Robust, lightweight gelatin composite aerogel with outstanding thermal insulation

Li, Hanxin; Fu-xing, Zhao; Peng, Tangping; Jiang, Chongwen; Líu, Hao; He, Yu; He, Deyan

doi:10.1007/s10853-022-07508-x

Cited by 15 publications

(14 citation statements)

References 31 publications

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“…In contrast, Li et al have used layered double hydroxide particles as a reinforcement and glutaraldehyde as a gelatin cross-linking agent. They found a 12-fold increase in the specific modulus of the gelatin, which reached a maximum value of 194 MPa·cm 3 /g . Finally, Wang et al have built a three-dimensional crosslinked polymer aerogel consisting of gelatin, phytic acid, and melamine–formaldehyde, which exhibited high compressive strength (1.98 MPa) and a self-intumescent response when exposed to fire …”

Section: Resultsmentioning

confidence: 99%

“…A similar trend has been reported by Li et al in gelatin/layered double hydroxide-coated particles crosslinked with glutaraldehyde. 10 In the absence of TA, the clay sheets can be clearly seen (see G5C5 in Figure 3b). However, the clay can hardly be seen in the SEM images of the compositions containing TA.…”

Section: Compressive Behaviormentioning

confidence: 99%

“…They found a 12-fold increase in the specific modulus of the gelatin, which reached a maximum value of 194 MPa•cm 3 /g. 10 Finally, Wang et al have built a three-dimensional crosslinked polymer aerogel consisting of gelatin, phytic acid, and melamine− formaldehyde, which exhibited high compressive strength (1.98 MPa) and a self-intumescent response when exposed to fire. 43 The compression testing direction is transverse to the main orientation of the polymer and clay particles, so it yielded relatively low values of the mechanical parameters compared with the radial direction.…”

Section: Compressive Behaviormentioning

confidence: 99%

“…If the process combines clay with a soluble polymer, networks between MMT and polymer chains can be formed, enhancing mechanical and thermal performance. 9 Following this idea, Li et al 10 have introduced layered double hydroxide particles modified with a silane coupling into an aerogel using glutaraldehyde as a crosslinker. Their results indicated an increase in the mechanical properties, as well as in the thermal conductivity, which reached values between 0.034 and 0.037 W/mK, comparable to that of conventional polystyrene foams (0.033−0.064 W/mK).…”

Section: Introductionmentioning

confidence: 99%

“…21 Regarding gelatin-based aerogels, previous works have mainly focused on selective adsorption of contaminants, 22 wound healing, 23 and drug delivery, 24 among others. However, few works have considered gelatin-based aerogels as structural materials suitable for engineering applications, 3,10,11,25 and to the best of our knowledge, the effect of TA as a crosslinker in gelatin/clay aerogels is described herein for the first time. Considering the above, this research aimed to produce mechanically robust bio-aerogels with gelatin as the main natural polymer, montmorillonite as a mechanical reinforcement agent, and tannic acid as a natural cross-linking and flame-retardant agent.…”

Section: Introductionmentioning

confidence: 99%

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Properties of Freeze-Dried Gelatin/Clay Aerogel Composites Crosslinked with Tannic Acid

De la Cruz,

Abt,

León

et al. 2023

ACS Appl. Polym. Mater.

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Polymer-based aerogels are tough, low-density, and thermally insulating materials currently receiving increasing attention. In this work, robust all-natural aerogel composites have been obtained by incorporating nanoscale montmorillonite and tannic acid into a gelatin matrix via freeze-drying. The prepared aerogels exhibited low densities, good compressive properties, and low thermal conductivities. The significant improvement in the thermomechanical properties results from the strong bonding between gelatin and tannic acid. Under fire, the systems exhibited excellent flame retardancy with reduced thermal degradation rate and cone calorimeter burning parameters. A straightforward surface treatment with polydimethylsiloxane gave the aerogels exceptional and durable superhydrophobicity. These multifunctional composite aerogels are considered promising eco-friendly alternatives to synthetic polymer-based foams.

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Section: Resultsmentioning

confidence: 99%

Section: Compressive Behaviormentioning

confidence: 99%

Section: Compressive Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Properties of Freeze-Dried Gelatin/Clay Aerogel Composites Crosslinked with Tannic Acid

De la Cruz,

Abt,

León

et al. 2023

ACS Appl. Polym. Mater.

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3D Printed Room Temperature Phosphorescence Materials Enabled by Edible Natural Konjac Glucomannan

Wu,

Li,

Chen

et al. 2024

Advanced Materials

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Shaping room temperature phosphorescence (RTP) materials into three‐dimensional (3D) bodies is important for stereoscopic optoelectronic displays, but remains challenging due to their poor processability and mechanical properties. Here, konjac glucomannan is employed to anchor arylboronic acids with various π conjugations via a facile B─O covalent reaction to afford printable inks, using which full‐color high‐fidelity 3D RTP objects with high mechanical strength can be obtained via direct ink writing‐based 3D printing and freeze‐drying. The doubly rigid structure supplied by the synergy of hydrogen bonding and B─O covalent bonding can protect the triplet excitons, thus the prepared 3D RTP object shows a striking lifetime of 2.14 s. The printed counterparts are successfully used for 3D anti‐counterfeiting and can be recycled and reprinted nondestructively by dissolving in water. This success expands the scope of printable 3D luminescent materials, providing an eco‐friendly platform for the additive manufacturing of sophisticated 3D RTP architectures.This article is protected by copyright. All rights reserved

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Study on the performance and application of coatings based on chitosan/gelatin/microbeads composite aerogel

Lin,

Sun,

Chen

et al. 2023

Packag Technol Sci

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Plastic reduction regulations have resulted in the gradual replacement of traditional food plastic packaging materials with biodegradable and recyclable paper‐based ones. However, paper is prone to water absorption and moisture damage, and it has poor insulation properties, which can impact food quality and user experience. Recently, biopolymers have gained wide interest as the main substrate for paper coatings, providing various qualities for paper‐based materials to meet food packaging requirements. The coating based on chitosan/gelatin/microbeads composite aerogel prepared in this study not only possesses inherent antimicrobial and preservation properties but also enhances the cardboard's mechanical strength, hydrophobicity, and thermal insulation effect after coating on cardboard. When the coating thickness was 30 μm, the tensile strength of the cardboard was enhanced by 0.65 kN/m, the contact angle increased by 19.3°, and the thermal conductivity coefficient decreased by 0.024 W·m−1·K−1. Therefore, the biopolymer composite coating developed in this study provides an eco‐friendly substitute for plastic coatings on cardboard. In addition to bacteriostatic and preserving freshness, it can also address paper‐based material shortcomings, ensuring food quality and safety with comprehensive packaging protection.

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Robust, lightweight gelatin composite aerogel with outstanding thermal insulation

Cited by 15 publications

References 31 publications

Properties of Freeze-Dried Gelatin/Clay Aerogel Composites Crosslinked with Tannic Acid

Properties of Freeze-Dried Gelatin/Clay Aerogel Composites Crosslinked with Tannic Acid

3D Printed Room Temperature Phosphorescence Materials Enabled by Edible Natural Konjac Glucomannan

Study on the performance and application of coatings based on chitosan/gelatin/microbeads composite aerogel

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