensive review of the preparation techniques of pure polymeric-based hybrid and single-component aerogels and their use in biomedical applications. The biomedical applications of these hybrid aerogels will also be reviewed and discussed, where the flexible polymeric components in the aerogels provide the main contribution. The combination of highly controlled porosity, large internal surfaces, flexibility, and the ability to conform into 3D interconnected structures support versatile properties, which are required for numerous potential medical applications such as tissue engineering; drug delivery reservoir systems; biomedical implants like heart stents, pacemakers, and artificial heart valves; disease diagnosis; and the development of antibacterial materials. The present review also explores the different mechanical, chemical, and physical properties in numerical values, which are most wanted for the fabrication of different materials used in the biomedical fields.

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Section: Introductionmentioning

confidence: 99%

Hybrid and Single-Component Flexible Aerogels for Biomedical Applications: A Review

Fijalkowski,

Ali,

Qamer

et al. 2023

Gels

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“…In addition, the aerogels powder for external use can accordingly easily fall off from the seam. With the addition of other organic substances, the function of aerogel itself will be limited and its thermal insulation performance will be reduced, and the durability of the coating is synchronously poor [21,22].…”

Section: Introductionmentioning

confidence: 99%

Research on the Thermal Insulation Properties of Three-Dimensional Spacer Jacquard Fabric Treated with Silica Aerogel

Zhou,

2023

Materials

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Three-dimensional (3D) spacer fabric has the characteristics of a light weight and high strength, and its unique three-dimensional structure gives it great potential for development in terms of insulation. For the purpose of further improving the thermal insulation performance of 3D spacer fabric, the fabric was treated with silica aerogel while solving the problem of powdering during use. Firstly, the electronic Jacquard machine was modified for weaving spacer fabrics. The ground warp yarns were controlled by two groups of heald frames with various positions of heald eye, forming a double-shuttle. The longitudinal warp yarns were controlled by the Jacquard healdwine to prepare a spacer Jacquard fabric with a spacing of 5 mm. Secondly, polyurethane foam was applied as a carrier to compound with silica aerogel. The experimental results demonstrate that the strength of the composite fabrics is significantly increased, while the toughness is decreased. With the increase in silica aerogel content, the pore size of foam becomes smaller, and the degree of foam fragmentation increases, showing a trend of increasing thermal insulation performance followed by a decreasing insulation performance. When the aerogel content is 3.3%, the composite fabric has the optimal thermal insulation performance.

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“…These are all landmarks for the synthesis of HTRAs. Recently, the development of aerogels is much more diverse, such as new ceramic aerogels, [25][26][27] graphene aerogels, [28][29][30] MXene aerogels, [31,32] and supramolecular polymeric aerogels, [33][34][35][36] have been reported.…”

Section: Introductionmentioning

confidence: 99%

Design, Synthesis, and Use of High Temperature Resistant Aerogels Exceeding 800 oC

Hu¹,

Liu²,

Zhao³

et al. 2021

ES Mater. Manuf.

Self Cite

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As a type of ultra-light and super thermal insulation solid state porous materials, aerogels have attracted increasing attention for aerospace, transportation, and building insulation applications. However, when aerogels are applied in these fields, resistance to high temperature is a prerequisite for them. The most traditional silica aerogels can resist up to 600 ℃, but their porous structures are destroyed at higher temperatures and no longer possess the excellent thermal insulation capacity and low density. Though a great number of new aerogels have been reported in the past two decades, the number of aerogels that could resist to ultra-high temperature, e.g. >800 ℃, is relative few. Nevertheless, it's exciting to see that more and more aerogels that can resist to temperatures higher than 1000 ℃, and even up to 1500 ℃, have been reported in the past few years. This paper gives an overview of aerogels that could resist to more than 800 ℃, and they defined as high temperature resistant aerogels (HTRAs) in this review. The synthetic strategies, mechanisms, chemical compositions, and specific applications of the HTRAs will be reviewed and discussed. This paper would be a timely review to summarized the most recent progress in the HTRAs, and provide insights into the designing of various HTRAs.

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Ultralight hybrid silica aerogels derived from supramolecular hydrogels self-assembled from insoluble nano building blocks

Abstract: Physical hydrogels self-assembled from GO and SiO2–NH2 nanoparticles are observed, and they could be transferred into corresponding ultralow density aerogels.

Cited by 5 publications

References 65 publications

Hybrid and Single-Component Flexible Aerogels for Biomedical Applications: A Review

Hybrid and Single-Component Flexible Aerogels for Biomedical Applications: A Review

Research on the Thermal Insulation Properties of Three-Dimensional Spacer Jacquard Fabric Treated with Silica Aerogel

Design, Synthesis, and Use of High Temperature Resistant Aerogels Exceeding 800 oC

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