Direct Cryo Writing of Aerogels via 3D Printing of Aligned Cellulose Nanocrystals Inspired by the Plant Cell Wall

Kam, Doron; Chasnitsky, Michael; Nowogrodski, Chen; Braslavsky, Ido; Abitbol, Tíffany; Magdassi, Shlomo; Shoseyov, Oded

doi:10.3390/colloids3020046

Cited by 44 publications

(52 citation statements)

References 77 publications

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“…Further to FEF and 3D‐CoEx techniques, in recent years, unidirectional freeze casting and extrusion or inkjet‐based additive manufacturing (Figure 14B) have been combined, allowing simultaneous printing and freezing, to produce porous ceramic, [ 37d ] metallic, [ 37b ] biomacromolecule, [ 109 ] and graphene structures [ 37a ] with interconnected pores across multiple length scales after being directly post‐processed via lyophilization.…”

Section: Freeze Casting Materials In New Geometriesmentioning

confidence: 99%

Freeze Casting: From Low‐Dimensional Building Blocks to Aligned Porous Structures—A Review of Novel Materials, Methods, and Applications

2020

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Freeze casting, also known as ice templating, is a particularly versatile technique that has been applied extensively for the fabrication of well‐controlled biomimetic porous materials based on ceramics, metals, polymers, biomacromolecules, and carbon nanomaterials, endowing them with novel properties and broadening their applicability. The principles of different directional freeze‐casting processes are described and the relationships between processing and structure are examined. Recent progress in freeze‐casting assisted assembly of low dimensional building blocks, including graphene and carbon nanotubes, into tailored micro‐ and macrostructures is then summarized. Emerging trends relating to novel materials as building blocks and novel freeze‐cast geometries—beads, fibers, films, complex macrostructures, and nacre‐mimetic composites—are presented. Thereafter, the means by which aligned porous structures and nacre mimetic materials obtainable through recently developed freeze‐casting techniques and low‐dimensional building blocks can facilitate material functionality across multiple fields of application, including energy storage and conversion, environmental remediation, thermal management, and smart materials, are discussed.

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Section: Freeze Casting Materials In New Geometriesmentioning

confidence: 99%

Freeze Casting: From Low‐Dimensional Building Blocks to Aligned Porous Structures—A Review of Novel Materials, Methods, and Applications

2020

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“…Furthermore, the direct 3D printing of aerogel has enhanced the possibility of controlled aerogel pore sizes and their 3D internal structural network. A few research works have been carried out on the fabrication of nanowire aerogels from novel materials [ 43 , 44 , 45 ]. The advent of this novel technique is expected to eliminate complex preparation methods such as gelatinisation, organic solvent replacement, retrogradation and supercritical CO 2 drying in the future [ 46 ].…”

Section: Chronological Studiesmentioning

confidence: 99%

A Review on Plant Cellulose Nanofibre-Based Aerogels for Biomedical Applications

et al. 2020

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Cellulose nanomaterials from plant fibre provide various potential applications (i.e., biomedical, automotive, packaging, etc.). The biomedical application of nanocellulose isolated from plant fibre, which is a carbohydrate-based source, is very viable in the 21st century. The essential characteristics of plant fibre-based nanocellulose, which include its molecular, tensile and mechanical properties, as well as its biodegradability potential, have been widely explored for functional materials in the preparation of aerogel. Plant cellulose nano fibre (CNF)-based aerogels are novel functional materials that have attracted remarkable interest. In recent years, CNF aerogel has been extensively used in the biomedical field due to its biocompatibility, renewability and biodegradability. The effective surface area of CNFs influences broad applications in biological and medical studies such as sustainable antibiotic delivery for wound healing, the preparation of scaffolds for tissue cultures, the development of drug delivery systems, biosensing and an antimicrobial film for wound healing. Many researchers have a growing interest in using CNF-based aerogels in the mentioned applications. The application of cellulose-based materials is widely reported in the literature. However, only a few studies discuss the potential of cellulose nanofibre aerogel in detail. The potential applications of CNF aerogel include composites, organic–inorganic hybrids, gels, foams, aerogels/xerogels, coatings and nano-paper, bioactive and wound dressing materials and bioconversion. The potential applications of CNF have rarely been a subject of extensive review. Thus, extensive studies to develop materials with cheaper and better properties, high prospects and effectiveness for many applications are the focus of the present work. The present review focuses on the evolution of aerogels via characterisation studies on the isolation of CNF-based aerogels. The study concludes with a description of the potential and challenges of developing sustainable materials for biomedical applications.

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“…Various computer-aided methods have been fabricated to design the desired shape of 3D aerogels using biopolymers as bio-injected ink. Stereolithography [ 21 ], selective laser sintering [ 22 ], fused deposition modelling [ 23 ], and 3D printing [ 24 , 25 ] are examples of the most used fabrication techniques of biopolymer-based aerogels. Chitosan, cellulose and alginate have been used in various medical applications due to their unique biological characteristics such as hemostatic properties, antibacterial and mucoadhesive properties which are useful for wound healing and stopping hemorrhaging.…”

Section: Biopolymer-based Aerogelsmentioning

confidence: 99%

A Review on Revolutionary Natural Biopolymer-Based Aerogels for Antibacterial Delivery

et al. 2020

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A biopolymer-based aerogel has been developed to become one of the most potentially utilized materials in different biomedical applications. The biopolymer-based aerogel has unique physical, chemical, and mechanical properties and these properties are used in tissue engineering, biosensing, diagnostic, medical implant and drug delivery applications. Biocompatible and non-toxic biopolymers such as chitosan, cellulose and alginates have been used to deliver antibiotics, plants extract, essential oils and metallic nanoparticles. Antibacterial aerogels have been used in superficial and chronic wound healing as dressing sheets. This review critically analyses the utilization of biopolymer-based aerogels in antibacterial delivery. The analysis shows the relationship between their properties and their applications in the wound healing process. Furthermore, highlights of the potentials, challenges and proposition of the application of biopolymer-based aerogels is explored.

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Direct Cryo Writing of Aerogels via 3D Printing of Aligned Cellulose Nanocrystals Inspired by the Plant Cell Wall

Cited by 44 publications

References 77 publications

Freeze Casting: From Low‐Dimensional Building Blocks to Aligned Porous Structures—A Review of Novel Materials, Methods, and Applications

Freeze Casting: From Low‐Dimensional Building Blocks to Aligned Porous Structures—A Review of Novel Materials, Methods, and Applications

A Review on Plant Cellulose Nanofibre-Based Aerogels for Biomedical Applications

A Review on Revolutionary Natural Biopolymer-Based Aerogels for Antibacterial Delivery

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