Plant cell wall inspired xyloglucan/cellulose nanocrystals aerogels produced by freeze-casting

Jaafar, Zahraa; Quelennec, B.; Moreau, Céline; Lourdin, Denis; Maigret, Jean-Eudes; Pontoire, Bruno; D’Orlando, Angélina; Coradin, Thibaud; Duchemin, B.; Fernandes, Francisco M.; Cathala, Bernard

doi:10.1016/j.carbpol.2020.116642

Cited by 42 publications

(23 citation statements)

References 57 publications

(83 reference statements)

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“…When XG was added to the initial CNF dispersion, the resulting aerogel pore morphology clearly changed (Figure 2). In this case, a cellular morphology for both UD and ND freezing was observed as already described for CNF/XG and CNC/XG systems by Sehaqui et al [28] and Jaafar et al [16], respectively. This difference in morphology could be attributed to CNF-XG assembly formed before the freezing step, hindering the ice crystal growth in the vertically direction.…”

Section: Morphology Of Aerogelssupporting

confidence: 77%

“…UD CNF aerogels display A lamellar structure was observed in the cross-section for all CNF aerogels from UD and ND freezing processes (Figure 2a',e',h',k'). This lamellar structure was already observed for CNF-and CNC-based aerogels [16,17,30,[43][44][45]. UD CNF aerogels displayed well-oriented lamellar structure in the freezing direction (Figure 2a,e) (as indicated by the red arrow in Figure 2e) with pores between CNF walls observed in the cross-section (Figure 2a',e').…”

Section: Morphology Of Aerogelssupporting

confidence: 73%

“…When XG was added to CNF dispersion at 95:5 and 60:40, all CNF/XG dispersions displayed a gel-like behavior indicating that, as CNF content decreased, XG reinforced the hydrogel network. This gelation phenomenon was due to the coverage of CNF surfaces by XG and the physical cross-linking between CNFs as already observed for CNC-XG systems [16,18].…”

Section: Rheological Properties Of Cnf and Cnf/xg Mixturessupporting

confidence: 67%

“…A lamellar structure was observed in the cross-section for all CNF aerogels from U and ND freezing processes (Figure 2a',e',h',k'). This lamellar structure was already o served for CNF-and CNC-based aerogels [16,17,30,[43][44][45]. UD CNF aerogels display A lamellar structure was observed in the cross-section for all CNF aerogels from UD and ND freezing processes (Figure 2a',e',h',k').…”

Section: Morphology Of Aerogelsmentioning

confidence: 61%

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Cellulose Nanofibrils/Xyloglucan Bio-Based Aerogels with Shape Recovery

Mandin

Moreau

Talantikite

et al. 2021

Gels

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Bio-based aerogels containing cellulose nanofibrils (CNFs) are promising materials due to the inherent physical properties of CNF. The high affinity of cellulose to plant hemicelluloses (xyloglucan, xylan, pectin) is also an opportunity to develop biomaterials with new properties. Here, we prepared aerogels from gelled dispersions of CNFs and xyloglucan (XG) at different ratios by using a freeze-casting procedure in unidirectional (UD) and non-directional (ND) manners. As showed by rheology analysis, CNF and CNF/XG dispersions behave as true gels. We investigated the impact of the freezing procedure and the gel’s composition on the microstructure and the water absorption properties. The introduction of XG greatly affects the microstructure of the aerogel from lamellar to cellular morphology. Bio-based aerogels showed high water absorption capacity with shape recovery after compression. The relation between morphology and aerogel compositions is discussed.

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Section: Morphology Of Aerogelssupporting

confidence: 77%

Section: Morphology Of Aerogelssupporting

confidence: 73%

Section: Rheological Properties Of Cnf and Cnf/xg Mixturessupporting

confidence: 67%

Section: Morphology Of Aerogelsmentioning

confidence: 61%

See 2 more Smart Citations

Cellulose Nanofibrils/Xyloglucan Bio-Based Aerogels with Shape Recovery

Mandin

Moreau

Talantikite

et al. 2021

Gels

Self Cite

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“…A somewhat similar approach was taken in ref. [178,179]: xyloglucan or xylan was reinforced by CNC and dried using unidirectional and isotropic freeze-drying. A higher concentration of cellulose resulted in higher compressive modulus and higher shape stability when immersed in water [177].…”

Section: Hemicelluloses Aerogelsmentioning

confidence: 99%

Biorefinery Approach for Aerogels

et al. 2020

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According to the International Energy Agency, biorefinery is “the sustainable processing of biomass into a spectrum of marketable bio-based products (chemicals, materials) and bioenergy (fuels, power, heat)”. In this review, we survey how the biorefinery approach can be applied to highly porous and nanostructured materials, namely aerogels. Historically, aerogels were first developed using inorganic matter. Subsequently, synthetic polymers were also employed. At the beginning of the 21st century, new aerogels were created based on biomass. Which sources of biomass can be used to make aerogels and how? This review answers these questions, paying special attention to bio-aerogels’ environmental and biomedical applications. The article is a result of fruitful exchanges in the frame of the European project COST Action “CA 18125 AERoGELS: Advanced Engineering and Research of aeroGels for Environment and Life Sciences”.

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Anisotropic Nature of Lightweight Wooden Metamaterials with Mechanical/Thermomechanical Multistability

Yang

Dang

Wang

et al. 2023

Adv Funct Materials

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Nanoengineered wood provides a renewable structural material with 3D micro and nanoarchitectures, exhibiting many beneficial characteristics such as being lightweight in nature, mechanically strong, eco‐friendly, thermally insulation, and low carbon footprint. Most nanocellulose aerogels lack sufficient mechanical strength, while nanowood involves a trade‐off between mechanical strength and insulation performance. Here, a nanowood‐derived product with mechanical/thermomechanical multistability called a wooden metamaterial, which is ultrastiff yet lightweight, is designed and synthesized. The self‐healing behaviors of cellulose nanofibrils originally present in the cell walls and their combination with microscale mechanical constraints are utilized to form directional porous frameworks (porosity ≥98%) and encapsulated empty fiber lumen in predesigned macroscopic architectures. The wooden metamaterials are lightweight, showing ultrahigh specific strength (207.7 MPa cm3 g−1), and ultrahigh anisotropy with an approximate factor of 4. Wooden metamaterials have overcome the mechanical/thermomechanical deficiencies of existing building materials and advanced aerospace thermal insulators, and have great potential for revolutionizing architecture and manufacturing industries, particularly as a lightweight, eco‐friendly, scalable, energy‐efficient, and cost‐effective.

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Plant cell wall inspired xyloglucan/cellulose nanocrystals aerogels produced by freeze-casting

Cited by 42 publications

References 57 publications

Cellulose Nanofibrils/Xyloglucan Bio-Based Aerogels with Shape Recovery

Cellulose Nanofibrils/Xyloglucan Bio-Based Aerogels with Shape Recovery

Biorefinery Approach for Aerogels

Anisotropic Nature of Lightweight Wooden Metamaterials with Mechanical/Thermomechanical Multistability

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