Ice-Templated Materials: Polymers, Ceramics, Metals and Their Composites

Deville, Sylvain

doi:10.1007/978-3-319-50515-2_5

Cited by 3 publications

(3 citation statements)

References 740 publications

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“…X-ray tomography was used to image the crack path in situ and better understand the role of the microstructural features on the crack propagation. Of particular interest was the role of the orientation domains of the lamellar structure of ice-templated samples [36,37]. Because of the high absorption of X-rays by zirconia, we could not image cracks in zirconia composites.…”

Section: X-ray Tomographymentioning

confidence: 99%

Mechanical properties of unidirectional, porous polymer/ceramic composites for biomedical applications

Seuba

Maire

Adrien

et al. 2021

Preprint

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The addition of a ductile phase to a porous ceramic can help overcome the brittleness of ceramics. Yet, most studies so far have focused on the processing and characterization of dense composites. Alternatively, unidirectional pores can improve the strength of porous ceramics. Here we combine the two approaches and show a simple processing strategy to obtain highly porous, unidirectional ceramic/polymer composites. We infiltrated ice-templated porous zirconia scaffolds with a polymer or a polymer solution. After centrifugation and evaporation of the solvent, porous ceramic composites with a porosity greater than 60% were obtained. Our results demonstrate that the addition of a ductile polymer (PCL) can increase both the strength and the toughness of the composites while maintaining a high porosity, whereas a brittle polymer (epoxy) has seemingly no impact on the fracture properties. This approach could provide porous materials that are easier to handle for biomedical applications.

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Section: X-ray Tomographymentioning

confidence: 99%

Mechanical properties of unidirectional, porous polymer/ceramic composites for biomedical applications

Seuba

Maire

Adrien

et al. 2021

Preprint

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“…Freeze-drying methods have gained considerable attention for the synthesis of foams or porous structures for a wide range of materials, due to the ease of process and the possibility to tune the pore size and direction [66]. Several teams reported the use of this technique for the synthesis of bio composites for tissue engineering, such as nano-HA/collagen/PLLA composites [67][68][69].…”

Section: Thermally Induced Phase Separation (Freeze-drying)mentioning

confidence: 99%

A Comprehensive Review on Bio-Nanomaterials for Medical Implants and Feasibility Studies on Fabrication of Such Implants by Additive Manufacturing Technique

Velu

Calais

Jayakumar³

et al. 2019

Materials

101

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Nanomaterials have allowed significant breakthroughs in bio-engineering and medical fields. In the present paper a holistic assessment on diverse biocompatible nanocomposites are studied. Their compatibility with advanced fabrication methods such as additive manufacturing for the design of functional medical implants is also critically reviewed. The significance of nanocomposites and processing techniques is also envisaged comprehensively in regard with the needs and futures of implantable medical device industries.

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“…These powder-based methods have significant shortcomings because the materials produced are limited to isotropic composite structures with limited access to their properties and unavoidable residual porosity. Here, we report on a different approach to create refractory metal-based composites utilizing ice-templating 19,20 in a thermal gradient to assemble an anisotropic refractory metal scaffold which is then infiltrated by a second liquid phase. Ice-templating or freeze-casting is a remarkable process, using the anisotropic growth kinetics of ice during freezing to assemble suspended particles in a lamellar microstructure.…”

Section: Introductionmentioning

confidence: 99%

Ice-Templated W-Cu Composites with High Anisotropy

Röthlisberger

Häberli

Krogh

et al. 2019

Sci Rep

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Controlling anisotropy in self-assembled structures enables engineering of materials with highly directional response. Here, we harness the anisotropic growth of ice walls in a thermal gradient to assemble an anisotropic refractory metal structure, which is then infiltrated with Cu to make a composite. Using experiments and simulations, we demonstrate on the specific example of tungsten-copper composites the effect of anisotropy on the electrical and mechanical properties. The measured strength and resistivity are compared to isotropic tungsten-copper composites fabricated by standard powder metallurgical methods. Our results have the potential to fuel the development of more efficient materials, used in electrical power grids and solar-thermal energy conversion systems. The method presented here can be used with a variety of refractory metals and ceramics, which fosters the opportunity to design and functionalize a vast class of new anisotropic load-bearing hybrid metal composites with highly directional properties.

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Ice-Templated Materials: Polymers, Ceramics, Metals and Their Composites

Cited by 3 publications

References 740 publications

Mechanical properties of unidirectional, porous polymer/ceramic composites for biomedical applications

Mechanical properties of unidirectional, porous polymer/ceramic composites for biomedical applications

A Comprehensive Review on Bio-Nanomaterials for Medical Implants and Feasibility Studies on Fabrication of Such Implants by Additive Manufacturing Technique

Ice-Templated W-Cu Composites with High Anisotropy

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